octave-nkf: liboctave/dSparse.cc annotate

annotate liboctave/dSparse.cc @ 11518:141b3fb5cef7

style fixes

author	John W. Eaton <jwe@octave.org>
date	Thu, 13 Jan 2011 16:52:30 -0500
parents	7c573eb981eb
children	fd0a3ac60b0e

rev	line source
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	1 /*
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	2
8920 eb63fbe60fab update copyright notices John W. Eaton <jwe@octave.org> parents: 8910 diff changeset	3 Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009 David Bateman
7016 93c65f2a5668 [project @ 2007-10-12 06:40:56 by jwe] jwe parents: 6989 diff changeset	4 Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003, 2004 Andy Adler
10521 4d1fc073fbb7 add some missing copyright stmts Jaroslav Hajek <highegg@gmail.com> parents: 10431 diff changeset	5 Copyright (C) 2010 VZLU Prague
7016 93c65f2a5668 [project @ 2007-10-12 06:40:56 by jwe] jwe parents: 6989 diff changeset	6
93c65f2a5668 [project @ 2007-10-12 06:40:56 by jwe] jwe parents: 6989 diff changeset	7 This file is part of Octave.
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	8
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	9 Octave is free software; you can redistribute it and/or modify it
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	10 under the terms of the GNU General Public License as published by the
7016 93c65f2a5668 [project @ 2007-10-12 06:40:56 by jwe] jwe parents: 6989 diff changeset	11 Free Software Foundation; either version 3 of the License, or (at your
93c65f2a5668 [project @ 2007-10-12 06:40:56 by jwe] jwe parents: 6989 diff changeset	12 option) any later version.
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	13
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	14 Octave is distributed in the hope that it will be useful, but WITHOUT
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	15 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	16 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	17 for more details.
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	18
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	19 You should have received a copy of the GNU General Public License
7016 93c65f2a5668 [project @ 2007-10-12 06:40:56 by jwe] jwe parents: 6989 diff changeset	20 along with Octave; see the file COPYING. If not, see
93c65f2a5668 [project @ 2007-10-12 06:40:56 by jwe] jwe parents: 6989 diff changeset	21 <http://www.gnu.org/licenses/>.
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	22
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	23 */
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	24
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	25 #ifdef HAVE_CONFIG_H
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	26 #include <config.h>
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	27 #endif
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	28
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	29 #include <cfloat>
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	30
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	31 #include <iostream>
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	32 #include <vector>
8964 f4f4d65faaa0 Implement sparse * diagonal and diagonal * sparse operations, double-prec only. Jason Riedy <jason@acm.org> parents: 8951 diff changeset	33 #include <functional>
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	34
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	35 #include "quit.h"
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	36 #include "lo-ieee.h"
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	37 #include "lo-mappers.h"
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	38 #include "f77-fcn.h"
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	39 #include "dRowVector.h"
8377 25bc2d31e1bf improve OCTAVE_LOCAL_BUFFER Jaroslav Hajek <highegg@gmail.com> parents: 8366 diff changeset	40 #include "oct-locbuf.h"
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	41
8964 f4f4d65faaa0 Implement sparse * diagonal and diagonal * sparse operations, double-prec only. Jason Riedy <jason@acm.org> parents: 8951 diff changeset	42 #include "dDiagMatrix.h"
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	43 #include "CSparse.h"
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	44 #include "boolSparse.h"
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	45 #include "dSparse.h"
7602 7bfaa9611558 Rewrite sparse mappers in terms of a functor template function David Bateman <dbateman@free.fr> parents: 7520 diff changeset	46 #include "functor.h"
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	47 #include "oct-spparms.h"
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	48 #include "SparsedbleLU.h"
5785 6b9cec830d72 [project @ 2006-05-03 19:32:46 by dbateman] dbateman parents: 5775 diff changeset	49 #include "MatrixType.h"
5451 ed08548b9054 [project @ 2005-09-15 19:52:50 by jwe] jwe parents: 5429 diff changeset	50 #include "oct-sparse.h"
5506 b4cfbb0ec8c4 [project @ 2005-10-23 19:09:32 by dbateman] dbateman parents: 5451 diff changeset	51 #include "sparse-util.h"
b4cfbb0ec8c4 [project @ 2005-10-23 19:09:32 by dbateman] dbateman parents: 5451 diff changeset	52 #include "SparsedbleCHOL.h"
5610 9761b7d24e9e [project @ 2006-02-09 09:12:02 by dbateman] dbateman parents: 5604 diff changeset	53 #include "SparseQR.h"
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	54
8964 f4f4d65faaa0 Implement sparse * diagonal and diagonal * sparse operations, double-prec only. Jason Riedy <jason@acm.org> parents: 8951 diff changeset	55 #include "Sparse-diag-op-defs.h"
f4f4d65faaa0 Implement sparse * diagonal and diagonal * sparse operations, double-prec only. Jason Riedy <jason@acm.org> parents: 8951 diff changeset	56
8968 91d53dc37f79 Add perm * sparse, perm \ sparse, sparse * perm, and sparse / perm operations. Jason Riedy <jason@acm.org> parents: 8967 diff changeset	57 #include "Sparse-perm-op-defs.h"
91d53dc37f79 Add perm * sparse, perm \ sparse, sparse * perm, and sparse / perm operations. Jason Riedy <jason@acm.org> parents: 8967 diff changeset	58
5681 233d98d95659 [project @ 2006-03-16 17:48:55 by dbateman] dbateman parents: 5630 diff changeset	59 // Define whether to use a basic QR solver or one that uses a Dulmange
233d98d95659 [project @ 2006-03-16 17:48:55 by dbateman] dbateman parents: 5630 diff changeset	60 // Mendelsohn factorization to seperate the problem into under-determined,
233d98d95659 [project @ 2006-03-16 17:48:55 by dbateman] dbateman parents: 5630 diff changeset	61 // well-determined and over-determined parts and solves them seperately
233d98d95659 [project @ 2006-03-16 17:48:55 by dbateman] dbateman parents: 5630 diff changeset	62 #ifndef USE_QRSOLVE
233d98d95659 [project @ 2006-03-16 17:48:55 by dbateman] dbateman parents: 5630 diff changeset	63 #include "sparse-dmsolve.cc"
233d98d95659 [project @ 2006-03-16 17:48:55 by dbateman] dbateman parents: 5630 diff changeset	64 #endif
233d98d95659 [project @ 2006-03-16 17:48:55 by dbateman] dbateman parents: 5630 diff changeset	65
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	66 // Fortran functions we call.
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	67 extern "C"
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	68 {
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	69 F77_RET_T
6242 64bad7c6a607 [project @ 2007-01-16 07:03:51 by jwe] jwe parents: 6207 diff changeset	70 F77_FUNC (dgbtrf, DGBTRF) (const octave_idx_type&, const octave_idx_type&,
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	71 const octave_idx_type&, const octave_idx_type&,
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	72 double*, const octave_idx_type&,
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	73 octave_idx_type*, octave_idx_type&);
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	74
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	75 F77_RET_T
11518 141b3fb5cef7 style fixes John W. Eaton <jwe@octave.org> parents: 11130 diff changeset	76 F77_FUNC (dgbtrs, DGBTRS) (F77_CONST_CHAR_ARG_DECL,
141b3fb5cef7 style fixes John W. Eaton <jwe@octave.org> parents: 11130 diff changeset	77 const octave_idx_type&, const octave_idx_type&,
141b3fb5cef7 style fixes John W. Eaton <jwe@octave.org> parents: 11130 diff changeset	78 const octave_idx_type&, const octave_idx_type&,
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	79 const double*, const octave_idx_type&,
11518 141b3fb5cef7 style fixes John W. Eaton <jwe@octave.org> parents: 11130 diff changeset	80 const octave_idx_type, double,
141b3fb5cef7 style fixes John W. Eaton <jwe@octave.org> parents: 11130 diff changeset	81 const octave_idx_type&, octave_idx_type&
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	82 F77_CHAR_ARG_LEN_DECL);
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	83
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	84 F77_RET_T
11518 141b3fb5cef7 style fixes John W. Eaton <jwe@octave.org> parents: 11130 diff changeset	85 F77_FUNC (dgbcon, DGBCON) (F77_CONST_CHAR_ARG_DECL,
141b3fb5cef7 style fixes John W. Eaton <jwe@octave.org> parents: 11130 diff changeset	86 const octave_idx_type&, const octave_idx_type&,
141b3fb5cef7 style fixes John W. Eaton <jwe@octave.org> parents: 11130 diff changeset	87 const octave_idx_type&, double*,
141b3fb5cef7 style fixes John W. Eaton <jwe@octave.org> parents: 11130 diff changeset	88 const octave_idx_type&, const octave_idx_type*,
141b3fb5cef7 style fixes John W. Eaton <jwe@octave.org> parents: 11130 diff changeset	89 const double&, double&, double*,
141b3fb5cef7 style fixes John W. Eaton <jwe@octave.org> parents: 11130 diff changeset	90 octave_idx_type*, octave_idx_type&
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	91 F77_CHAR_ARG_LEN_DECL);
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	92
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	93 F77_RET_T
11518 141b3fb5cef7 style fixes John W. Eaton <jwe@octave.org> parents: 11130 diff changeset	94 F77_FUNC (dpbtrf, DPBTRF) (F77_CONST_CHAR_ARG_DECL,
141b3fb5cef7 style fixes John W. Eaton <jwe@octave.org> parents: 11130 diff changeset	95 const octave_idx_type&, const octave_idx_type&,
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	96 double*, const octave_idx_type&, octave_idx_type&
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	97 F77_CHAR_ARG_LEN_DECL);
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	98
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	99 F77_RET_T
11518 141b3fb5cef7 style fixes John W. Eaton <jwe@octave.org> parents: 11130 diff changeset	100 F77_FUNC (dpbtrs, DPBTRS) (F77_CONST_CHAR_ARG_DECL,
141b3fb5cef7 style fixes John W. Eaton <jwe@octave.org> parents: 11130 diff changeset	101 const octave_idx_type&, const octave_idx_type&,
141b3fb5cef7 style fixes John W. Eaton <jwe@octave.org> parents: 11130 diff changeset	102 const octave_idx_type&, double*,
141b3fb5cef7 style fixes John W. Eaton <jwe@octave.org> parents: 11130 diff changeset	103 const octave_idx_type&, double*,
141b3fb5cef7 style fixes John W. Eaton <jwe@octave.org> parents: 11130 diff changeset	104 const octave_idx_type&, octave_idx_type&
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	105 F77_CHAR_ARG_LEN_DECL);
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	106
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	107 F77_RET_T
11518 141b3fb5cef7 style fixes John W. Eaton <jwe@octave.org> parents: 11130 diff changeset	108 F77_FUNC (dpbcon, DPBCON) (F77_CONST_CHAR_ARG_DECL,
141b3fb5cef7 style fixes John W. Eaton <jwe@octave.org> parents: 11130 diff changeset	109 const octave_idx_type&, const octave_idx_type&,
141b3fb5cef7 style fixes John W. Eaton <jwe@octave.org> parents: 11130 diff changeset	110 double*, const octave_idx_type&,
141b3fb5cef7 style fixes John W. Eaton <jwe@octave.org> parents: 11130 diff changeset	111 const double&, double&, double*,
141b3fb5cef7 style fixes John W. Eaton <jwe@octave.org> parents: 11130 diff changeset	112 octave_idx_type*, octave_idx_type&
141b3fb5cef7 style fixes John W. Eaton <jwe@octave.org> parents: 11130 diff changeset	113 F77_CHAR_ARG_LEN_DECL);
141b3fb5cef7 style fixes John W. Eaton <jwe@octave.org> parents: 11130 diff changeset	114 F77_RET_T
141b3fb5cef7 style fixes John W. Eaton <jwe@octave.org> parents: 11130 diff changeset	115 F77_FUNC (dptsv, DPTSV) (const octave_idx_type&, const octave_idx_type&,
141b3fb5cef7 style fixes John W. Eaton <jwe@octave.org> parents: 11130 diff changeset	116 double, double, double*, const octave_idx_type&,
141b3fb5cef7 style fixes John W. Eaton <jwe@octave.org> parents: 11130 diff changeset	117 octave_idx_type&);
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	118
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	119 F77_RET_T
11518 141b3fb5cef7 style fixes John W. Eaton <jwe@octave.org> parents: 11130 diff changeset	120 F77_FUNC (dgtsv, DGTSV) (const octave_idx_type&, const octave_idx_type&,
141b3fb5cef7 style fixes John W. Eaton <jwe@octave.org> parents: 11130 diff changeset	121 double, double, double, double,
141b3fb5cef7 style fixes John W. Eaton <jwe@octave.org> parents: 11130 diff changeset	122 const octave_idx_type&, octave_idx_type&);
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	123
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	124 F77_RET_T
11518 141b3fb5cef7 style fixes John W. Eaton <jwe@octave.org> parents: 11130 diff changeset	125 F77_FUNC (dgttrf, DGTTRF) (const octave_idx_type&, double, double,
141b3fb5cef7 style fixes John W. Eaton <jwe@octave.org> parents: 11130 diff changeset	126 double, double, octave_idx_type*,
141b3fb5cef7 style fixes John W. Eaton <jwe@octave.org> parents: 11130 diff changeset	127 octave_idx_type&);
141b3fb5cef7 style fixes John W. Eaton <jwe@octave.org> parents: 11130 diff changeset	128
141b3fb5cef7 style fixes John W. Eaton <jwe@octave.org> parents: 11130 diff changeset	129 F77_RET_T
141b3fb5cef7 style fixes John W. Eaton <jwe@octave.org> parents: 11130 diff changeset	130 F77_FUNC (dgttrs, DGTTRS) (F77_CONST_CHAR_ARG_DECL,
141b3fb5cef7 style fixes John W. Eaton <jwe@octave.org> parents: 11130 diff changeset	131 const octave_idx_type&, const octave_idx_type&,
141b3fb5cef7 style fixes John W. Eaton <jwe@octave.org> parents: 11130 diff changeset	132 const double, const double, const double*,
141b3fb5cef7 style fixes John W. Eaton <jwe@octave.org> parents: 11130 diff changeset	133 const double, const octave_idx_type,
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	134 double *, const octave_idx_type&, octave_idx_type&
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	135 F77_CHAR_ARG_LEN_DECL);
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	136
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	137 F77_RET_T
11518 141b3fb5cef7 style fixes John W. Eaton <jwe@octave.org> parents: 11130 diff changeset	138 F77_FUNC (zptsv, ZPTSV) (const octave_idx_type&, const octave_idx_type&,
141b3fb5cef7 style fixes John W. Eaton <jwe@octave.org> parents: 11130 diff changeset	139 double, Complex, Complex*, const octave_idx_type&,
141b3fb5cef7 style fixes John W. Eaton <jwe@octave.org> parents: 11130 diff changeset	140 octave_idx_type&);
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	141
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	142 F77_RET_T
11518 141b3fb5cef7 style fixes John W. Eaton <jwe@octave.org> parents: 11130 diff changeset	143 F77_FUNC (zgtsv, ZGTSV) (const octave_idx_type&, const octave_idx_type&,
141b3fb5cef7 style fixes John W. Eaton <jwe@octave.org> parents: 11130 diff changeset	144 Complex, Complex, Complex, Complex,
141b3fb5cef7 style fixes John W. Eaton <jwe@octave.org> parents: 11130 diff changeset	145 const octave_idx_type&, octave_idx_type&);
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	146
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	147 }
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	148
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	149 SparseMatrix::SparseMatrix (const SparseBoolMatrix &a)
5681 233d98d95659 [project @ 2006-03-16 17:48:55 by dbateman] dbateman parents: 5630 diff changeset	150 : MSparse<double> (a.rows (), a.cols (), a.nnz ())
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	151 {
5275 23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe] jwe parents: 5261 diff changeset	152 octave_idx_type nc = cols ();
5681 233d98d95659 [project @ 2006-03-16 17:48:55 by dbateman] dbateman parents: 5630 diff changeset	153 octave_idx_type nz = a.nnz ();
5275 23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe] jwe parents: 5261 diff changeset	154
23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe] jwe parents: 5261 diff changeset	155 for (octave_idx_type i = 0; i < nc + 1; i++)
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	156 cidx (i) = a.cidx (i);
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	157
5275 23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe] jwe parents: 5261 diff changeset	158 for (octave_idx_type i = 0; i < nz; i++)
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	159 {
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	160 data (i) = a.data (i);
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	161 ridx (i) = a.ridx (i);
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	162 }
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	163 }
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	164
8366 8b1a2555c4e2 implement diagonal matrix objects Jaroslav Hajek <highegg@gmail.com> parents: 8335 diff changeset	165 SparseMatrix::SparseMatrix (const DiagMatrix& a)
8910 6e9f26506804 optimize diag -> sparse and perm -> sparse conversions Jaroslav Hajek <highegg@gmail.com> parents: 8377 diff changeset	166 : MSparse<double> (a.rows (), a.cols (), a.length ())
6e9f26506804 optimize diag -> sparse and perm -> sparse conversions Jaroslav Hajek <highegg@gmail.com> parents: 8377 diff changeset	167 {
6e9f26506804 optimize diag -> sparse and perm -> sparse conversions Jaroslav Hajek <highegg@gmail.com> parents: 8377 diff changeset	168 octave_idx_type j = 0, l = a.length ();
6e9f26506804 optimize diag -> sparse and perm -> sparse conversions Jaroslav Hajek <highegg@gmail.com> parents: 8377 diff changeset	169 for (octave_idx_type i = 0; i < l; i++)
8366 8b1a2555c4e2 implement diagonal matrix objects Jaroslav Hajek <highegg@gmail.com> parents: 8335 diff changeset	170 {
8910 6e9f26506804 optimize diag -> sparse and perm -> sparse conversions Jaroslav Hajek <highegg@gmail.com> parents: 8377 diff changeset	171 cidx (i) = j;
8366 8b1a2555c4e2 implement diagonal matrix objects Jaroslav Hajek <highegg@gmail.com> parents: 8335 diff changeset	172 if (a(i, i) != 0.0)
8b1a2555c4e2 implement diagonal matrix objects Jaroslav Hajek <highegg@gmail.com> parents: 8335 diff changeset	173 {
8b1a2555c4e2 implement diagonal matrix objects Jaroslav Hajek <highegg@gmail.com> parents: 8335 diff changeset	174 data (j) = a(i, i);
8b1a2555c4e2 implement diagonal matrix objects Jaroslav Hajek <highegg@gmail.com> parents: 8335 diff changeset	175 ridx (j) = i;
8b1a2555c4e2 implement diagonal matrix objects Jaroslav Hajek <highegg@gmail.com> parents: 8335 diff changeset	176 j++;
8b1a2555c4e2 implement diagonal matrix objects Jaroslav Hajek <highegg@gmail.com> parents: 8335 diff changeset	177 }
8b1a2555c4e2 implement diagonal matrix objects Jaroslav Hajek <highegg@gmail.com> parents: 8335 diff changeset	178 }
8910 6e9f26506804 optimize diag -> sparse and perm -> sparse conversions Jaroslav Hajek <highegg@gmail.com> parents: 8377 diff changeset	179 for (octave_idx_type i = l; i <= a.cols (); i++)
6e9f26506804 optimize diag -> sparse and perm -> sparse conversions Jaroslav Hajek <highegg@gmail.com> parents: 8377 diff changeset	180 cidx(i) = j;
6e9f26506804 optimize diag -> sparse and perm -> sparse conversions Jaroslav Hajek <highegg@gmail.com> parents: 8377 diff changeset	181 }
6e9f26506804 optimize diag -> sparse and perm -> sparse conversions Jaroslav Hajek <highegg@gmail.com> parents: 8377 diff changeset	182
6e9f26506804 optimize diag -> sparse and perm -> sparse conversions Jaroslav Hajek <highegg@gmail.com> parents: 8377 diff changeset	183 SparseMatrix::SparseMatrix (const PermMatrix& a)
6e9f26506804 optimize diag -> sparse and perm -> sparse conversions Jaroslav Hajek <highegg@gmail.com> parents: 8377 diff changeset	184 : MSparse<double> (a.rows (), a.cols (), a.rows ())
6e9f26506804 optimize diag -> sparse and perm -> sparse conversions Jaroslav Hajek <highegg@gmail.com> parents: 8377 diff changeset	185 {
6e9f26506804 optimize diag -> sparse and perm -> sparse conversions Jaroslav Hajek <highegg@gmail.com> parents: 8377 diff changeset	186 octave_idx_type n = a.rows ();
6e9f26506804 optimize diag -> sparse and perm -> sparse conversions Jaroslav Hajek <highegg@gmail.com> parents: 8377 diff changeset	187 for (octave_idx_type i = 0; i <= n; i++)
6e9f26506804 optimize diag -> sparse and perm -> sparse conversions Jaroslav Hajek <highegg@gmail.com> parents: 8377 diff changeset	188 cidx (i) = i;
6e9f26506804 optimize diag -> sparse and perm -> sparse conversions Jaroslav Hajek <highegg@gmail.com> parents: 8377 diff changeset	189 const Array<octave_idx_type> pv = a.pvec ();
6e9f26506804 optimize diag -> sparse and perm -> sparse conversions Jaroslav Hajek <highegg@gmail.com> parents: 8377 diff changeset	190
6e9f26506804 optimize diag -> sparse and perm -> sparse conversions Jaroslav Hajek <highegg@gmail.com> parents: 8377 diff changeset	191 if (a.is_row_perm ())
6e9f26506804 optimize diag -> sparse and perm -> sparse conversions Jaroslav Hajek <highegg@gmail.com> parents: 8377 diff changeset	192 {
6e9f26506804 optimize diag -> sparse and perm -> sparse conversions Jaroslav Hajek <highegg@gmail.com> parents: 8377 diff changeset	193 for (octave_idx_type i = 0; i < n; i++)
8951 5bce1357edd6 Fix conversion from PermMatrix to SparseMatrix. Jason Riedy <jason@acm.org> parents: 8920 diff changeset	194 ridx (pv (i)) = i;
8910 6e9f26506804 optimize diag -> sparse and perm -> sparse conversions Jaroslav Hajek <highegg@gmail.com> parents: 8377 diff changeset	195 }
6e9f26506804 optimize diag -> sparse and perm -> sparse conversions Jaroslav Hajek <highegg@gmail.com> parents: 8377 diff changeset	196 else
6e9f26506804 optimize diag -> sparse and perm -> sparse conversions Jaroslav Hajek <highegg@gmail.com> parents: 8377 diff changeset	197 {
6e9f26506804 optimize diag -> sparse and perm -> sparse conversions Jaroslav Hajek <highegg@gmail.com> parents: 8377 diff changeset	198 for (octave_idx_type i = 0; i < n; i++)
8951 5bce1357edd6 Fix conversion from PermMatrix to SparseMatrix. Jason Riedy <jason@acm.org> parents: 8920 diff changeset	199 ridx (i) = pv (i);
8910 6e9f26506804 optimize diag -> sparse and perm -> sparse conversions Jaroslav Hajek <highegg@gmail.com> parents: 8377 diff changeset	200 }
8951 5bce1357edd6 Fix conversion from PermMatrix to SparseMatrix. Jason Riedy <jason@acm.org> parents: 8920 diff changeset	201
5bce1357edd6 Fix conversion from PermMatrix to SparseMatrix. Jason Riedy <jason@acm.org> parents: 8920 diff changeset	202 for (octave_idx_type i = 0; i < n; i++)
5bce1357edd6 Fix conversion from PermMatrix to SparseMatrix. Jason Riedy <jason@acm.org> parents: 8920 diff changeset	203 data (i) = 1.0;
8366 8b1a2555c4e2 implement diagonal matrix objects Jaroslav Hajek <highegg@gmail.com> parents: 8335 diff changeset	204 }
8b1a2555c4e2 implement diagonal matrix objects Jaroslav Hajek <highegg@gmail.com> parents: 8335 diff changeset	205
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	206 bool
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	207 SparseMatrix::operator == (const SparseMatrix& a) const
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	208 {
5275 23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe] jwe parents: 5261 diff changeset	209 octave_idx_type nr = rows ();
23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe] jwe parents: 5261 diff changeset	210 octave_idx_type nc = cols ();
5681 233d98d95659 [project @ 2006-03-16 17:48:55 by dbateman] dbateman parents: 5630 diff changeset	211 octave_idx_type nz = nnz ();
5275 23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe] jwe parents: 5261 diff changeset	212 octave_idx_type nr_a = a.rows ();
23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe] jwe parents: 5261 diff changeset	213 octave_idx_type nc_a = a.cols ();
5681 233d98d95659 [project @ 2006-03-16 17:48:55 by dbateman] dbateman parents: 5630 diff changeset	214 octave_idx_type nz_a = a.nnz ();
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	215
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	216 if (nr != nr_a \|\| nc != nc_a \|\| nz != nz_a)
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	217 return false;
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	218
5275 23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe] jwe parents: 5261 diff changeset	219 for (octave_idx_type i = 0; i < nc + 1; i++)
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	220 if (cidx(i) != a.cidx(i))
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	221 return false;
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	222
5275 23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe] jwe parents: 5261 diff changeset	223 for (octave_idx_type i = 0; i < nz; i++)
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	224 if (data(i) != a.data(i) \|\| ridx(i) != a.ridx(i))
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	225 return false;
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	226
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	227 return true;
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	228 }
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	229
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	230 bool
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	231 SparseMatrix::operator != (const SparseMatrix& a) const
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	232 {
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	233 return !(*this == a);
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	234 }
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	235
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	236 bool
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	237 SparseMatrix::is_symmetric (void) const
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	238 {
6207 3c92b8d892dd [project @ 2006-12-06 20:19:14 by dbateman] dbateman parents: 6185 diff changeset	239 octave_idx_type nr = rows ();
3c92b8d892dd [project @ 2006-12-06 20:19:14 by dbateman] dbateman parents: 6185 diff changeset	240 octave_idx_type nc = cols ();
3c92b8d892dd [project @ 2006-12-06 20:19:14 by dbateman] dbateman parents: 6185 diff changeset	241
3c92b8d892dd [project @ 2006-12-06 20:19:14 by dbateman] dbateman parents: 6185 diff changeset	242 if (nr == nc && nr > 0)
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	243 {
6207 3c92b8d892dd [project @ 2006-12-06 20:19:14 by dbateman] dbateman parents: 6185 diff changeset	244 for (octave_idx_type j = 0; j < nc; j++)
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	245 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	246 for (octave_idx_type i = cidx(j); i < cidx(j+1); i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	247 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	248 octave_idx_type ri = ridx(i);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	249
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	250 if (ri != j)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	251 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	252 bool found = false;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	253
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	254 for (octave_idx_type k = cidx(ri); k < cidx(ri+1); k++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	255 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	256 if (ridx(k) == j)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	257 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	258 if (data(i) == data(k))
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	259 found = true;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	260 break;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	261 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	262 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	263
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	264 if (! found)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	265 return false;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	266 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	267 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	268 }
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	269
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	270 return true;
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	271 }
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	272
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	273 return false;
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	274 }
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	275
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	276 SparseMatrix&
5275 23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe] jwe parents: 5261 diff changeset	277 SparseMatrix::insert (const SparseMatrix& a, octave_idx_type r, octave_idx_type c)
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	278 {
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	279 MSparse<double>::insert (a, r, c);
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	280 return *this;
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	281 }
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	282
6823 9fddcc586065 [project @ 2007-08-24 08:27:27 by dbateman] dbateman parents: 6482 diff changeset	283 SparseMatrix&
9fddcc586065 [project @ 2007-08-24 08:27:27 by dbateman] dbateman parents: 6482 diff changeset	284 SparseMatrix::insert (const SparseMatrix& a, const Array<octave_idx_type>& indx)
9fddcc586065 [project @ 2007-08-24 08:27:27 by dbateman] dbateman parents: 6482 diff changeset	285 {
9fddcc586065 [project @ 2007-08-24 08:27:27 by dbateman] dbateman parents: 6482 diff changeset	286 MSparse<double>::insert (a, indx);
9fddcc586065 [project @ 2007-08-24 08:27:27 by dbateman] dbateman parents: 6482 diff changeset	287 return *this;
9fddcc586065 [project @ 2007-08-24 08:27:27 by dbateman] dbateman parents: 6482 diff changeset	288 }
9fddcc586065 [project @ 2007-08-24 08:27:27 by dbateman] dbateman parents: 6482 diff changeset	289
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	290 SparseMatrix
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	291 SparseMatrix::max (int dim) const
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	292 {
9790 a5035bc7fbfb rewrite dispatch part & slightly improve min,max,cummin,cummax Jaroslav Hajek <highegg@gmail.com> parents: 9469 diff changeset	293 Array<octave_idx_type> dummy_idx;
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	294 return max (dummy_idx, dim);
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	295 }
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	296
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	297 SparseMatrix
9790 a5035bc7fbfb rewrite dispatch part & slightly improve min,max,cummin,cummax Jaroslav Hajek <highegg@gmail.com> parents: 9469 diff changeset	298 SparseMatrix::max (Array<octave_idx_type>& idx_arg, int dim) const
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	299 {
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	300 SparseMatrix result;
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	301 dim_vector dv = dims ();
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	302
9790 a5035bc7fbfb rewrite dispatch part & slightly improve min,max,cummin,cummax Jaroslav Hajek <highegg@gmail.com> parents: 9469 diff changeset	303 if (dv.numel () == 0 \|\| dim >= dv.length ())
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	304 return result;
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	305
9790 a5035bc7fbfb rewrite dispatch part & slightly improve min,max,cummin,cummax Jaroslav Hajek <highegg@gmail.com> parents: 9469 diff changeset	306 if (dim < 0)
a5035bc7fbfb rewrite dispatch part & slightly improve min,max,cummin,cummax Jaroslav Hajek <highegg@gmail.com> parents: 9469 diff changeset	307 dim = dv.first_non_singleton ();
a5035bc7fbfb rewrite dispatch part & slightly improve min,max,cummin,cummax Jaroslav Hajek <highegg@gmail.com> parents: 9469 diff changeset	308
5275 23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe] jwe parents: 5261 diff changeset	309 octave_idx_type nr = dv(0);
23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe] jwe parents: 5261 diff changeset	310 octave_idx_type nc = dv(1);
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	311
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	312 if (dim == 0)
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	313 {
9790 a5035bc7fbfb rewrite dispatch part & slightly improve min,max,cummin,cummax Jaroslav Hajek <highegg@gmail.com> parents: 9469 diff changeset	314 idx_arg.clear (1, nc);
5275 23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe] jwe parents: 5261 diff changeset	315 octave_idx_type nel = 0;
23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe] jwe parents: 5261 diff changeset	316 for (octave_idx_type j = 0; j < nc; j++)
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	317 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	318 double tmp_max = octave_NaN;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	319 octave_idx_type idx_j = 0;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	320 for (octave_idx_type i = cidx(j); i < cidx(j+1); i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	321 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	322 if (ridx(i) != idx_j)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	323 break;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	324 else
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	325 idx_j++;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	326 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	327
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	328 if (idx_j != nr)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	329 tmp_max = 0.;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	330
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	331 for (octave_idx_type i = cidx(j); i < cidx(j+1); i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	332 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	333 double tmp = data (i);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	334
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	335 if (xisnan (tmp))
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	336 continue;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	337 else if (xisnan (tmp_max) \|\| tmp > tmp_max)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	338 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	339 idx_j = ridx (i);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	340 tmp_max = tmp;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	341 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	342
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	343 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	344
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	345 idx_arg.elem (j) = xisnan (tmp_max) ? 0 : idx_j;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	346 if (tmp_max != 0.)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	347 nel++;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	348 }
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	349
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	350 result = SparseMatrix (1, nc, nel);
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	351
5275 23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe] jwe parents: 5261 diff changeset	352 octave_idx_type ii = 0;
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	353 result.xcidx (0) = 0;
5275 23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe] jwe parents: 5261 diff changeset	354 for (octave_idx_type j = 0; j < nc; j++)
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	355 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	356 double tmp = elem (idx_arg(j), j);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	357 if (tmp != 0.)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	358 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	359 result.xdata (ii) = tmp;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	360 result.xridx (ii++) = 0;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	361 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	362 result.xcidx (j+1) = ii;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	363
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	364 }
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	365 }
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	366 else
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	367 {
10350 12884915a8e4 merge MArray classes & improve Array interface Jaroslav Hajek <highegg@gmail.com> parents: 10314 diff changeset	368 idx_arg.resize (nr, 1, 0);
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	369
5275 23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe] jwe parents: 5261 diff changeset	370 for (octave_idx_type i = cidx(0); i < cidx(1); i++)
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	371 idx_arg.elem(ridx(i)) = -1;
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	372
5275 23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe] jwe parents: 5261 diff changeset	373 for (octave_idx_type j = 0; j < nc; j++)
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	374 for (octave_idx_type i = 0; i < nr; i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	375 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	376 if (idx_arg.elem(i) != -1)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	377 continue;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	378 bool found = false;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	379 for (octave_idx_type k = cidx(j); k < cidx(j+1); k++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	380 if (ridx(k) == i)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	381 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	382 found = true;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	383 break;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	384 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	385
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	386 if (!found)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	387 idx_arg.elem(i) = j;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	388
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	389 }
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	390
5275 23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe] jwe parents: 5261 diff changeset	391 for (octave_idx_type j = 0; j < nc; j++)
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	392 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	393 for (octave_idx_type i = cidx(j); i < cidx(j+1); i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	394 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	395 octave_idx_type ir = ridx (i);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	396 octave_idx_type ix = idx_arg.elem (ir);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	397 double tmp = data (i);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	398
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	399 if (xisnan (tmp))
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	400 continue;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	401 else if (ix == -1 \|\| tmp > elem (ir, ix))
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	402 idx_arg.elem (ir) = j;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	403 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	404 }
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	405
5275 23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe] jwe parents: 5261 diff changeset	406 octave_idx_type nel = 0;
23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe] jwe parents: 5261 diff changeset	407 for (octave_idx_type j = 0; j < nr; j++)
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	408 if (idx_arg.elem(j) == -1 \|\| elem (j, idx_arg.elem (j)) != 0.)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	409 nel++;
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	410
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	411 result = SparseMatrix (nr, 1, nel);
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	412
5275 23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe] jwe parents: 5261 diff changeset	413 octave_idx_type ii = 0;
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	414 result.xcidx (0) = 0;
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	415 result.xcidx (1) = nel;
5275 23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe] jwe parents: 5261 diff changeset	416 for (octave_idx_type j = 0; j < nr; j++)
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	417 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	418 if (idx_arg(j) == -1)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	419 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	420 idx_arg(j) = 0;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	421 result.xdata (ii) = octave_NaN;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	422 result.xridx (ii++) = j;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	423 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	424 else
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	425 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	426 double tmp = elem (j, idx_arg(j));
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	427 if (tmp != 0.)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	428 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	429 result.xdata (ii) = tmp;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	430 result.xridx (ii++) = j;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	431 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	432 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	433 }
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	434 }
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	435
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	436 return result;
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	437 }
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	438
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	439 SparseMatrix
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	440 SparseMatrix::min (int dim) const
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	441 {
9790 a5035bc7fbfb rewrite dispatch part & slightly improve min,max,cummin,cummax Jaroslav Hajek <highegg@gmail.com> parents: 9469 diff changeset	442 Array<octave_idx_type> dummy_idx;
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	443 return min (dummy_idx, dim);
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	444 }
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	445
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	446 SparseMatrix
9790 a5035bc7fbfb rewrite dispatch part & slightly improve min,max,cummin,cummax Jaroslav Hajek <highegg@gmail.com> parents: 9469 diff changeset	447 SparseMatrix::min (Array<octave_idx_type>& idx_arg, int dim) const
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	448 {
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	449 SparseMatrix result;
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	450 dim_vector dv = dims ();
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	451
9790 a5035bc7fbfb rewrite dispatch part & slightly improve min,max,cummin,cummax Jaroslav Hajek <highegg@gmail.com> parents: 9469 diff changeset	452 if (dv.numel () == 0 \|\| dim >= dv.length ())
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	453 return result;
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	454
9790 a5035bc7fbfb rewrite dispatch part & slightly improve min,max,cummin,cummax Jaroslav Hajek <highegg@gmail.com> parents: 9469 diff changeset	455 if (dim < 0)
a5035bc7fbfb rewrite dispatch part & slightly improve min,max,cummin,cummax Jaroslav Hajek <highegg@gmail.com> parents: 9469 diff changeset	456 dim = dv.first_non_singleton ();
a5035bc7fbfb rewrite dispatch part & slightly improve min,max,cummin,cummax Jaroslav Hajek <highegg@gmail.com> parents: 9469 diff changeset	457
5275 23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe] jwe parents: 5261 diff changeset	458 octave_idx_type nr = dv(0);
23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe] jwe parents: 5261 diff changeset	459 octave_idx_type nc = dv(1);
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	460
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	461 if (dim == 0)
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	462 {
9790 a5035bc7fbfb rewrite dispatch part & slightly improve min,max,cummin,cummax Jaroslav Hajek <highegg@gmail.com> parents: 9469 diff changeset	463 idx_arg.clear (1, nc);
5275 23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe] jwe parents: 5261 diff changeset	464 octave_idx_type nel = 0;
23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe] jwe parents: 5261 diff changeset	465 for (octave_idx_type j = 0; j < nc; j++)
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	466 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	467 double tmp_min = octave_NaN;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	468 octave_idx_type idx_j = 0;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	469 for (octave_idx_type i = cidx(j); i < cidx(j+1); i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	470 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	471 if (ridx(i) != idx_j)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	472 break;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	473 else
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	474 idx_j++;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	475 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	476
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	477 if (idx_j != nr)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	478 tmp_min = 0.;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	479
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	480 for (octave_idx_type i = cidx(j); i < cidx(j+1); i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	481 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	482 double tmp = data (i);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	483
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	484 if (xisnan (tmp))
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	485 continue;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	486 else if (xisnan (tmp_min) \|\| tmp < tmp_min)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	487 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	488 idx_j = ridx (i);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	489 tmp_min = tmp;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	490 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	491
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	492 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	493
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	494 idx_arg.elem (j) = xisnan (tmp_min) ? 0 : idx_j;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	495 if (tmp_min != 0.)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	496 nel++;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	497 }
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	498
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	499 result = SparseMatrix (1, nc, nel);
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	500
5275 23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe] jwe parents: 5261 diff changeset	501 octave_idx_type ii = 0;
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	502 result.xcidx (0) = 0;
5275 23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe] jwe parents: 5261 diff changeset	503 for (octave_idx_type j = 0; j < nc; j++)
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	504 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	505 double tmp = elem (idx_arg(j), j);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	506 if (tmp != 0.)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	507 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	508 result.xdata (ii) = tmp;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	509 result.xridx (ii++) = 0;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	510 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	511 result.xcidx (j+1) = ii;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	512
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	513 }
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	514 }
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	515 else
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	516 {
10350 12884915a8e4 merge MArray classes & improve Array interface Jaroslav Hajek <highegg@gmail.com> parents: 10314 diff changeset	517 idx_arg.resize (nr, 1, 0);
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	518
5275 23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe] jwe parents: 5261 diff changeset	519 for (octave_idx_type i = cidx(0); i < cidx(1); i++)
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	520 idx_arg.elem(ridx(i)) = -1;
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	521
5275 23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe] jwe parents: 5261 diff changeset	522 for (octave_idx_type j = 0; j < nc; j++)
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	523 for (octave_idx_type i = 0; i < nr; i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	524 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	525 if (idx_arg.elem(i) != -1)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	526 continue;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	527 bool found = false;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	528 for (octave_idx_type k = cidx(j); k < cidx(j+1); k++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	529 if (ridx(k) == i)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	530 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	531 found = true;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	532 break;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	533 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	534
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	535 if (!found)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	536 idx_arg.elem(i) = j;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	537
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	538 }
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	539
5275 23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe] jwe parents: 5261 diff changeset	540 for (octave_idx_type j = 0; j < nc; j++)
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	541 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	542 for (octave_idx_type i = cidx(j); i < cidx(j+1); i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	543 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	544 octave_idx_type ir = ridx (i);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	545 octave_idx_type ix = idx_arg.elem (ir);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	546 double tmp = data (i);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	547
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	548 if (xisnan (tmp))
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	549 continue;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	550 else if (ix == -1 \|\| tmp < elem (ir, ix))
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	551 idx_arg.elem (ir) = j;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	552 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	553 }
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	554
5275 23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe] jwe parents: 5261 diff changeset	555 octave_idx_type nel = 0;
23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe] jwe parents: 5261 diff changeset	556 for (octave_idx_type j = 0; j < nr; j++)
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	557 if (idx_arg.elem(j) == -1 \|\| elem (j, idx_arg.elem (j)) != 0.)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	558 nel++;
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	559
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	560 result = SparseMatrix (nr, 1, nel);
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	561
5275 23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe] jwe parents: 5261 diff changeset	562 octave_idx_type ii = 0;
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	563 result.xcidx (0) = 0;
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	564 result.xcidx (1) = nel;
5275 23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe] jwe parents: 5261 diff changeset	565 for (octave_idx_type j = 0; j < nr; j++)
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	566 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	567 if (idx_arg(j) == -1)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	568 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	569 idx_arg(j) = 0;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	570 result.xdata (ii) = octave_NaN;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	571 result.xridx (ii++) = j;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	572 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	573 else
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	574 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	575 double tmp = elem (j, idx_arg(j));
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	576 if (tmp != 0.)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	577 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	578 result.xdata (ii) = tmp;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	579 result.xridx (ii++) = j;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	580 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	581 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	582 }
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	583 }
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	584
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	585 return result;
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	586 }
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	587
8303 b11c31849b44 improve norm computation capabilities Jaroslav Hajek <highegg@gmail.com> parents: 7922 diff changeset	588 RowVector
b11c31849b44 improve norm computation capabilities Jaroslav Hajek <highegg@gmail.com> parents: 7922 diff changeset	589 SparseMatrix::row (octave_idx_type i) const
b11c31849b44 improve norm computation capabilities Jaroslav Hajek <highegg@gmail.com> parents: 7922 diff changeset	590 {
b11c31849b44 improve norm computation capabilities Jaroslav Hajek <highegg@gmail.com> parents: 7922 diff changeset	591 octave_idx_type nc = columns ();
b11c31849b44 improve norm computation capabilities Jaroslav Hajek <highegg@gmail.com> parents: 7922 diff changeset	592 RowVector retval (nc, 0);
b11c31849b44 improve norm computation capabilities Jaroslav Hajek <highegg@gmail.com> parents: 7922 diff changeset	593
b11c31849b44 improve norm computation capabilities Jaroslav Hajek <highegg@gmail.com> parents: 7922 diff changeset	594 for (octave_idx_type j = 0; j < nc; j++)
b11c31849b44 improve norm computation capabilities Jaroslav Hajek <highegg@gmail.com> parents: 7922 diff changeset	595 for (octave_idx_type k = cidx (j); k < cidx (j+1); k++)
b11c31849b44 improve norm computation capabilities Jaroslav Hajek <highegg@gmail.com> parents: 7922 diff changeset	596 {
b11c31849b44 improve norm computation capabilities Jaroslav Hajek <highegg@gmail.com> parents: 7922 diff changeset	597 if (ridx (k) == i)
b11c31849b44 improve norm computation capabilities Jaroslav Hajek <highegg@gmail.com> parents: 7922 diff changeset	598 {
b11c31849b44 improve norm computation capabilities Jaroslav Hajek <highegg@gmail.com> parents: 7922 diff changeset	599 retval(j) = data (k);
b11c31849b44 improve norm computation capabilities Jaroslav Hajek <highegg@gmail.com> parents: 7922 diff changeset	600 break;
b11c31849b44 improve norm computation capabilities Jaroslav Hajek <highegg@gmail.com> parents: 7922 diff changeset	601 }
b11c31849b44 improve norm computation capabilities Jaroslav Hajek <highegg@gmail.com> parents: 7922 diff changeset	602 }
b11c31849b44 improve norm computation capabilities Jaroslav Hajek <highegg@gmail.com> parents: 7922 diff changeset	603
b11c31849b44 improve norm computation capabilities Jaroslav Hajek <highegg@gmail.com> parents: 7922 diff changeset	604 return retval;
b11c31849b44 improve norm computation capabilities Jaroslav Hajek <highegg@gmail.com> parents: 7922 diff changeset	605 }
b11c31849b44 improve norm computation capabilities Jaroslav Hajek <highegg@gmail.com> parents: 7922 diff changeset	606
b11c31849b44 improve norm computation capabilities Jaroslav Hajek <highegg@gmail.com> parents: 7922 diff changeset	607 ColumnVector
b11c31849b44 improve norm computation capabilities Jaroslav Hajek <highegg@gmail.com> parents: 7922 diff changeset	608 SparseMatrix::column (octave_idx_type i) const
b11c31849b44 improve norm computation capabilities Jaroslav Hajek <highegg@gmail.com> parents: 7922 diff changeset	609 {
b11c31849b44 improve norm computation capabilities Jaroslav Hajek <highegg@gmail.com> parents: 7922 diff changeset	610 octave_idx_type nr = rows ();
b11c31849b44 improve norm computation capabilities Jaroslav Hajek <highegg@gmail.com> parents: 7922 diff changeset	611 ColumnVector retval (nr);
b11c31849b44 improve norm computation capabilities Jaroslav Hajek <highegg@gmail.com> parents: 7922 diff changeset	612
b11c31849b44 improve norm computation capabilities Jaroslav Hajek <highegg@gmail.com> parents: 7922 diff changeset	613 for (octave_idx_type k = cidx (i); k < cidx (i+1); k++)
b11c31849b44 improve norm computation capabilities Jaroslav Hajek <highegg@gmail.com> parents: 7922 diff changeset	614 retval(ridx (k)) = data (k);
b11c31849b44 improve norm computation capabilities Jaroslav Hajek <highegg@gmail.com> parents: 7922 diff changeset	615
b11c31849b44 improve norm computation capabilities Jaroslav Hajek <highegg@gmail.com> parents: 7922 diff changeset	616 return retval;
b11c31849b44 improve norm computation capabilities Jaroslav Hajek <highegg@gmail.com> parents: 7922 diff changeset	617 }
b11c31849b44 improve norm computation capabilities Jaroslav Hajek <highegg@gmail.com> parents: 7922 diff changeset	618
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	619 SparseMatrix
5275 23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe] jwe parents: 5261 diff changeset	620 SparseMatrix::concat (const SparseMatrix& rb, const Array<octave_idx_type>& ra_idx)
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	621 {
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	622 // Don't use numel to avoid all possiblity of an overflow
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	623 if (rb.rows () > 0 && rb.cols () > 0)
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	624 insert (rb, ra_idx(0), ra_idx(1));
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	625 return *this;
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	626 }
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	627
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	628 SparseComplexMatrix
5275 23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe] jwe parents: 5261 diff changeset	629 SparseMatrix::concat (const SparseComplexMatrix& rb, const Array<octave_idx_type>& ra_idx)
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	630 {
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	631 SparseComplexMatrix retval (*this);
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	632 if (rb.rows () > 0 && rb.cols () > 0)
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	633 retval.insert (rb, ra_idx(0), ra_idx(1));
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	634 return retval;
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	635 }
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	636
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	637 SparseMatrix
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	638 real (const SparseComplexMatrix& a)
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	639 {
5275 23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe] jwe parents: 5261 diff changeset	640 octave_idx_type nr = a.rows ();
23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe] jwe parents: 5261 diff changeset	641 octave_idx_type nc = a.cols ();
5681 233d98d95659 [project @ 2006-03-16 17:48:55 by dbateman] dbateman parents: 5630 diff changeset	642 octave_idx_type nz = a.nnz ();
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	643 SparseMatrix r (nr, nc, nz);
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	644
5275 23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe] jwe parents: 5261 diff changeset	645 for (octave_idx_type i = 0; i < nc +1; i++)
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	646 r.cidx(i) = a.cidx(i);
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	647
5275 23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe] jwe parents: 5261 diff changeset	648 for (octave_idx_type i = 0; i < nz; i++)
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	649 {
5261 90a9058de7e8 [project @ 2005-03-31 02:48:38 by jwe] jwe parents: 5203 diff changeset	650 r.data(i) = std::real (a.data(i));
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	651 r.ridx(i) = a.ridx(i);
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	652 }
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	653
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	654 return r;
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	655 }
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	656
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	657 SparseMatrix
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	658 imag (const SparseComplexMatrix& a)
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	659 {
5275 23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe] jwe parents: 5261 diff changeset	660 octave_idx_type nr = a.rows ();
23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe] jwe parents: 5261 diff changeset	661 octave_idx_type nc = a.cols ();
5681 233d98d95659 [project @ 2006-03-16 17:48:55 by dbateman] dbateman parents: 5630 diff changeset	662 octave_idx_type nz = a.nnz ();
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	663 SparseMatrix r (nr, nc, nz);
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	664
5275 23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe] jwe parents: 5261 diff changeset	665 for (octave_idx_type i = 0; i < nc +1; i++)
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	666 r.cidx(i) = a.cidx(i);
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	667
5275 23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe] jwe parents: 5261 diff changeset	668 for (octave_idx_type i = 0; i < nz; i++)
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	669 {
5261 90a9058de7e8 [project @ 2005-03-31 02:48:38 by jwe] jwe parents: 5203 diff changeset	670 r.data(i) = std::imag (a.data(i));
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	671 r.ridx(i) = a.ridx(i);
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	672 }
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	673
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	674 return r;
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	675 }
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	676
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	677 SparseMatrix
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	678 atan2 (const double& x, const SparseMatrix& y)
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	679 {
5275 23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe] jwe parents: 5261 diff changeset	680 octave_idx_type nr = y.rows ();
23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe] jwe parents: 5261 diff changeset	681 octave_idx_type nc = y.cols ();
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	682
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	683 if (x == 0.)
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	684 return SparseMatrix (nr, nc);
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	685 else
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	686 {
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	687 // Its going to be basically full, so this is probably the
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	688 // best way to handle it.
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	689 Matrix tmp (nr, nc, atan2 (x, 0.));
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	690
5275 23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe] jwe parents: 5261 diff changeset	691 for (octave_idx_type j = 0; j < nc; j++)
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	692 for (octave_idx_type i = y.cidx (j); i < y.cidx (j+1); i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	693 tmp.elem (y.ridx(i), j) = atan2 (x, y.data(i));
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	694
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	695 return SparseMatrix (tmp);
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	696 }
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	697 }
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	698
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	699 SparseMatrix
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	700 atan2 (const SparseMatrix& x, const double& y)
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	701 {
5275 23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe] jwe parents: 5261 diff changeset	702 octave_idx_type nr = x.rows ();
23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe] jwe parents: 5261 diff changeset	703 octave_idx_type nc = x.cols ();
5681 233d98d95659 [project @ 2006-03-16 17:48:55 by dbateman] dbateman parents: 5630 diff changeset	704 octave_idx_type nz = x.nnz ();
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	705
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	706 SparseMatrix retval (nr, nc, nz);
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	707
5275 23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe] jwe parents: 5261 diff changeset	708 octave_idx_type ii = 0;
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	709 retval.xcidx(0) = 0;
5275 23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe] jwe parents: 5261 diff changeset	710 for (octave_idx_type i = 0; i < nc; i++)
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	711 {
5275 23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe] jwe parents: 5261 diff changeset	712 for (octave_idx_type j = x.cidx(i); j < x.cidx(i+1); j++)
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	713 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	714 double tmp = atan2 (x.data(j), y);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	715 if (tmp != 0.)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	716 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	717 retval.xdata (ii) = tmp;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	718 retval.xridx (ii++) = x.ridx (j);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	719 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	720 }
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	721 retval.xcidx (i+1) = ii;
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	722 }
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	723
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	724 if (ii != nz)
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	725 {
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	726 SparseMatrix retval2 (nr, nc, ii);
5275 23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe] jwe parents: 5261 diff changeset	727 for (octave_idx_type i = 0; i < nc+1; i++)
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	728 retval2.xcidx (i) = retval.cidx (i);
5275 23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe] jwe parents: 5261 diff changeset	729 for (octave_idx_type i = 0; i < ii; i++)
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	730 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	731 retval2.xdata (i) = retval.data (i);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	732 retval2.xridx (i) = retval.ridx (i);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	733 }
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	734 return retval2;
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	735 }
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	736 else
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	737 return retval;
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	738 }
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	739
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	740 SparseMatrix
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	741 atan2 (const SparseMatrix& x, const SparseMatrix& y)
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	742 {
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	743 SparseMatrix r;
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	744
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	745 if ((x.rows() == y.rows()) && (x.cols() == y.cols()))
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	746 {
5275 23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe] jwe parents: 5261 diff changeset	747 octave_idx_type x_nr = x.rows ();
23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe] jwe parents: 5261 diff changeset	748 octave_idx_type x_nc = x.cols ();
23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe] jwe parents: 5261 diff changeset	749
23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe] jwe parents: 5261 diff changeset	750 octave_idx_type y_nr = y.rows ();
23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe] jwe parents: 5261 diff changeset	751 octave_idx_type y_nc = y.cols ();
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	752
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	753 if (x_nr != y_nr \|\| x_nc != y_nc)
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	754 gripe_nonconformant ("atan2", x_nr, x_nc, y_nr, y_nc);
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	755 else
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	756 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	757 r = SparseMatrix (x_nr, x_nc, (x.nnz () + y.nnz ()));
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	758
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	759 octave_idx_type jx = 0;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	760 r.cidx (0) = 0;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	761 for (octave_idx_type i = 0 ; i < x_nc ; i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	762 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	763 octave_idx_type ja = x.cidx(i);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	764 octave_idx_type ja_max = x.cidx(i+1);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	765 bool ja_lt_max= ja < ja_max;
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	766
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	767 octave_idx_type jb = y.cidx(i);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	768 octave_idx_type jb_max = y.cidx(i+1);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	769 bool jb_lt_max = jb < jb_max;
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	770
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	771 while (ja_lt_max \|\| jb_lt_max )
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	772 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	773 octave_quit ();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	774 if ((! jb_lt_max) \|\|
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	775 (ja_lt_max && (x.ridx(ja) < y.ridx(jb))))
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	776 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	777 r.ridx(jx) = x.ridx(ja);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	778 r.data(jx) = atan2 (x.data(ja), 0.);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	779 jx++;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	780 ja++;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	781 ja_lt_max= ja < ja_max;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	782 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	783 else if (( !ja_lt_max ) \|\|
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	784 (jb_lt_max && (y.ridx(jb) < x.ridx(ja)) ) )
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	785 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	786 jb++;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	787 jb_lt_max= jb < jb_max;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	788 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	789 else
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	790 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	791 double tmp = atan2 (x.data(ja), y.data(jb));
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	792 if (tmp != 0.)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	793 {
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	794 r.data(jx) = tmp;
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	795 r.ridx(jx) = x.ridx(ja);
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	796 jx++;
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	797 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	798 ja++;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	799 ja_lt_max= ja < ja_max;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	800 jb++;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	801 jb_lt_max= jb < jb_max;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	802 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	803 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	804 r.cidx(i+1) = jx;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	805 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	806
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	807 r.maybe_compress ();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	808 }
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	809 }
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	810 else
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	811 (*current_liboctave_error_handler) ("matrix size mismatch");
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	812
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	813 return r;
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	814 }
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	815
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	816 SparseMatrix
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	817 SparseMatrix::inverse (void) const
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	818 {
5275 23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe] jwe parents: 5261 diff changeset	819 octave_idx_type info;
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	820 double rcond;
5785 6b9cec830d72 [project @ 2006-05-03 19:32:46 by dbateman] dbateman parents: 5775 diff changeset	821 MatrixType mattype (*this);
5506 b4cfbb0ec8c4 [project @ 2005-10-23 19:09:32 by dbateman] dbateman parents: 5451 diff changeset	822 return inverse (mattype, info, rcond, 0, 0);
b4cfbb0ec8c4 [project @ 2005-10-23 19:09:32 by dbateman] dbateman parents: 5451 diff changeset	823 }
b4cfbb0ec8c4 [project @ 2005-10-23 19:09:32 by dbateman] dbateman parents: 5451 diff changeset	824
b4cfbb0ec8c4 [project @ 2005-10-23 19:09:32 by dbateman] dbateman parents: 5451 diff changeset	825 SparseMatrix
5785 6b9cec830d72 [project @ 2006-05-03 19:32:46 by dbateman] dbateman parents: 5775 diff changeset	826 SparseMatrix::inverse (MatrixType& mattype) const
5506 b4cfbb0ec8c4 [project @ 2005-10-23 19:09:32 by dbateman] dbateman parents: 5451 diff changeset	827 {
b4cfbb0ec8c4 [project @ 2005-10-23 19:09:32 by dbateman] dbateman parents: 5451 diff changeset	828 octave_idx_type info;
b4cfbb0ec8c4 [project @ 2005-10-23 19:09:32 by dbateman] dbateman parents: 5451 diff changeset	829 double rcond;
b4cfbb0ec8c4 [project @ 2005-10-23 19:09:32 by dbateman] dbateman parents: 5451 diff changeset	830 return inverse (mattype, info, rcond, 0, 0);
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	831 }
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	832
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	833 SparseMatrix
5785 6b9cec830d72 [project @ 2006-05-03 19:32:46 by dbateman] dbateman parents: 5775 diff changeset	834 SparseMatrix::inverse (MatrixType& mattype, octave_idx_type& info) const
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	835 {
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	836 double rcond;
5506 b4cfbb0ec8c4 [project @ 2005-10-23 19:09:32 by dbateman] dbateman parents: 5451 diff changeset	837 return inverse (mattype, info, rcond, 0, 0);
b4cfbb0ec8c4 [project @ 2005-10-23 19:09:32 by dbateman] dbateman parents: 5451 diff changeset	838 }
b4cfbb0ec8c4 [project @ 2005-10-23 19:09:32 by dbateman] dbateman parents: 5451 diff changeset	839
b4cfbb0ec8c4 [project @ 2005-10-23 19:09:32 by dbateman] dbateman parents: 5451 diff changeset	840 SparseMatrix
5785 6b9cec830d72 [project @ 2006-05-03 19:32:46 by dbateman] dbateman parents: 5775 diff changeset	841 SparseMatrix::dinverse (MatrixType &mattyp, octave_idx_type& info,
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	842 double& rcond, const bool,
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	843 const bool calccond) const
5506 b4cfbb0ec8c4 [project @ 2005-10-23 19:09:32 by dbateman] dbateman parents: 5451 diff changeset	844 {
b4cfbb0ec8c4 [project @ 2005-10-23 19:09:32 by dbateman] dbateman parents: 5451 diff changeset	845 SparseMatrix retval;
b4cfbb0ec8c4 [project @ 2005-10-23 19:09:32 by dbateman] dbateman parents: 5451 diff changeset	846
b4cfbb0ec8c4 [project @ 2005-10-23 19:09:32 by dbateman] dbateman parents: 5451 diff changeset	847 octave_idx_type nr = rows ();
b4cfbb0ec8c4 [project @ 2005-10-23 19:09:32 by dbateman] dbateman parents: 5451 diff changeset	848 octave_idx_type nc = cols ();
b4cfbb0ec8c4 [project @ 2005-10-23 19:09:32 by dbateman] dbateman parents: 5451 diff changeset	849 info = 0;
b4cfbb0ec8c4 [project @ 2005-10-23 19:09:32 by dbateman] dbateman parents: 5451 diff changeset	850
b4cfbb0ec8c4 [project @ 2005-10-23 19:09:32 by dbateman] dbateman parents: 5451 diff changeset	851 if (nr == 0 \|\| nc == 0 \|\| nr != nc)
b4cfbb0ec8c4 [project @ 2005-10-23 19:09:32 by dbateman] dbateman parents: 5451 diff changeset	852 (*current_liboctave_error_handler) ("inverse requires square matrix");
b4cfbb0ec8c4 [project @ 2005-10-23 19:09:32 by dbateman] dbateman parents: 5451 diff changeset	853 else
b4cfbb0ec8c4 [project @ 2005-10-23 19:09:32 by dbateman] dbateman parents: 5451 diff changeset	854 {
b4cfbb0ec8c4 [project @ 2005-10-23 19:09:32 by dbateman] dbateman parents: 5451 diff changeset	855 // Print spparms("spumoni") info if requested
b4cfbb0ec8c4 [project @ 2005-10-23 19:09:32 by dbateman] dbateman parents: 5451 diff changeset	856 int typ = mattyp.type ();
b4cfbb0ec8c4 [project @ 2005-10-23 19:09:32 by dbateman] dbateman parents: 5451 diff changeset	857 mattyp.info ();
b4cfbb0ec8c4 [project @ 2005-10-23 19:09:32 by dbateman] dbateman parents: 5451 diff changeset	858
5785 6b9cec830d72 [project @ 2006-05-03 19:32:46 by dbateman] dbateman parents: 5775 diff changeset	859 if (typ == MatrixType::Diagonal \|\|
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	860 typ == MatrixType::Permuted_Diagonal)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	861 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	862 if (typ == MatrixType::Permuted_Diagonal)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	863 retval = transpose();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	864 else
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	865 retval = *this;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	866
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	867 // Force make_unique to be called
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	868 double *v = retval.data();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	869
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	870 if (calccond)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	871 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	872 double dmax = 0., dmin = octave_Inf;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	873 for (octave_idx_type i = 0; i < nr; i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	874 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	875 double tmp = fabs(v[i]);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	876 if (tmp > dmax)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	877 dmax = tmp;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	878 if (tmp < dmin)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	879 dmin = tmp;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	880 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	881 rcond = dmin / dmax;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	882 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	883
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	884 for (octave_idx_type i = 0; i < nr; i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	885 v[i] = 1.0 / v[i];
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	886 }
5506 b4cfbb0ec8c4 [project @ 2005-10-23 19:09:32 by dbateman] dbateman parents: 5451 diff changeset	887 else
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	888 (*current_liboctave_error_handler) ("incorrect matrix type");
5506 b4cfbb0ec8c4 [project @ 2005-10-23 19:09:32 by dbateman] dbateman parents: 5451 diff changeset	889 }
b4cfbb0ec8c4 [project @ 2005-10-23 19:09:32 by dbateman] dbateman parents: 5451 diff changeset	890
b4cfbb0ec8c4 [project @ 2005-10-23 19:09:32 by dbateman] dbateman parents: 5451 diff changeset	891 return retval;
b4cfbb0ec8c4 [project @ 2005-10-23 19:09:32 by dbateman] dbateman parents: 5451 diff changeset	892 }
b4cfbb0ec8c4 [project @ 2005-10-23 19:09:32 by dbateman] dbateman parents: 5451 diff changeset	893
b4cfbb0ec8c4 [project @ 2005-10-23 19:09:32 by dbateman] dbateman parents: 5451 diff changeset	894 SparseMatrix
5785 6b9cec830d72 [project @ 2006-05-03 19:32:46 by dbateman] dbateman parents: 5775 diff changeset	895 SparseMatrix::tinverse (MatrixType &mattyp, octave_idx_type& info,
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	896 double& rcond, const bool,
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	897 const bool calccond) const
5506 b4cfbb0ec8c4 [project @ 2005-10-23 19:09:32 by dbateman] dbateman parents: 5451 diff changeset	898 {
b4cfbb0ec8c4 [project @ 2005-10-23 19:09:32 by dbateman] dbateman parents: 5451 diff changeset	899 SparseMatrix retval;
b4cfbb0ec8c4 [project @ 2005-10-23 19:09:32 by dbateman] dbateman parents: 5451 diff changeset	900
b4cfbb0ec8c4 [project @ 2005-10-23 19:09:32 by dbateman] dbateman parents: 5451 diff changeset	901 octave_idx_type nr = rows ();
b4cfbb0ec8c4 [project @ 2005-10-23 19:09:32 by dbateman] dbateman parents: 5451 diff changeset	902 octave_idx_type nc = cols ();
b4cfbb0ec8c4 [project @ 2005-10-23 19:09:32 by dbateman] dbateman parents: 5451 diff changeset	903 info = 0;
b4cfbb0ec8c4 [project @ 2005-10-23 19:09:32 by dbateman] dbateman parents: 5451 diff changeset	904
b4cfbb0ec8c4 [project @ 2005-10-23 19:09:32 by dbateman] dbateman parents: 5451 diff changeset	905 if (nr == 0 \|\| nc == 0 \|\| nr != nc)
b4cfbb0ec8c4 [project @ 2005-10-23 19:09:32 by dbateman] dbateman parents: 5451 diff changeset	906 (*current_liboctave_error_handler) ("inverse requires square matrix");
b4cfbb0ec8c4 [project @ 2005-10-23 19:09:32 by dbateman] dbateman parents: 5451 diff changeset	907 else
b4cfbb0ec8c4 [project @ 2005-10-23 19:09:32 by dbateman] dbateman parents: 5451 diff changeset	908 {
b4cfbb0ec8c4 [project @ 2005-10-23 19:09:32 by dbateman] dbateman parents: 5451 diff changeset	909 // Print spparms("spumoni") info if requested
b4cfbb0ec8c4 [project @ 2005-10-23 19:09:32 by dbateman] dbateman parents: 5451 diff changeset	910 int typ = mattyp.type ();
b4cfbb0ec8c4 [project @ 2005-10-23 19:09:32 by dbateman] dbateman parents: 5451 diff changeset	911 mattyp.info ();
b4cfbb0ec8c4 [project @ 2005-10-23 19:09:32 by dbateman] dbateman parents: 5451 diff changeset	912
5785 6b9cec830d72 [project @ 2006-05-03 19:32:46 by dbateman] dbateman parents: 5775 diff changeset	913 if (typ == MatrixType::Upper \|\| typ == MatrixType::Permuted_Upper \|\|
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	914 typ == MatrixType::Lower \|\| typ == MatrixType::Permuted_Lower)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	915 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	916 double anorm = 0.;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	917 double ainvnorm = 0.;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	918
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	919 if (calccond)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	920 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	921 // Calculate the 1-norm of matrix for rcond calculation
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	922 for (octave_idx_type j = 0; j < nr; j++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	923 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	924 double atmp = 0.;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	925 for (octave_idx_type i = cidx(j); i < cidx(j+1); i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	926 atmp += fabs(data(i));
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	927 if (atmp > anorm)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	928 anorm = atmp;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	929 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	930 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	931
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	932 if (typ == MatrixType::Upper \|\| typ == MatrixType::Lower)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	933 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	934 octave_idx_type nz = nnz ();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	935 octave_idx_type cx = 0;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	936 octave_idx_type nz2 = nz;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	937 retval = SparseMatrix (nr, nc, nz2);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	938
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	939 for (octave_idx_type i = 0; i < nr; i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	940 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	941 octave_quit ();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	942 // place the 1 in the identity position
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	943 octave_idx_type cx_colstart = cx;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	944
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	945 if (cx == nz2)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	946 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	947 nz2 *= 2;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	948 retval.change_capacity (nz2);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	949 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	950
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	951 retval.xcidx(i) = cx;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	952 retval.xridx(cx) = i;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	953 retval.xdata(cx) = 1.0;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	954 cx++;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	955
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	956 // iterate accross columns of input matrix
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	957 for (octave_idx_type j = i+1; j < nr; j++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	958 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	959 double v = 0.;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	960 // iterate to calculate sum
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	961 octave_idx_type colXp = retval.xcidx(i);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	962 octave_idx_type colUp = cidx(j);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	963 octave_idx_type rpX, rpU;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	964
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	965 if (cidx(j) == cidx(j+1))
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	966 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	967 (*current_liboctave_error_handler)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	968 ("division by zero");
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	969 goto inverse_singular;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	970 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	971
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	972 do
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	973 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	974 octave_quit ();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	975 rpX = retval.xridx(colXp);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	976 rpU = ridx(colUp);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	977
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	978 if (rpX < rpU)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	979 colXp++;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	980 else if (rpX > rpU)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	981 colUp++;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	982 else
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	983 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	984 v -= retval.xdata(colXp) * data(colUp);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	985 colXp++;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	986 colUp++;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	987 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	988 } while ((rpX<j) && (rpU<j) &&
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	989 (colXp<cx) && (colUp<nz));
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	990
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	991 // get A(m,m)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	992 if (typ == MatrixType::Upper)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	993 colUp = cidx(j+1) - 1;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	994 else
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	995 colUp = cidx(j);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	996 double pivot = data(colUp);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	997 if (pivot == 0. \|\| ridx(colUp) != j)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	998 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	999 (*current_liboctave_error_handler)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1000 ("division by zero");
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1001 goto inverse_singular;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1002 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1003
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1004 if (v != 0.)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1005 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1006 if (cx == nz2)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1007 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1008 nz2 *= 2;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1009 retval.change_capacity (nz2);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1010 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1011
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1012 retval.xridx(cx) = j;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1013 retval.xdata(cx) = v / pivot;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1014 cx++;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1015 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1016 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1017
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1018 // get A(m,m)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1019 octave_idx_type colUp;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1020 if (typ == MatrixType::Upper)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1021 colUp = cidx(i+1) - 1;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1022 else
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1023 colUp = cidx(i);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1024 double pivot = data(colUp);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1025 if (pivot == 0. \|\| ridx(colUp) != i)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1026 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1027 (*current_liboctave_error_handler) ("division by zero");
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1028 goto inverse_singular;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1029 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1030
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1031 if (pivot != 1.0)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1032 for (octave_idx_type j = cx_colstart; j < cx; j++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1033 retval.xdata(j) /= pivot;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1034 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1035 retval.xcidx(nr) = cx;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1036 retval.maybe_compress ();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1037 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1038 else
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1039 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1040 octave_idx_type nz = nnz ();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1041 octave_idx_type cx = 0;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1042 octave_idx_type nz2 = nz;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1043 retval = SparseMatrix (nr, nc, nz2);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1044
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1045 OCTAVE_LOCAL_BUFFER (double, work, nr);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1046 OCTAVE_LOCAL_BUFFER (octave_idx_type, rperm, nr);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1047
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1048 octave_idx_type *perm = mattyp.triangular_perm();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1049 if (typ == MatrixType::Permuted_Upper)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1050 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1051 for (octave_idx_type i = 0; i < nr; i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1052 rperm[perm[i]] = i;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1053 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1054 else
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1055 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1056 for (octave_idx_type i = 0; i < nr; i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1057 rperm[i] = perm[i];
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1058 for (octave_idx_type i = 0; i < nr; i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1059 perm[rperm[i]] = i;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1060 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1061
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1062 for (octave_idx_type i = 0; i < nr; i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1063 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1064 octave_quit ();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1065 octave_idx_type iidx = rperm[i];
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1066
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1067 for (octave_idx_type j = 0; j < nr; j++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1068 work[j] = 0.;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1069
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1070 // place the 1 in the identity position
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1071 work[iidx] = 1.0;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1072
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1073 // iterate accross columns of input matrix
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1074 for (octave_idx_type j = iidx+1; j < nr; j++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1075 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1076 double v = 0.;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1077 octave_idx_type jidx = perm[j];
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1078 // iterate to calculate sum
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1079 for (octave_idx_type k = cidx(jidx);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1080 k < cidx(jidx+1); k++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1081 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1082 octave_quit ();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1083 v -= work[ridx(k)] * data(k);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1084 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1085
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1086 // get A(m,m)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1087 double pivot;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1088 if (typ == MatrixType::Permuted_Upper)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1089 pivot = data(cidx(jidx+1) - 1);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1090 else
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1091 pivot = data(cidx(jidx));
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1092 if (pivot == 0.)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1093 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1094 (*current_liboctave_error_handler)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1095 ("division by zero");
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1096 goto inverse_singular;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1097 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1098
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1099 work[j] = v / pivot;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1100 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1101
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1102 // get A(m,m)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1103 octave_idx_type colUp;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1104 if (typ == MatrixType::Permuted_Upper)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1105 colUp = cidx(perm[iidx]+1) - 1;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1106 else
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1107 colUp = cidx(perm[iidx]);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1108
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1109 double pivot = data(colUp);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1110 if (pivot == 0.)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1111 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1112 (*current_liboctave_error_handler)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1113 ("division by zero");
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1114 goto inverse_singular;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1115 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1116
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1117 octave_idx_type new_cx = cx;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1118 for (octave_idx_type j = iidx; j < nr; j++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1119 if (work[j] != 0.0)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1120 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1121 new_cx++;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1122 if (pivot != 1.0)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1123 work[j] /= pivot;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1124 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1125
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1126 if (cx < new_cx)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1127 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1128 nz2 = (2nz2 < new_cx ? new_cx : 2nz2);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1129 retval.change_capacity (nz2);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1130 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1131
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1132 retval.xcidx(i) = cx;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1133 for (octave_idx_type j = iidx; j < nr; j++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1134 if (work[j] != 0.)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1135 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1136 retval.xridx(cx) = j;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1137 retval.xdata(cx++) = work[j];
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1138 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1139 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1140
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1141 retval.xcidx(nr) = cx;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1142 retval.maybe_compress ();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1143 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1144
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1145 if (calccond)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1146 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1147 // Calculate the 1-norm of inverse matrix for rcond calculation
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1148 for (octave_idx_type j = 0; j < nr; j++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1149 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1150 double atmp = 0.;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1151 for (octave_idx_type i = retval.cidx(j);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1152 i < retval.cidx(j+1); i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1153 atmp += fabs(retval.data(i));
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1154 if (atmp > ainvnorm)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1155 ainvnorm = atmp;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1156 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1157
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1158 rcond = 1. / ainvnorm / anorm;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1159 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1160 }
5506 b4cfbb0ec8c4 [project @ 2005-10-23 19:09:32 by dbateman] dbateman parents: 5451 diff changeset	1161 else
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1162 (*current_liboctave_error_handler) ("incorrect matrix type");
5506 b4cfbb0ec8c4 [project @ 2005-10-23 19:09:32 by dbateman] dbateman parents: 5451 diff changeset	1163 }
b4cfbb0ec8c4 [project @ 2005-10-23 19:09:32 by dbateman] dbateman parents: 5451 diff changeset	1164
b4cfbb0ec8c4 [project @ 2005-10-23 19:09:32 by dbateman] dbateman parents: 5451 diff changeset	1165 return retval;
5876 565d0cd4d9d0 [project @ 2006-07-01 19:42:06 by dbateman] dbateman parents: 5785 diff changeset	1166
565d0cd4d9d0 [project @ 2006-07-01 19:42:06 by dbateman] dbateman parents: 5785 diff changeset	1167 inverse_singular:
565d0cd4d9d0 [project @ 2006-07-01 19:42:06 by dbateman] dbateman parents: 5785 diff changeset	1168 return SparseMatrix();
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	1169 }
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	1170
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	1171 SparseMatrix
5785 6b9cec830d72 [project @ 2006-05-03 19:32:46 by dbateman] dbateman parents: 5775 diff changeset	1172 SparseMatrix::inverse (MatrixType &mattype, octave_idx_type& info,
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1173 double& rcond, int, int calc_cond) const
5506 b4cfbb0ec8c4 [project @ 2005-10-23 19:09:32 by dbateman] dbateman parents: 5451 diff changeset	1174 {
b4cfbb0ec8c4 [project @ 2005-10-23 19:09:32 by dbateman] dbateman parents: 5451 diff changeset	1175 int typ = mattype.type (false);
b4cfbb0ec8c4 [project @ 2005-10-23 19:09:32 by dbateman] dbateman parents: 5451 diff changeset	1176 SparseMatrix ret;
b4cfbb0ec8c4 [project @ 2005-10-23 19:09:32 by dbateman] dbateman parents: 5451 diff changeset	1177
5785 6b9cec830d72 [project @ 2006-05-03 19:32:46 by dbateman] dbateman parents: 5775 diff changeset	1178 if (typ == MatrixType::Unknown)
5506 b4cfbb0ec8c4 [project @ 2005-10-23 19:09:32 by dbateman] dbateman parents: 5451 diff changeset	1179 typ = mattype.type (*this);
b4cfbb0ec8c4 [project @ 2005-10-23 19:09:32 by dbateman] dbateman parents: 5451 diff changeset	1180
5785 6b9cec830d72 [project @ 2006-05-03 19:32:46 by dbateman] dbateman parents: 5775 diff changeset	1181 if (typ == MatrixType::Diagonal \|\| typ == MatrixType::Permuted_Diagonal)
5506 b4cfbb0ec8c4 [project @ 2005-10-23 19:09:32 by dbateman] dbateman parents: 5451 diff changeset	1182 ret = dinverse (mattype, info, rcond, true, calc_cond);
5785 6b9cec830d72 [project @ 2006-05-03 19:32:46 by dbateman] dbateman parents: 5775 diff changeset	1183 else if (typ == MatrixType::Upper \|\| typ == MatrixType::Permuted_Upper)
5506 b4cfbb0ec8c4 [project @ 2005-10-23 19:09:32 by dbateman] dbateman parents: 5451 diff changeset	1184 ret = tinverse (mattype, info, rcond, true, calc_cond).transpose();
5785 6b9cec830d72 [project @ 2006-05-03 19:32:46 by dbateman] dbateman parents: 5775 diff changeset	1185 else if (typ == MatrixType::Lower \|\| typ == MatrixType::Permuted_Lower)
6185 da5a11b3d13e [project @ 2006-11-22 18:57:26 by dbateman] dbateman parents: 5893 diff changeset	1186 {
da5a11b3d13e [project @ 2006-11-22 18:57:26 by dbateman] dbateman parents: 5893 diff changeset	1187 MatrixType newtype = mattype.transpose();
da5a11b3d13e [project @ 2006-11-22 18:57:26 by dbateman] dbateman parents: 5893 diff changeset	1188 ret = transpose().tinverse (newtype, info, rcond, true, calc_cond);
da5a11b3d13e [project @ 2006-11-22 18:57:26 by dbateman] dbateman parents: 5893 diff changeset	1189 }
6840 2f17d5556756 [project @ 2007-08-29 08:37:47 by dbateman] dbateman parents: 6823 diff changeset	1190 else
5506 b4cfbb0ec8c4 [project @ 2005-10-23 19:09:32 by dbateman] dbateman parents: 5451 diff changeset	1191 {
b4cfbb0ec8c4 [project @ 2005-10-23 19:09:32 by dbateman] dbateman parents: 5451 diff changeset	1192 if (mattype.is_hermitian())
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1193 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1194 MatrixType tmp_typ (MatrixType::Upper);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1195 SparseCHOL fact (*this, info, false);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1196 rcond = fact.rcond();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1197 if (info == 0)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1198 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1199 double rcond2;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1200 SparseMatrix Q = fact.Q();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1201 SparseMatrix InvL = fact.L().transpose().tinverse(tmp_typ,
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1202 info, rcond2, true, false);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1203 ret = Q * InvL.transpose() * InvL * Q.transpose();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1204 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1205 else
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1206 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1207 // Matrix is either singular or not positive definite
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1208 mattype.mark_as_unsymmetric ();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1209 typ = MatrixType::Full;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1210 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1211 }
5506 b4cfbb0ec8c4 [project @ 2005-10-23 19:09:32 by dbateman] dbateman parents: 5451 diff changeset	1212
b4cfbb0ec8c4 [project @ 2005-10-23 19:09:32 by dbateman] dbateman parents: 5451 diff changeset	1213 if (!mattype.is_hermitian())
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1214 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1215 octave_idx_type n = rows();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1216 ColumnVector Qinit(n);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1217 for (octave_idx_type i = 0; i < n; i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1218 Qinit(i) = i;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1219
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1220 MatrixType tmp_typ (MatrixType::Upper);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1221 SparseLU fact (*this, Qinit, Matrix(), false, false);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1222 rcond = fact.rcond();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1223 double rcond2;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1224 SparseMatrix InvL = fact.L().transpose().tinverse(tmp_typ,
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1225 info, rcond2, true, false);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1226 SparseMatrix InvU = fact.U().tinverse(tmp_typ, info, rcond2,
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1227 true, false).transpose();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1228 ret = fact.Pc().transpose() * InvU * InvL * fact.Pr();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1229 }
5506 b4cfbb0ec8c4 [project @ 2005-10-23 19:09:32 by dbateman] dbateman parents: 5451 diff changeset	1230 }
b4cfbb0ec8c4 [project @ 2005-10-23 19:09:32 by dbateman] dbateman parents: 5451 diff changeset	1231
b4cfbb0ec8c4 [project @ 2005-10-23 19:09:32 by dbateman] dbateman parents: 5451 diff changeset	1232 return ret;
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	1233 }
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	1234
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	1235 DET
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	1236 SparseMatrix::determinant (void) const
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	1237 {
5275 23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe] jwe parents: 5261 diff changeset	1238 octave_idx_type info;
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	1239 double rcond;
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	1240 return determinant (info, rcond, 0);
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	1241 }
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	1242
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	1243 DET
5275 23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe] jwe parents: 5261 diff changeset	1244 SparseMatrix::determinant (octave_idx_type& info) const
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	1245 {
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	1246 double rcond;
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	1247 return determinant (info, rcond, 0);
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	1248 }
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	1249
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	1250 DET
5275 23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe] jwe parents: 5261 diff changeset	1251 SparseMatrix::determinant (octave_idx_type& err, double& rcond, int) const
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	1252 {
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	1253 DET retval;
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	1254
5203 dbeafbc0ff64 [project @ 2005-03-15 00:58:55 by jwe] jwe parents: 5164 diff changeset	1255 #ifdef HAVE_UMFPACK
5275 23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe] jwe parents: 5261 diff changeset	1256 octave_idx_type nr = rows ();
23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe] jwe parents: 5261 diff changeset	1257 octave_idx_type nc = cols ();
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	1258
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	1259 if (nr == 0 \|\| nc == 0 \|\| nr != nc)
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	1260 {
8335 64cf956a109c templatize & fix DET Jaroslav Hajek <highegg@gmail.com> parents: 8303 diff changeset	1261 retval = DET (1.0);
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	1262 }
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	1263 else
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	1264 {
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	1265 err = 0;
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	1266
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	1267 // Setup the control parameters
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	1268 Matrix Control (UMFPACK_CONTROL, 1);
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	1269 double *control = Control.fortran_vec ();
5322 22994a5730f9 [project @ 2005-04-29 13:04:24 by dbateman] dbateman parents: 5307 diff changeset	1270 UMFPACK_DNAME (defaults) (control);
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	1271
5893 d73ffe42f2c8 [project @ 2006-07-16 07:48:19 by jwe] jwe parents: 5877 diff changeset	1272 double tmp = octave_sparse_params::get_key ("spumoni");
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	1273 if (!xisnan (tmp))
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1274 Control (UMFPACK_PRL) = tmp;
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	1275
5893 d73ffe42f2c8 [project @ 2006-07-16 07:48:19 by jwe] jwe parents: 5877 diff changeset	1276 tmp = octave_sparse_params::get_key ("piv_tol");
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	1277 if (!xisnan (tmp))
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1278 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1279 Control (UMFPACK_SYM_PIVOT_TOLERANCE) = tmp;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1280 Control (UMFPACK_PIVOT_TOLERANCE) = tmp;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1281 }
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	1282
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	1283 // Set whether we are allowed to modify Q or not
5893 d73ffe42f2c8 [project @ 2006-07-16 07:48:19 by jwe] jwe parents: 5877 diff changeset	1284 tmp = octave_sparse_params::get_key ("autoamd");
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	1285 if (!xisnan (tmp))
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1286 Control (UMFPACK_FIXQ) = tmp;
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	1287
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	1288 // Turn-off UMFPACK scaling for LU
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	1289 Control (UMFPACK_SCALE) = UMFPACK_SCALE_NONE;
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	1290
5322 22994a5730f9 [project @ 2005-04-29 13:04:24 by dbateman] dbateman parents: 5307 diff changeset	1291 UMFPACK_DNAME (report_control) (control);
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	1292
5275 23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe] jwe parents: 5261 diff changeset	1293 const octave_idx_type *Ap = cidx ();
23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe] jwe parents: 5261 diff changeset	1294 const octave_idx_type *Ai = ridx ();
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	1295 const double *Ax = data ();
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	1296
5322 22994a5730f9 [project @ 2005-04-29 13:04:24 by dbateman] dbateman parents: 5307 diff changeset	1297 UMFPACK_DNAME (report_matrix) (nr, nc, Ap, Ai, Ax, 1, control);
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	1298
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	1299 void *Symbolic;
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	1300 Matrix Info (1, UMFPACK_INFO);
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	1301 double *info = Info.fortran_vec ();
5322 22994a5730f9 [project @ 2005-04-29 13:04:24 by dbateman] dbateman parents: 5307 diff changeset	1302 int status = UMFPACK_DNAME (qsymbolic) (nr, nc, Ap, Ai,
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1303 Ax, 0, &Symbolic, control, info);
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	1304
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	1305 if (status < 0)
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1306 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1307 (*current_liboctave_error_handler)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1308 ("SparseMatrix::determinant symbolic factorization failed");
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1309
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1310 UMFPACK_DNAME (report_status) (control, status);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1311 UMFPACK_DNAME (report_info) (control, info);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1312
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1313 UMFPACK_DNAME (free_symbolic) (&Symbolic) ;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1314 }
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	1315 else
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1316 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1317 UMFPACK_DNAME (report_symbolic) (Symbolic, control);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1318
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1319 void *Numeric;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1320 status = UMFPACK_DNAME (numeric) (Ap, Ai, Ax, Symbolic,
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1321 &Numeric, control, info) ;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1322 UMFPACK_DNAME (free_symbolic) (&Symbolic) ;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1323
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1324 rcond = Info (UMFPACK_RCOND);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1325
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1326 if (status < 0)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1327 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1328 (*current_liboctave_error_handler)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1329 ("SparseMatrix::determinant numeric factorization failed");
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1330
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1331 UMFPACK_DNAME (report_status) (control, status);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1332 UMFPACK_DNAME (report_info) (control, info);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1333
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1334 UMFPACK_DNAME (free_numeric) (&Numeric);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1335 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1336 else
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1337 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1338 UMFPACK_DNAME (report_numeric) (Numeric, control);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1339
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1340 double c10, e10;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1341
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1342 status = UMFPACK_DNAME (get_determinant) (&c10, &e10, Numeric, info);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1343
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1344 if (status < 0)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1345 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1346 (*current_liboctave_error_handler)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1347 ("SparseMatrix::determinant error calculating determinant");
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1348
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1349 UMFPACK_DNAME (report_status) (control, status);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1350 UMFPACK_DNAME (report_info) (control, info);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1351 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1352 else
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1353 retval = DET (c10, e10, 10);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1354
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1355 UMFPACK_DNAME (free_numeric) (&Numeric);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1356 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1357 }
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	1358 }
5203 dbeafbc0ff64 [project @ 2005-03-15 00:58:55 by jwe] jwe parents: 5164 diff changeset	1359 #else
dbeafbc0ff64 [project @ 2005-03-15 00:58:55 by jwe] jwe parents: 5164 diff changeset	1360 (*current_liboctave_error_handler) ("UMFPACK not installed");
dbeafbc0ff64 [project @ 2005-03-15 00:58:55 by jwe] jwe parents: 5164 diff changeset	1361 #endif
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	1362
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	1363 return retval;
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	1364 }
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	1365
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	1366 Matrix
5785 6b9cec830d72 [project @ 2006-05-03 19:32:46 by dbateman] dbateman parents: 5775 diff changeset	1367 SparseMatrix::dsolve (MatrixType &mattype, const Matrix& b, octave_idx_type& err,
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1368 double& rcond, solve_singularity_handler,
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1369 bool calc_cond) const
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	1370 {
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	1371 Matrix retval;
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	1372
5275 23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe] jwe parents: 5261 diff changeset	1373 octave_idx_type nr = rows ();
23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe] jwe parents: 5261 diff changeset	1374 octave_idx_type nc = cols ();
5630 512d0d11ae39 [project @ 2006-02-20 22:05:30 by dbateman] dbateman parents: 5610 diff changeset	1375 octave_idx_type nm = (nc < nr ? nc : nr);
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	1376 err = 0;
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	1377
6924 be176b7e110a [project @ 2007-09-25 19:08:19 by dbateman] dbateman parents: 6840 diff changeset	1378 if (nr != b.rows ())
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	1379 (*current_liboctave_error_handler)
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	1380 ("matrix dimension mismatch solution of linear equations");
6924 be176b7e110a [project @ 2007-09-25 19:08:19 by dbateman] dbateman parents: 6840 diff changeset	1381 else if (nr == 0 \|\| nc == 0 \|\| b.cols () == 0)
be176b7e110a [project @ 2007-09-25 19:08:19 by dbateman] dbateman parents: 6840 diff changeset	1382 retval = Matrix (nc, b.cols (), 0.0);
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	1383 else
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	1384 {
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	1385 // Print spparms("spumoni") info if requested
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	1386 int typ = mattype.type ();
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	1387 mattype.info ();
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	1388
5785 6b9cec830d72 [project @ 2006-05-03 19:32:46 by dbateman] dbateman parents: 5775 diff changeset	1389 if (typ == MatrixType::Diagonal \|\|
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1390 typ == MatrixType::Permuted_Diagonal)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1391 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1392 retval.resize (nc, b.cols(), 0.);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1393 if (typ == MatrixType::Diagonal)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1394 for (octave_idx_type j = 0; j < b.cols(); j++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1395 for (octave_idx_type i = 0; i < nm; i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1396 retval(i,j) = b(i,j) / data (i);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1397 else
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1398 for (octave_idx_type j = 0; j < b.cols(); j++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1399 for (octave_idx_type k = 0; k < nc; k++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1400 for (octave_idx_type i = cidx(k); i < cidx(k+1); i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1401 retval(k,j) = b(ridx(i),j) / data (i);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1402
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1403 if (calc_cond)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1404 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1405 double dmax = 0., dmin = octave_Inf;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1406 for (octave_idx_type i = 0; i < nm; i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1407 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1408 double tmp = fabs(data(i));
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1409 if (tmp > dmax)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1410 dmax = tmp;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1411 if (tmp < dmin)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1412 dmin = tmp;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1413 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1414 rcond = dmin / dmax;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1415 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1416 else
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1417 rcond = 1.;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1418 }
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	1419 else
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1420 (*current_liboctave_error_handler) ("incorrect matrix type");
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	1421 }
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	1422
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	1423 return retval;
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	1424 }
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	1425
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	1426 SparseMatrix
5785 6b9cec830d72 [project @ 2006-05-03 19:32:46 by dbateman] dbateman parents: 5775 diff changeset	1427 SparseMatrix::dsolve (MatrixType &mattype, const SparseMatrix& b,
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1428 octave_idx_type& err, double& rcond,
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1429 solve_singularity_handler, bool calc_cond) const
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	1430 {
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	1431 SparseMatrix retval;
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	1432
5275 23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe] jwe parents: 5261 diff changeset	1433 octave_idx_type nr = rows ();
23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe] jwe parents: 5261 diff changeset	1434 octave_idx_type nc = cols ();
5630 512d0d11ae39 [project @ 2006-02-20 22:05:30 by dbateman] dbateman parents: 5610 diff changeset	1435 octave_idx_type nm = (nc < nr ? nc : nr);
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	1436 err = 0;
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	1437
6924 be176b7e110a [project @ 2007-09-25 19:08:19 by dbateman] dbateman parents: 6840 diff changeset	1438 if (nr != b.rows ())
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	1439 (*current_liboctave_error_handler)
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	1440 ("matrix dimension mismatch solution of linear equations");
6924 be176b7e110a [project @ 2007-09-25 19:08:19 by dbateman] dbateman parents: 6840 diff changeset	1441 else if (nr == 0 \|\| nc == 0 \|\| b.cols () == 0)
be176b7e110a [project @ 2007-09-25 19:08:19 by dbateman] dbateman parents: 6840 diff changeset	1442 retval = SparseMatrix (nc, b.cols ());
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	1443 else
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	1444 {
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	1445 // Print spparms("spumoni") info if requested
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	1446 int typ = mattype.type ();
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	1447 mattype.info ();
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	1448
5785 6b9cec830d72 [project @ 2006-05-03 19:32:46 by dbateman] dbateman parents: 5775 diff changeset	1449 if (typ == MatrixType::Diagonal \|\|
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1450 typ == MatrixType::Permuted_Diagonal)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1451 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1452 octave_idx_type b_nc = b.cols ();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1453 octave_idx_type b_nz = b.nnz ();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1454 retval = SparseMatrix (nc, b_nc, b_nz);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1455
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1456 retval.xcidx(0) = 0;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1457 octave_idx_type ii = 0;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1458 if (typ == MatrixType::Diagonal)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1459 for (octave_idx_type j = 0; j < b_nc; j++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1460 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1461 for (octave_idx_type i = b.cidx(j); i < b.cidx(j+1); i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1462 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1463 if (b.ridx(i) >= nm)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1464 break;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1465 retval.xridx (ii) = b.ridx(i);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1466 retval.xdata (ii++) = b.data(i) / data (b.ridx (i));
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1467 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1468 retval.xcidx(j+1) = ii;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1469 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1470 else
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1471 for (octave_idx_type j = 0; j < b_nc; j++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1472 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1473 for (octave_idx_type l = 0; l < nc; l++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1474 for (octave_idx_type i = cidx(l); i < cidx(l+1); i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1475 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1476 bool found = false;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1477 octave_idx_type k;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1478 for (k = b.cidx(j); k < b.cidx(j+1); k++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1479 if (ridx(i) == b.ridx(k))
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1480 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1481 found = true;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1482 break;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1483 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1484 if (found)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1485 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1486 retval.xridx (ii) = l;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1487 retval.xdata (ii++) = b.data(k) / data (i);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1488 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1489 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1490 retval.xcidx(j+1) = ii;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1491 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1492
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1493 if (calc_cond)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1494 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1495 double dmax = 0., dmin = octave_Inf;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1496 for (octave_idx_type i = 0; i < nm; i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1497 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1498 double tmp = fabs(data(i));
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1499 if (tmp > dmax)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1500 dmax = tmp;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1501 if (tmp < dmin)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1502 dmin = tmp;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1503 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1504 rcond = dmin / dmax;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1505 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1506 else
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1507 rcond = 1.;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1508 }
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	1509 else
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1510 (*current_liboctave_error_handler) ("incorrect matrix type");
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	1511 }
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	1512
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	1513 return retval;
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	1514 }
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	1515
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	1516 ComplexMatrix
5785 6b9cec830d72 [project @ 2006-05-03 19:32:46 by dbateman] dbateman parents: 5775 diff changeset	1517 SparseMatrix::dsolve (MatrixType &mattype, const ComplexMatrix& b,
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1518 octave_idx_type& err, double& rcond,
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1519 solve_singularity_handler, bool calc_cond) const
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	1520 {
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	1521 ComplexMatrix retval;
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	1522
5275 23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe] jwe parents: 5261 diff changeset	1523 octave_idx_type nr = rows ();
23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe] jwe parents: 5261 diff changeset	1524 octave_idx_type nc = cols ();
5630 512d0d11ae39 [project @ 2006-02-20 22:05:30 by dbateman] dbateman parents: 5610 diff changeset	1525 octave_idx_type nm = (nc < nr ? nc : nr);
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	1526 err = 0;
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	1527
6924 be176b7e110a [project @ 2007-09-25 19:08:19 by dbateman] dbateman parents: 6840 diff changeset	1528 if (nr != b.rows ())
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	1529 (*current_liboctave_error_handler)
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	1530 ("matrix dimension mismatch solution of linear equations");
6924 be176b7e110a [project @ 2007-09-25 19:08:19 by dbateman] dbateman parents: 6840 diff changeset	1531 else if (nr == 0 \|\| nc == 0 \|\| b.cols () == 0)
be176b7e110a [project @ 2007-09-25 19:08:19 by dbateman] dbateman parents: 6840 diff changeset	1532 retval = ComplexMatrix (nc, b.cols (), Complex (0.0, 0.0));
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	1533 else
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	1534 {
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	1535 // Print spparms("spumoni") info if requested
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	1536 int typ = mattype.type ();
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	1537 mattype.info ();
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	1538
5785 6b9cec830d72 [project @ 2006-05-03 19:32:46 by dbateman] dbateman parents: 5775 diff changeset	1539 if (typ == MatrixType::Diagonal \|\|
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1540 typ == MatrixType::Permuted_Diagonal)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1541 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1542 retval.resize (nc, b.cols(), 0);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1543 if (typ == MatrixType::Diagonal)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1544 for (octave_idx_type j = 0; j < b.cols(); j++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1545 for (octave_idx_type i = 0; i < nm; i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1546 retval(i,j) = b(i,j) / data (i);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1547 else
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1548 for (octave_idx_type j = 0; j < b.cols(); j++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1549 for (octave_idx_type k = 0; k < nc; k++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1550 for (octave_idx_type i = cidx(k); i < cidx(k+1); i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1551 retval(k,j) = b(ridx(i),j) / data (i);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1552
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1553 if (calc_cond)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1554 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1555 double dmax = 0., dmin = octave_Inf;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1556 for (octave_idx_type i = 0; i < nm; i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1557 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1558 double tmp = fabs(data(i));
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1559 if (tmp > dmax)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1560 dmax = tmp;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1561 if (tmp < dmin)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1562 dmin = tmp;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1563 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1564 rcond = dmin / dmax;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1565 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1566 else
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1567 rcond = 1.;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1568 }
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	1569 else
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1570 (*current_liboctave_error_handler) ("incorrect matrix type");
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	1571 }
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	1572
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	1573 return retval;
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	1574 }
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	1575
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	1576 SparseComplexMatrix
5785 6b9cec830d72 [project @ 2006-05-03 19:32:46 by dbateman] dbateman parents: 5775 diff changeset	1577 SparseMatrix::dsolve (MatrixType &mattype, const SparseComplexMatrix& b,
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1578 octave_idx_type& err, double& rcond,
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1579 solve_singularity_handler, bool calc_cond) const
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	1580 {
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	1581 SparseComplexMatrix retval;
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	1582
5275 23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe] jwe parents: 5261 diff changeset	1583 octave_idx_type nr = rows ();
23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe] jwe parents: 5261 diff changeset	1584 octave_idx_type nc = cols ();
5630 512d0d11ae39 [project @ 2006-02-20 22:05:30 by dbateman] dbateman parents: 5610 diff changeset	1585 octave_idx_type nm = (nc < nr ? nc : nr);
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	1586 err = 0;
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	1587
6924 be176b7e110a [project @ 2007-09-25 19:08:19 by dbateman] dbateman parents: 6840 diff changeset	1588 if (nr != b.rows ())
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	1589 (*current_liboctave_error_handler)
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	1590 ("matrix dimension mismatch solution of linear equations");
6924 be176b7e110a [project @ 2007-09-25 19:08:19 by dbateman] dbateman parents: 6840 diff changeset	1591 else if (nr == 0 \|\| nc == 0 \|\| b.cols () == 0)
be176b7e110a [project @ 2007-09-25 19:08:19 by dbateman] dbateman parents: 6840 diff changeset	1592 retval = SparseComplexMatrix (nc, b.cols ());
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	1593 else
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	1594 {
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	1595 // Print spparms("spumoni") info if requested
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	1596 int typ = mattype.type ();
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	1597 mattype.info ();
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	1598
5785 6b9cec830d72 [project @ 2006-05-03 19:32:46 by dbateman] dbateman parents: 5775 diff changeset	1599 if (typ == MatrixType::Diagonal \|\|
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1600 typ == MatrixType::Permuted_Diagonal)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1601 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1602 octave_idx_type b_nc = b.cols ();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1603 octave_idx_type b_nz = b.nnz ();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1604 retval = SparseComplexMatrix (nc, b_nc, b_nz);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1605
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1606 retval.xcidx(0) = 0;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1607 octave_idx_type ii = 0;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1608 if (typ == MatrixType::Diagonal)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1609 for (octave_idx_type j = 0; j < b.cols(); j++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1610 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1611 for (octave_idx_type i = b.cidx(j); i < b.cidx(j+1); i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1612 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1613 if (b.ridx(i) >= nm)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1614 break;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1615 retval.xridx (ii) = b.ridx(i);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1616 retval.xdata (ii++) = b.data(i) / data (b.ridx (i));
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1617 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1618 retval.xcidx(j+1) = ii;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1619 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1620 else
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1621 for (octave_idx_type j = 0; j < b.cols(); j++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1622 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1623 for (octave_idx_type l = 0; l < nc; l++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1624 for (octave_idx_type i = cidx(l); i < cidx(l+1); i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1625 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1626 bool found = false;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1627 octave_idx_type k;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1628 for (k = b.cidx(j); k < b.cidx(j+1); k++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1629 if (ridx(i) == b.ridx(k))
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1630 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1631 found = true;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1632 break;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1633 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1634 if (found)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1635 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1636 retval.xridx (ii) = l;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1637 retval.xdata (ii++) = b.data(k) / data (i);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1638 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1639 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1640 retval.xcidx(j+1) = ii;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1641 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1642
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1643 if (calc_cond)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1644 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1645 double dmax = 0., dmin = octave_Inf;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1646 for (octave_idx_type i = 0; i < nm; i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1647 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1648 double tmp = fabs(data(i));
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1649 if (tmp > dmax)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1650 dmax = tmp;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1651 if (tmp < dmin)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1652 dmin = tmp;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1653 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1654 rcond = dmin / dmax;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1655 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1656 else
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1657 rcond = 1.;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1658 }
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	1659 else
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1660 (*current_liboctave_error_handler) ("incorrect matrix type");
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	1661 }
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	1662
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	1663 return retval;
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	1664 }
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	1665
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	1666 Matrix
5785 6b9cec830d72 [project @ 2006-05-03 19:32:46 by dbateman] dbateman parents: 5775 diff changeset	1667 SparseMatrix::utsolve (MatrixType &mattype, const Matrix& b,
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1668 octave_idx_type& err, double& rcond,
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1669 solve_singularity_handler sing_handler,
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1670 bool calc_cond) const
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	1671 {
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	1672 Matrix retval;
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	1673
5275 23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe] jwe parents: 5261 diff changeset	1674 octave_idx_type nr = rows ();
23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe] jwe parents: 5261 diff changeset	1675 octave_idx_type nc = cols ();
5630 512d0d11ae39 [project @ 2006-02-20 22:05:30 by dbateman] dbateman parents: 5610 diff changeset	1676 octave_idx_type nm = (nc > nr ? nc : nr);
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	1677 err = 0;
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	1678
6924 be176b7e110a [project @ 2007-09-25 19:08:19 by dbateman] dbateman parents: 6840 diff changeset	1679 if (nr != b.rows ())
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	1680 (*current_liboctave_error_handler)
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	1681 ("matrix dimension mismatch solution of linear equations");
6924 be176b7e110a [project @ 2007-09-25 19:08:19 by dbateman] dbateman parents: 6840 diff changeset	1682 else if (nr == 0 \|\| nc == 0 \|\| b.cols () == 0)
be176b7e110a [project @ 2007-09-25 19:08:19 by dbateman] dbateman parents: 6840 diff changeset	1683 retval = Matrix (nc, b.cols (), 0.0);
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	1684 else
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	1685 {
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	1686 // Print spparms("spumoni") info if requested
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	1687 int typ = mattype.type ();
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	1688 mattype.info ();
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	1689
5785 6b9cec830d72 [project @ 2006-05-03 19:32:46 by dbateman] dbateman parents: 5775 diff changeset	1690 if (typ == MatrixType::Permuted_Upper \|\|
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1691 typ == MatrixType::Upper)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1692 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1693 double anorm = 0.;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1694 double ainvnorm = 0.;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1695 octave_idx_type b_nc = b.cols ();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1696 rcond = 1.;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1697
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1698 if (calc_cond)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1699 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1700 // Calculate the 1-norm of matrix for rcond calculation
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1701 for (octave_idx_type j = 0; j < nc; j++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1702 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1703 double atmp = 0.;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1704 for (octave_idx_type i = cidx(j); i < cidx(j+1); i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1705 atmp += fabs(data(i));
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1706 if (atmp > anorm)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1707 anorm = atmp;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1708 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1709 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1710
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1711 if (typ == MatrixType::Permuted_Upper)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1712 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1713 retval.resize (nc, b_nc);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1714 octave_idx_type *perm = mattype.triangular_perm ();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1715 OCTAVE_LOCAL_BUFFER (double, work, nm);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1716
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1717 for (octave_idx_type j = 0; j < b_nc; j++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1718 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1719 for (octave_idx_type i = 0; i < nr; i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1720 work[i] = b(i,j);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1721 for (octave_idx_type i = nr; i < nc; i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1722 work[i] = 0.;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1723
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1724 for (octave_idx_type k = nc-1; k >= 0; k--)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1725 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1726 octave_idx_type kidx = perm[k];
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1727
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1728 if (work[k] != 0.)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1729 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1730 if (ridx(cidx(kidx+1)-1) != k \|\|
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1731 data(cidx(kidx+1)-1) == 0.)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1732 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1733 err = -2;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1734 goto triangular_error;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1735 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1736
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1737 double tmp = work[k] / data(cidx(kidx+1)-1);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1738 work[k] = tmp;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1739 for (octave_idx_type i = cidx(kidx);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1740 i < cidx(kidx+1)-1; i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1741 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1742 octave_idx_type iidx = ridx(i);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1743 work[iidx] = work[iidx] - tmp * data(i);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1744 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1745 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1746 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1747
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1748 for (octave_idx_type i = 0; i < nc; i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1749 retval.xelem (perm[i], j) = work[i];
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1750 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1751
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1752 if (calc_cond)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1753 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1754 // Calculation of 1-norm of inv(*this)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1755 for (octave_idx_type i = 0; i < nm; i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1756 work[i] = 0.;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1757
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1758 for (octave_idx_type j = 0; j < nr; j++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1759 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1760 work[j] = 1.;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1761
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1762 for (octave_idx_type k = j; k >= 0; k--)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1763 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1764 octave_idx_type iidx = perm[k];
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1765
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1766 if (work[k] != 0.)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1767 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1768 double tmp = work[k] / data(cidx(iidx+1)-1);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1769 work[k] = tmp;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1770 for (octave_idx_type i = cidx(iidx);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1771 i < cidx(iidx+1)-1; i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1772 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1773 octave_idx_type idx2 = ridx(i);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1774 work[idx2] = work[idx2] - tmp * data(i);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1775 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1776 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1777 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1778 double atmp = 0;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1779 for (octave_idx_type i = 0; i < j+1; i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1780 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1781 atmp += fabs(work[i]);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1782 work[i] = 0.;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1783 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1784 if (atmp > ainvnorm)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1785 ainvnorm = atmp;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1786 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1787 rcond = 1. / ainvnorm / anorm;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1788 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1789 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1790 else
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1791 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1792 OCTAVE_LOCAL_BUFFER (double, work, nm);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1793 retval.resize (nc, b_nc);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1794
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1795 for (octave_idx_type j = 0; j < b_nc; j++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1796 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1797 for (octave_idx_type i = 0; i < nr; i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1798 work[i] = b(i,j);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1799 for (octave_idx_type i = nr; i < nc; i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1800 work[i] = 0.;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1801
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1802 for (octave_idx_type k = nc-1; k >= 0; k--)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1803 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1804 if (work[k] != 0.)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1805 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1806 if (ridx(cidx(k+1)-1) != k \|\|
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1807 data(cidx(k+1)-1) == 0.)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1808 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1809 err = -2;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1810 goto triangular_error;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1811 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1812
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1813 double tmp = work[k] / data(cidx(k+1)-1);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1814 work[k] = tmp;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1815 for (octave_idx_type i = cidx(k); i < cidx(k+1)-1; i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1816 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1817 octave_idx_type iidx = ridx(i);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1818 work[iidx] = work[iidx] - tmp * data(i);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1819 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1820 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1821 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1822
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1823 for (octave_idx_type i = 0; i < nc; i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1824 retval.xelem (i, j) = work[i];
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1825 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1826
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1827 if (calc_cond)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1828 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1829 // Calculation of 1-norm of inv(*this)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1830 for (octave_idx_type i = 0; i < nm; i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1831 work[i] = 0.;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1832
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1833 for (octave_idx_type j = 0; j < nr; j++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1834 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1835 work[j] = 1.;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1836
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1837 for (octave_idx_type k = j; k >= 0; k--)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1838 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1839 if (work[k] != 0.)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1840 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1841 double tmp = work[k] / data(cidx(k+1)-1);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1842 work[k] = tmp;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1843 for (octave_idx_type i = cidx(k); i < cidx(k+1)-1; i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1844 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1845 octave_idx_type iidx = ridx(i);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1846 work[iidx] = work[iidx] - tmp * data(i);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1847 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1848 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1849 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1850 double atmp = 0;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1851 for (octave_idx_type i = 0; i < j+1; i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1852 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1853 atmp += fabs(work[i]);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1854 work[i] = 0.;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1855 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1856 if (atmp > ainvnorm)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1857 ainvnorm = atmp;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1858 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1859 rcond = 1. / ainvnorm / anorm;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1860 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1861 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1862
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1863 triangular_error:
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1864 if (err != 0)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1865 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1866 if (sing_handler)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1867 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1868 sing_handler (rcond);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1869 mattype.mark_as_rectangular ();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1870 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1871 else
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1872 (*current_liboctave_error_handler)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1873 ("SparseMatrix::solve matrix singular to machine precision, rcond = %g",
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1874 rcond);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1875 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1876
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1877 volatile double rcond_plus_one = rcond + 1.0;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1878
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1879 if (rcond_plus_one == 1.0 \|\| xisnan (rcond))
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1880 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1881 err = -2;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1882
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1883 if (sing_handler)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1884 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1885 sing_handler (rcond);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1886 mattype.mark_as_rectangular ();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1887 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1888 else
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1889 (*current_liboctave_error_handler)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1890 ("matrix singular to machine precision, rcond = %g",
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1891 rcond);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1892 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1893 }
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	1894 else
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1895 (*current_liboctave_error_handler) ("incorrect matrix type");
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	1896 }
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	1897
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	1898 return retval;
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	1899 }
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	1900
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	1901 SparseMatrix
5785 6b9cec830d72 [project @ 2006-05-03 19:32:46 by dbateman] dbateman parents: 5775 diff changeset	1902 SparseMatrix::utsolve (MatrixType &mattype, const SparseMatrix& b,
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1903 octave_idx_type& err, double& rcond,
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1904 solve_singularity_handler sing_handler,
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1905 bool calc_cond) const
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	1906 {
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	1907 SparseMatrix retval;
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	1908
5275 23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe] jwe parents: 5261 diff changeset	1909 octave_idx_type nr = rows ();
23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe] jwe parents: 5261 diff changeset	1910 octave_idx_type nc = cols ();
5630 512d0d11ae39 [project @ 2006-02-20 22:05:30 by dbateman] dbateman parents: 5610 diff changeset	1911 octave_idx_type nm = (nc > nr ? nc : nr);
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	1912 err = 0;
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	1913
6924 be176b7e110a [project @ 2007-09-25 19:08:19 by dbateman] dbateman parents: 6840 diff changeset	1914 if (nr != b.rows ())
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	1915 (*current_liboctave_error_handler)
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	1916 ("matrix dimension mismatch solution of linear equations");
6924 be176b7e110a [project @ 2007-09-25 19:08:19 by dbateman] dbateman parents: 6840 diff changeset	1917 else if (nr == 0 \|\| nc == 0 \|\| b.cols () == 0)
be176b7e110a [project @ 2007-09-25 19:08:19 by dbateman] dbateman parents: 6840 diff changeset	1918 retval = SparseMatrix (nc, b.cols ());
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	1919 else
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	1920 {
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	1921 // Print spparms("spumoni") info if requested
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	1922 int typ = mattype.type ();
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	1923 mattype.info ();
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	1924
5785 6b9cec830d72 [project @ 2006-05-03 19:32:46 by dbateman] dbateman parents: 5775 diff changeset	1925 if (typ == MatrixType::Permuted_Upper \|\|
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1926 typ == MatrixType::Upper)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1927 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1928 double anorm = 0.;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1929 double ainvnorm = 0.;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1930 rcond = 1.;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1931
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1932 if (calc_cond)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1933 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1934 // Calculate the 1-norm of matrix for rcond calculation
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1935 for (octave_idx_type j = 0; j < nc; j++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1936 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1937 double atmp = 0.;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1938 for (octave_idx_type i = cidx(j); i < cidx(j+1); i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1939 atmp += fabs(data(i));
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1940 if (atmp > anorm)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1941 anorm = atmp;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1942 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1943 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1944
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1945 octave_idx_type b_nc = b.cols ();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1946 octave_idx_type b_nz = b.nnz ();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1947 retval = SparseMatrix (nc, b_nc, b_nz);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1948 retval.xcidx(0) = 0;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1949 octave_idx_type ii = 0;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1950 octave_idx_type x_nz = b_nz;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1951
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1952 if (typ == MatrixType::Permuted_Upper)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1953 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1954 octave_idx_type *perm = mattype.triangular_perm ();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1955 OCTAVE_LOCAL_BUFFER (double, work, nm);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1956
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1957 OCTAVE_LOCAL_BUFFER (octave_idx_type, rperm, nc);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1958 for (octave_idx_type i = 0; i < nc; i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1959 rperm[perm[i]] = i;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1960
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1961 for (octave_idx_type j = 0; j < b_nc; j++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1962 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1963 for (octave_idx_type i = 0; i < nm; i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1964 work[i] = 0.;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1965 for (octave_idx_type i = b.cidx(j); i < b.cidx(j+1); i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1966 work[b.ridx(i)] = b.data(i);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1967
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1968 for (octave_idx_type k = nc-1; k >= 0; k--)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1969 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1970 octave_idx_type kidx = perm[k];
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1971
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1972 if (work[k] != 0.)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1973 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1974 if (ridx(cidx(kidx+1)-1) != k \|\|
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1975 data(cidx(kidx+1)-1) == 0.)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1976 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1977 err = -2;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1978 goto triangular_error;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1979 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1980
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1981 double tmp = work[k] / data(cidx(kidx+1)-1);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1982 work[k] = tmp;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1983 for (octave_idx_type i = cidx(kidx);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1984 i < cidx(kidx+1)-1; i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1985 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1986 octave_idx_type iidx = ridx(i);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1987 work[iidx] = work[iidx] - tmp * data(i);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1988 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1989 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1990 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1991
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1992 // Count non-zeros in work vector and adjust space in
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1993 // retval if needed
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1994 octave_idx_type new_nnz = 0;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1995 for (octave_idx_type i = 0; i < nc; i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1996 if (work[i] != 0.)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1997 new_nnz++;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1998
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	1999 if (ii + new_nnz > x_nz)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2000 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2001 // Resize the sparse matrix
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2002 octave_idx_type sz = new_nnz * (b_nc - j) + x_nz;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2003 retval.change_capacity (sz);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2004 x_nz = sz;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2005 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2006
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2007 for (octave_idx_type i = 0; i < nc; i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2008 if (work[rperm[i]] != 0.)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2009 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2010 retval.xridx(ii) = i;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2011 retval.xdata(ii++) = work[rperm[i]];
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2012 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2013 retval.xcidx(j+1) = ii;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2014 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2015
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2016 retval.maybe_compress ();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2017
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2018 if (calc_cond)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2019 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2020 // Calculation of 1-norm of inv(*this)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2021 for (octave_idx_type i = 0; i < nm; i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2022 work[i] = 0.;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2023
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2024 for (octave_idx_type j = 0; j < nr; j++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2025 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2026 work[j] = 1.;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2027
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2028 for (octave_idx_type k = j; k >= 0; k--)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2029 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2030 octave_idx_type iidx = perm[k];
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2031
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2032 if (work[k] != 0.)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2033 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2034 double tmp = work[k] / data(cidx(iidx+1)-1);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2035 work[k] = tmp;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2036 for (octave_idx_type i = cidx(iidx);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2037 i < cidx(iidx+1)-1; i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2038 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2039 octave_idx_type idx2 = ridx(i);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2040 work[idx2] = work[idx2] - tmp * data(i);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2041 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2042 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2043 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2044 double atmp = 0;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2045 for (octave_idx_type i = 0; i < j+1; i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2046 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2047 atmp += fabs(work[i]);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2048 work[i] = 0.;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2049 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2050 if (atmp > ainvnorm)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2051 ainvnorm = atmp;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2052 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2053 rcond = 1. / ainvnorm / anorm;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2054 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2055 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2056 else
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2057 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2058 OCTAVE_LOCAL_BUFFER (double, work, nm);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2059
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2060 for (octave_idx_type j = 0; j < b_nc; j++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2061 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2062 for (octave_idx_type i = 0; i < nm; i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2063 work[i] = 0.;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2064 for (octave_idx_type i = b.cidx(j); i < b.cidx(j+1); i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2065 work[b.ridx(i)] = b.data(i);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2066
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2067 for (octave_idx_type k = nc-1; k >= 0; k--)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2068 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2069 if (work[k] != 0.)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2070 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2071 if (ridx(cidx(k+1)-1) != k \|\|
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2072 data(cidx(k+1)-1) == 0.)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2073 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2074 err = -2;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2075 goto triangular_error;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2076 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2077
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2078 double tmp = work[k] / data(cidx(k+1)-1);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2079 work[k] = tmp;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2080 for (octave_idx_type i = cidx(k); i < cidx(k+1)-1; i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2081 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2082 octave_idx_type iidx = ridx(i);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2083 work[iidx] = work[iidx] - tmp * data(i);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2084 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2085 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2086 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2087
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2088 // Count non-zeros in work vector and adjust space in
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2089 // retval if needed
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2090 octave_idx_type new_nnz = 0;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2091 for (octave_idx_type i = 0; i < nc; i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2092 if (work[i] != 0.)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2093 new_nnz++;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2094
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2095 if (ii + new_nnz > x_nz)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2096 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2097 // Resize the sparse matrix
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2098 octave_idx_type sz = new_nnz * (b_nc - j) + x_nz;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2099 retval.change_capacity (sz);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2100 x_nz = sz;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2101 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2102
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2103 for (octave_idx_type i = 0; i < nc; i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2104 if (work[i] != 0.)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2105 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2106 retval.xridx(ii) = i;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2107 retval.xdata(ii++) = work[i];
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2108 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2109 retval.xcidx(j+1) = ii;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2110 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2111
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2112 retval.maybe_compress ();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2113
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2114 if (calc_cond)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2115 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2116 // Calculation of 1-norm of inv(*this)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2117 for (octave_idx_type i = 0; i < nm; i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2118 work[i] = 0.;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2119
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2120 for (octave_idx_type j = 0; j < nr; j++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2121 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2122 work[j] = 1.;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2123
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2124 for (octave_idx_type k = j; k >= 0; k--)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2125 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2126 if (work[k] != 0.)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2127 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2128 double tmp = work[k] / data(cidx(k+1)-1);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2129 work[k] = tmp;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2130 for (octave_idx_type i = cidx(k);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2131 i < cidx(k+1)-1; i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2132 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2133 octave_idx_type iidx = ridx(i);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2134 work[iidx] = work[iidx] - tmp * data(i);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2135 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2136 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2137 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2138 double atmp = 0;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2139 for (octave_idx_type i = 0; i < j+1; i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2140 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2141 atmp += fabs(work[i]);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2142 work[i] = 0.;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2143 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2144 if (atmp > ainvnorm)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2145 ainvnorm = atmp;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2146 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2147 rcond = 1. / ainvnorm / anorm;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2148 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2149 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2150
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2151 triangular_error:
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2152 if (err != 0)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2153 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2154 if (sing_handler)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2155 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2156 sing_handler (rcond);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2157 mattype.mark_as_rectangular ();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2158 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2159 else
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2160 (*current_liboctave_error_handler)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2161 ("SparseMatrix::solve matrix singular to machine precision, rcond = %g",
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2162 rcond);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2163 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2164
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2165 volatile double rcond_plus_one = rcond + 1.0;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2166
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2167 if (rcond_plus_one == 1.0 \|\| xisnan (rcond))
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2168 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2169 err = -2;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2170
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2171 if (sing_handler)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2172 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2173 sing_handler (rcond);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2174 mattype.mark_as_rectangular ();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2175 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2176 else
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2177 (*current_liboctave_error_handler)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2178 ("matrix singular to machine precision, rcond = %g",
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2179 rcond);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2180 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2181 }
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	2182 else
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2183 (*current_liboctave_error_handler) ("incorrect matrix type");
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	2184 }
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	2185 return retval;
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	2186 }
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	2187
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	2188 ComplexMatrix
5785 6b9cec830d72 [project @ 2006-05-03 19:32:46 by dbateman] dbateman parents: 5775 diff changeset	2189 SparseMatrix::utsolve (MatrixType &mattype, const ComplexMatrix& b,
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2190 octave_idx_type& err, double& rcond,
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2191 solve_singularity_handler sing_handler,
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2192 bool calc_cond) const
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	2193 {
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	2194 ComplexMatrix retval;
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	2195
5275 23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe] jwe parents: 5261 diff changeset	2196 octave_idx_type nr = rows ();
23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe] jwe parents: 5261 diff changeset	2197 octave_idx_type nc = cols ();
5630 512d0d11ae39 [project @ 2006-02-20 22:05:30 by dbateman] dbateman parents: 5610 diff changeset	2198 octave_idx_type nm = (nc > nr ? nc : nr);
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	2199 err = 0;
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	2200
6924 be176b7e110a [project @ 2007-09-25 19:08:19 by dbateman] dbateman parents: 6840 diff changeset	2201 if (nr != b.rows ())
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	2202 (*current_liboctave_error_handler)
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	2203 ("matrix dimension mismatch solution of linear equations");
6924 be176b7e110a [project @ 2007-09-25 19:08:19 by dbateman] dbateman parents: 6840 diff changeset	2204 else if (nr == 0 \|\| nc == 0 \|\| b.cols () == 0)
be176b7e110a [project @ 2007-09-25 19:08:19 by dbateman] dbateman parents: 6840 diff changeset	2205 retval = ComplexMatrix (nc, b.cols (), Complex (0.0, 0.0));
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	2206 else
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	2207 {
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	2208 // Print spparms("spumoni") info if requested
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	2209 int typ = mattype.type ();
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	2210 mattype.info ();
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	2211
5785 6b9cec830d72 [project @ 2006-05-03 19:32:46 by dbateman] dbateman parents: 5775 diff changeset	2212 if (typ == MatrixType::Permuted_Upper \|\|
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2213 typ == MatrixType::Upper)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2214 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2215 double anorm = 0.;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2216 double ainvnorm = 0.;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2217 octave_idx_type b_nc = b.cols ();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2218 rcond = 1.;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2219
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2220 if (calc_cond)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2221 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2222 // Calculate the 1-norm of matrix for rcond calculation
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2223 for (octave_idx_type j = 0; j < nc; j++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2224 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2225 double atmp = 0.;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2226 for (octave_idx_type i = cidx(j); i < cidx(j+1); i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2227 atmp += fabs(data(i));
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2228 if (atmp > anorm)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2229 anorm = atmp;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2230 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2231 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2232
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2233 if (typ == MatrixType::Permuted_Upper)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2234 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2235 retval.resize (nc, b_nc);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2236 octave_idx_type *perm = mattype.triangular_perm ();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2237 OCTAVE_LOCAL_BUFFER (Complex, cwork, nm);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2238
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2239 for (octave_idx_type j = 0; j < b_nc; j++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2240 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2241 for (octave_idx_type i = 0; i < nr; i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2242 cwork[i] = b(i,j);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2243 for (octave_idx_type i = nr; i < nc; i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2244 cwork[i] = 0.;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2245
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2246 for (octave_idx_type k = nc-1; k >= 0; k--)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2247 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2248 octave_idx_type kidx = perm[k];
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2249
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2250 if (cwork[k] != 0.)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2251 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2252 if (ridx(cidx(kidx+1)-1) != k \|\|
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2253 data(cidx(kidx+1)-1) == 0.)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2254 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2255 err = -2;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2256 goto triangular_error;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2257 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2258
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2259 Complex tmp = cwork[k] / data(cidx(kidx+1)-1);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2260 cwork[k] = tmp;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2261 for (octave_idx_type i = cidx(kidx);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2262 i < cidx(kidx+1)-1; i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2263 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2264 octave_idx_type iidx = ridx(i);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2265 cwork[iidx] = cwork[iidx] - tmp * data(i);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2266 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2267 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2268 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2269
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2270 for (octave_idx_type i = 0; i < nc; i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2271 retval.xelem (perm[i], j) = cwork[i];
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2272 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2273
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2274 if (calc_cond)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2275 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2276 // Calculation of 1-norm of inv(*this)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2277 OCTAVE_LOCAL_BUFFER (double, work, nm);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2278 for (octave_idx_type i = 0; i < nm; i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2279 work[i] = 0.;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2280
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2281 for (octave_idx_type j = 0; j < nr; j++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2282 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2283 work[j] = 1.;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2284
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2285 for (octave_idx_type k = j; k >= 0; k--)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2286 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2287 octave_idx_type iidx = perm[k];
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2288
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2289 if (work[k] != 0.)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2290 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2291 double tmp = work[k] / data(cidx(iidx+1)-1);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2292 work[k] = tmp;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2293 for (octave_idx_type i = cidx(iidx);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2294 i < cidx(iidx+1)-1; i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2295 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2296 octave_idx_type idx2 = ridx(i);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2297 work[idx2] = work[idx2] - tmp * data(i);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2298 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2299 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2300 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2301 double atmp = 0;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2302 for (octave_idx_type i = 0; i < j+1; i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2303 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2304 atmp += fabs(work[i]);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2305 work[i] = 0.;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2306 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2307 if (atmp > ainvnorm)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2308 ainvnorm = atmp;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2309 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2310 rcond = 1. / ainvnorm / anorm;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2311 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2312 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2313 else
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2314 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2315 OCTAVE_LOCAL_BUFFER (Complex, cwork, nm);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2316 retval.resize (nc, b_nc);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2317
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2318 for (octave_idx_type j = 0; j < b_nc; j++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2319 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2320 for (octave_idx_type i = 0; i < nr; i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2321 cwork[i] = b(i,j);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2322 for (octave_idx_type i = nr; i < nc; i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2323 cwork[i] = 0.;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2324
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2325 for (octave_idx_type k = nc-1; k >= 0; k--)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2326 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2327 if (cwork[k] != 0.)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2328 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2329 if (ridx(cidx(k+1)-1) != k \|\|
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2330 data(cidx(k+1)-1) == 0.)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2331 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2332 err = -2;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2333 goto triangular_error;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2334 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2335
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2336 Complex tmp = cwork[k] / data(cidx(k+1)-1);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2337 cwork[k] = tmp;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2338 for (octave_idx_type i = cidx(k); i < cidx(k+1)-1; i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2339 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2340 octave_idx_type iidx = ridx(i);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2341 cwork[iidx] = cwork[iidx] - tmp * data(i);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2342 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2343 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2344 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2345
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2346 for (octave_idx_type i = 0; i < nc; i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2347 retval.xelem (i, j) = cwork[i];
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2348 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2349
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2350 if (calc_cond)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2351 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2352 // Calculation of 1-norm of inv(*this)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2353 OCTAVE_LOCAL_BUFFER (double, work, nm);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2354 for (octave_idx_type i = 0; i < nm; i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2355 work[i] = 0.;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2356
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2357 for (octave_idx_type j = 0; j < nr; j++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2358 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2359 work[j] = 1.;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2360
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2361 for (octave_idx_type k = j; k >= 0; k--)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2362 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2363 if (work[k] != 0.)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2364 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2365 double tmp = work[k] / data(cidx(k+1)-1);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2366 work[k] = tmp;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2367 for (octave_idx_type i = cidx(k);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2368 i < cidx(k+1)-1; i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2369 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2370 octave_idx_type iidx = ridx(i);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2371 work[iidx] = work[iidx] - tmp * data(i);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2372 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2373 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2374 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2375 double atmp = 0;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2376 for (octave_idx_type i = 0; i < j+1; i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2377 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2378 atmp += fabs(work[i]);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2379 work[i] = 0.;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2380 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2381 if (atmp > ainvnorm)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2382 ainvnorm = atmp;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2383 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2384 rcond = 1. / ainvnorm / anorm;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2385 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2386 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2387
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2388 triangular_error:
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2389 if (err != 0)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2390 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2391 if (sing_handler)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2392 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2393 sing_handler (rcond);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2394 mattype.mark_as_rectangular ();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2395 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2396 else
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2397 (*current_liboctave_error_handler)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2398 ("SparseMatrix::solve matrix singular to machine precision, rcond = %g",
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2399 rcond);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2400 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2401
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2402 volatile double rcond_plus_one = rcond + 1.0;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2403
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2404 if (rcond_plus_one == 1.0 \|\| xisnan (rcond))
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2405 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2406 err = -2;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2407
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2408 if (sing_handler)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2409 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2410 sing_handler (rcond);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2411 mattype.mark_as_rectangular ();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2412 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2413 else
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2414 (*current_liboctave_error_handler)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2415 ("matrix singular to machine precision, rcond = %g",
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2416 rcond);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2417 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2418 }
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	2419 else
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2420 (*current_liboctave_error_handler) ("incorrect matrix type");
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	2421 }
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	2422
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	2423 return retval;
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	2424 }
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	2425
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	2426 SparseComplexMatrix
5785 6b9cec830d72 [project @ 2006-05-03 19:32:46 by dbateman] dbateman parents: 5775 diff changeset	2427 SparseMatrix::utsolve (MatrixType &mattype, const SparseComplexMatrix& b,
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2428 octave_idx_type& err, double& rcond,
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2429 solve_singularity_handler sing_handler,
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2430 bool calc_cond) const
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	2431 {
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	2432 SparseComplexMatrix retval;
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	2433
5275 23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe] jwe parents: 5261 diff changeset	2434 octave_idx_type nr = rows ();
23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe] jwe parents: 5261 diff changeset	2435 octave_idx_type nc = cols ();
5630 512d0d11ae39 [project @ 2006-02-20 22:05:30 by dbateman] dbateman parents: 5610 diff changeset	2436 octave_idx_type nm = (nc > nr ? nc : nr);
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	2437 err = 0;
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	2438
6924 be176b7e110a [project @ 2007-09-25 19:08:19 by dbateman] dbateman parents: 6840 diff changeset	2439 if (nr != b.rows ())
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	2440 (*current_liboctave_error_handler)
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	2441 ("matrix dimension mismatch solution of linear equations");
6924 be176b7e110a [project @ 2007-09-25 19:08:19 by dbateman] dbateman parents: 6840 diff changeset	2442 else if (nr == 0 \|\| nc == 0 \|\| b.cols () == 0)
be176b7e110a [project @ 2007-09-25 19:08:19 by dbateman] dbateman parents: 6840 diff changeset	2443 retval = SparseComplexMatrix (nc, b.cols ());
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	2444 else
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	2445 {
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	2446 // Print spparms("spumoni") info if requested
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	2447 int typ = mattype.type ();
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	2448 mattype.info ();
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	2449
5785 6b9cec830d72 [project @ 2006-05-03 19:32:46 by dbateman] dbateman parents: 5775 diff changeset	2450 if (typ == MatrixType::Permuted_Upper \|\|
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2451 typ == MatrixType::Upper)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2452 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2453 double anorm = 0.;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2454 double ainvnorm = 0.;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2455 rcond = 1.;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2456
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2457 if (calc_cond)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2458 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2459 // Calculate the 1-norm of matrix for rcond calculation
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2460 for (octave_idx_type j = 0; j < nc; j++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2461 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2462 double atmp = 0.;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2463 for (octave_idx_type i = cidx(j); i < cidx(j+1); i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2464 atmp += fabs(data(i));
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2465 if (atmp > anorm)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2466 anorm = atmp;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2467 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2468 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2469
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2470 octave_idx_type b_nc = b.cols ();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2471 octave_idx_type b_nz = b.nnz ();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2472 retval = SparseComplexMatrix (nc, b_nc, b_nz);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2473 retval.xcidx(0) = 0;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2474 octave_idx_type ii = 0;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2475 octave_idx_type x_nz = b_nz;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2476
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2477 if (typ == MatrixType::Permuted_Upper)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2478 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2479 octave_idx_type *perm = mattype.triangular_perm ();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2480 OCTAVE_LOCAL_BUFFER (Complex, cwork, nm);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2481
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2482 OCTAVE_LOCAL_BUFFER (octave_idx_type, rperm, nc);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2483 for (octave_idx_type i = 0; i < nc; i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2484 rperm[perm[i]] = i;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2485
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2486 for (octave_idx_type j = 0; j < b_nc; j++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2487 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2488 for (octave_idx_type i = 0; i < nm; i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2489 cwork[i] = 0.;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2490 for (octave_idx_type i = b.cidx(j); i < b.cidx(j+1); i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2491 cwork[b.ridx(i)] = b.data(i);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2492
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2493 for (octave_idx_type k = nc-1; k >= 0; k--)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2494 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2495 octave_idx_type kidx = perm[k];
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2496
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2497 if (cwork[k] != 0.)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2498 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2499 if (ridx(cidx(kidx+1)-1) != k \|\|
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2500 data(cidx(kidx+1)-1) == 0.)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2501 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2502 err = -2;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2503 goto triangular_error;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2504 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2505
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2506 Complex tmp = cwork[k] / data(cidx(kidx+1)-1);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2507 cwork[k] = tmp;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2508 for (octave_idx_type i = cidx(kidx);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2509 i < cidx(kidx+1)-1; i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2510 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2511 octave_idx_type iidx = ridx(i);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2512 cwork[iidx] = cwork[iidx] - tmp * data(i);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2513 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2514 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2515 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2516
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2517 // Count non-zeros in work vector and adjust space in
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2518 // retval if needed
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2519 octave_idx_type new_nnz = 0;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2520 for (octave_idx_type i = 0; i < nc; i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2521 if (cwork[i] != 0.)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2522 new_nnz++;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2523
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2524 if (ii + new_nnz > x_nz)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2525 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2526 // Resize the sparse matrix
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2527 octave_idx_type sz = new_nnz * (b_nc - j) + x_nz;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2528 retval.change_capacity (sz);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2529 x_nz = sz;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2530 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2531
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2532 for (octave_idx_type i = 0; i < nc; i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2533 if (cwork[rperm[i]] != 0.)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2534 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2535 retval.xridx(ii) = i;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2536 retval.xdata(ii++) = cwork[rperm[i]];
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2537 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2538 retval.xcidx(j+1) = ii;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2539 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2540
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2541 retval.maybe_compress ();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2542
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2543 if (calc_cond)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2544 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2545 // Calculation of 1-norm of inv(*this)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2546 OCTAVE_LOCAL_BUFFER (double, work, nm);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2547 for (octave_idx_type i = 0; i < nm; i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2548 work[i] = 0.;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2549
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2550 for (octave_idx_type j = 0; j < nr; j++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2551 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2552 work[j] = 1.;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2553
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2554 for (octave_idx_type k = j; k >= 0; k--)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2555 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2556 octave_idx_type iidx = perm[k];
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2557
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2558 if (work[k] != 0.)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2559 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2560 double tmp = work[k] / data(cidx(iidx+1)-1);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2561 work[k] = tmp;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2562 for (octave_idx_type i = cidx(iidx);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2563 i < cidx(iidx+1)-1; i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2564 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2565 octave_idx_type idx2 = ridx(i);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2566 work[idx2] = work[idx2] - tmp * data(i);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2567 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2568 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2569 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2570 double atmp = 0;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2571 for (octave_idx_type i = 0; i < j+1; i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2572 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2573 atmp += fabs(work[i]);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2574 work[i] = 0.;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2575 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2576 if (atmp > ainvnorm)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2577 ainvnorm = atmp;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2578 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2579 rcond = 1. / ainvnorm / anorm;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2580 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2581 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2582 else
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2583 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2584 OCTAVE_LOCAL_BUFFER (Complex, cwork, nm);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2585
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2586 for (octave_idx_type j = 0; j < b_nc; j++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2587 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2588 for (octave_idx_type i = 0; i < nm; i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2589 cwork[i] = 0.;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2590 for (octave_idx_type i = b.cidx(j); i < b.cidx(j+1); i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2591 cwork[b.ridx(i)] = b.data(i);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2592
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2593 for (octave_idx_type k = nc-1; k >= 0; k--)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2594 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2595 if (cwork[k] != 0.)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2596 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2597 if (ridx(cidx(k+1)-1) != k \|\|
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2598 data(cidx(k+1)-1) == 0.)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2599 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2600 err = -2;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2601 goto triangular_error;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2602 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2603
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2604 Complex tmp = cwork[k] / data(cidx(k+1)-1);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2605 cwork[k] = tmp;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2606 for (octave_idx_type i = cidx(k); i < cidx(k+1)-1; i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2607 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2608 octave_idx_type iidx = ridx(i);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2609 cwork[iidx] = cwork[iidx] - tmp * data(i);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2610 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2611 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2612 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2613
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2614 // Count non-zeros in work vector and adjust space in
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2615 // retval if needed
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2616 octave_idx_type new_nnz = 0;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2617 for (octave_idx_type i = 0; i < nc; i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2618 if (cwork[i] != 0.)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2619 new_nnz++;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2620
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2621 if (ii + new_nnz > x_nz)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2622 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2623 // Resize the sparse matrix
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2624 octave_idx_type sz = new_nnz * (b_nc - j) + x_nz;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2625 retval.change_capacity (sz);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2626 x_nz = sz;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2627 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2628
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2629 for (octave_idx_type i = 0; i < nc; i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2630 if (cwork[i] != 0.)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2631 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2632 retval.xridx(ii) = i;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2633 retval.xdata(ii++) = cwork[i];
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2634 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2635 retval.xcidx(j+1) = ii;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2636 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2637
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2638 retval.maybe_compress ();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2639
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2640 if (calc_cond)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2641 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2642 // Calculation of 1-norm of inv(*this)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2643 OCTAVE_LOCAL_BUFFER (double, work, nm);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2644 for (octave_idx_type i = 0; i < nm; i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2645 work[i] = 0.;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2646
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2647 for (octave_idx_type j = 0; j < nr; j++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2648 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2649 work[j] = 1.;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2650
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2651 for (octave_idx_type k = j; k >= 0; k--)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2652 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2653 if (work[k] != 0.)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2654 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2655 double tmp = work[k] / data(cidx(k+1)-1);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2656 work[k] = tmp;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2657 for (octave_idx_type i = cidx(k);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2658 i < cidx(k+1)-1; i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2659 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2660 octave_idx_type iidx = ridx(i);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2661 work[iidx] = work[iidx] - tmp * data(i);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2662 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2663 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2664 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2665 double atmp = 0;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2666 for (octave_idx_type i = 0; i < j+1; i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2667 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2668 atmp += fabs(work[i]);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2669 work[i] = 0.;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2670 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2671 if (atmp > ainvnorm)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2672 ainvnorm = atmp;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2673 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2674 rcond = 1. / ainvnorm / anorm;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2675 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2676 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2677
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2678 triangular_error:
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2679 if (err != 0)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2680 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2681 if (sing_handler)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2682 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2683 sing_handler (rcond);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2684 mattype.mark_as_rectangular ();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2685 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2686 else
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2687 (*current_liboctave_error_handler)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2688 ("SparseMatrix::solve matrix singular to machine precision, rcond = %g",
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2689 rcond);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2690 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2691
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2692 volatile double rcond_plus_one = rcond + 1.0;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2693
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2694 if (rcond_plus_one == 1.0 \|\| xisnan (rcond))
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2695 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2696 err = -2;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2697
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2698 if (sing_handler)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2699 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2700 sing_handler (rcond);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2701 mattype.mark_as_rectangular ();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2702 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2703 else
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2704 (*current_liboctave_error_handler)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2705 ("matrix singular to machine precision, rcond = %g",
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2706 rcond);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2707 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2708 }
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	2709 else
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2710 (*current_liboctave_error_handler) ("incorrect matrix type");
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	2711 }
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	2712
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	2713 return retval;
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	2714 }
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	2715
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	2716 Matrix
5785 6b9cec830d72 [project @ 2006-05-03 19:32:46 by dbateman] dbateman parents: 5775 diff changeset	2717 SparseMatrix::ltsolve (MatrixType &mattype, const Matrix& b,
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2718 octave_idx_type& err, double& rcond,
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2719 solve_singularity_handler sing_handler,
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2720 bool calc_cond) const
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	2721 {
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	2722 Matrix retval;
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	2723
5275 23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe] jwe parents: 5261 diff changeset	2724 octave_idx_type nr = rows ();
23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe] jwe parents: 5261 diff changeset	2725 octave_idx_type nc = cols ();
5630 512d0d11ae39 [project @ 2006-02-20 22:05:30 by dbateman] dbateman parents: 5610 diff changeset	2726 octave_idx_type nm = (nc > nr ? nc : nr);
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	2727 err = 0;
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	2728
6924 be176b7e110a [project @ 2007-09-25 19:08:19 by dbateman] dbateman parents: 6840 diff changeset	2729 if (nr != b.rows ())
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	2730 (*current_liboctave_error_handler)
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	2731 ("matrix dimension mismatch solution of linear equations");
6924 be176b7e110a [project @ 2007-09-25 19:08:19 by dbateman] dbateman parents: 6840 diff changeset	2732 else if (nr == 0 \|\| nc == 0 \|\| b.cols () == 0)
be176b7e110a [project @ 2007-09-25 19:08:19 by dbateman] dbateman parents: 6840 diff changeset	2733 retval = Matrix (nc, b.cols (), 0.0);
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	2734 else
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	2735 {
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	2736 // Print spparms("spumoni") info if requested
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	2737 int typ = mattype.type ();
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	2738 mattype.info ();
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	2739
5785 6b9cec830d72 [project @ 2006-05-03 19:32:46 by dbateman] dbateman parents: 5775 diff changeset	2740 if (typ == MatrixType::Permuted_Lower \|\|
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2741 typ == MatrixType::Lower)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2742 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2743 double anorm = 0.;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2744 double ainvnorm = 0.;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2745 octave_idx_type b_nc = b.cols ();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2746 rcond = 1.;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2747
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2748 if (calc_cond)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2749 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2750 // Calculate the 1-norm of matrix for rcond calculation
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2751 for (octave_idx_type j = 0; j < nc; j++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2752 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2753 double atmp = 0.;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2754 for (octave_idx_type i = cidx(j); i < cidx(j+1); i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2755 atmp += fabs(data(i));
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2756 if (atmp > anorm)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2757 anorm = atmp;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2758 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2759 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2760
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2761 if (typ == MatrixType::Permuted_Lower)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2762 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2763 retval.resize (nc, b_nc);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2764 OCTAVE_LOCAL_BUFFER (double, work, nm);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2765 octave_idx_type *perm = mattype.triangular_perm ();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2766
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2767 for (octave_idx_type j = 0; j < b_nc; j++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2768 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2769 if (nc > nr)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2770 for (octave_idx_type i = 0; i < nm; i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2771 work[i] = 0.;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2772 for (octave_idx_type i = 0; i < nr; i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2773 work[perm[i]] = b(i,j);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2774
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2775 for (octave_idx_type k = 0; k < nc; k++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2776 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2777 if (work[k] != 0.)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2778 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2779 octave_idx_type minr = nr;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2780 octave_idx_type mini = 0;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2781
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2782 for (octave_idx_type i = cidx(k); i < cidx(k+1); i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2783 if (perm[ridx(i)] < minr)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2784 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2785 minr = perm[ridx(i)];
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2786 mini = i;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2787 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2788
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2789 if (minr != k \|\| data(mini) == 0)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2790 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2791 err = -2;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2792 goto triangular_error;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2793 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2794
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2795 double tmp = work[k] / data(mini);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2796 work[k] = tmp;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2797 for (octave_idx_type i = cidx(k); i < cidx(k+1); i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2798 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2799 if (i == mini)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2800 continue;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2801
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2802 octave_idx_type iidx = perm[ridx(i)];
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2803 work[iidx] = work[iidx] - tmp * data(i);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2804 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2805 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2806 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2807
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2808 for (octave_idx_type i = 0; i < nc; i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2809 retval (i, j) = work[i];
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2810 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2811
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2812 if (calc_cond)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2813 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2814 // Calculation of 1-norm of inv(*this)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2815 for (octave_idx_type i = 0; i < nm; i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2816 work[i] = 0.;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2817
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2818 for (octave_idx_type j = 0; j < nr; j++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2819 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2820 work[j] = 1.;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2821
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2822 for (octave_idx_type k = 0; k < nc; k++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2823 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2824 if (work[k] != 0.)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2825 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2826 octave_idx_type minr = nr;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2827 octave_idx_type mini = 0;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2828
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2829 for (octave_idx_type i = cidx(k);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2830 i < cidx(k+1); i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2831 if (perm[ridx(i)] < minr)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2832 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2833 minr = perm[ridx(i)];
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2834 mini = i;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2835 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2836
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2837 double tmp = work[k] / data(mini);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2838 work[k] = tmp;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2839 for (octave_idx_type i = cidx(k);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2840 i < cidx(k+1); i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2841 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2842 if (i == mini)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2843 continue;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2844
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2845 octave_idx_type iidx = perm[ridx(i)];
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2846 work[iidx] = work[iidx] - tmp * data(i);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2847 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2848 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2849 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2850
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2851 double atmp = 0;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2852 for (octave_idx_type i = j; i < nc; i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2853 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2854 atmp += fabs(work[i]);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2855 work[i] = 0.;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2856 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2857 if (atmp > ainvnorm)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2858 ainvnorm = atmp;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2859 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2860 rcond = 1. / ainvnorm / anorm;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2861 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2862 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2863 else
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2864 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2865 OCTAVE_LOCAL_BUFFER (double, work, nm);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2866 retval.resize (nc, b_nc, 0.);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2867
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2868 for (octave_idx_type j = 0; j < b_nc; j++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2869 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2870 for (octave_idx_type i = 0; i < nr; i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2871 work[i] = b(i,j);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2872 for (octave_idx_type i = nr; i < nc; i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2873 work[i] = 0.;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2874 for (octave_idx_type k = 0; k < nc; k++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2875 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2876 if (work[k] != 0.)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2877 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2878 if (ridx(cidx(k)) != k \|\|
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2879 data(cidx(k)) == 0.)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2880 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2881 err = -2;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2882 goto triangular_error;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2883 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2884
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2885 double tmp = work[k] / data(cidx(k));
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2886 work[k] = tmp;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2887 for (octave_idx_type i = cidx(k)+1;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2888 i < cidx(k+1); i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2889 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2890 octave_idx_type iidx = ridx(i);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2891 work[iidx] = work[iidx] - tmp * data(i);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2892 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2893 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2894 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2895
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2896 for (octave_idx_type i = 0; i < nc; i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2897 retval.xelem (i, j) = work[i];
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2898 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2899
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2900 if (calc_cond)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2901 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2902 // Calculation of 1-norm of inv(*this)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2903 for (octave_idx_type i = 0; i < nm; i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2904 work[i] = 0.;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2905
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2906 for (octave_idx_type j = 0; j < nr; j++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2907 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2908 work[j] = 1.;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2909
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2910 for (octave_idx_type k = j; k < nc; k++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2911 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2912
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2913 if (work[k] != 0.)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2914 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2915 double tmp = work[k] / data(cidx(k));
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2916 work[k] = tmp;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2917 for (octave_idx_type i = cidx(k)+1;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2918 i < cidx(k+1); i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2919 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2920 octave_idx_type iidx = ridx(i);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2921 work[iidx] = work[iidx] - tmp * data(i);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2922 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2923 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2924 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2925 double atmp = 0;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2926 for (octave_idx_type i = j; i < nc; i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2927 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2928 atmp += fabs(work[i]);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2929 work[i] = 0.;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2930 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2931 if (atmp > ainvnorm)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2932 ainvnorm = atmp;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2933 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2934 rcond = 1. / ainvnorm / anorm;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2935 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2936 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2937
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2938 triangular_error:
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2939 if (err != 0)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2940 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2941 if (sing_handler)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2942 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2943 sing_handler (rcond);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2944 mattype.mark_as_rectangular ();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2945 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2946 else
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2947 (*current_liboctave_error_handler)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2948 ("SparseMatrix::solve matrix singular to machine precision, rcond = %g",
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2949 rcond);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2950 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2951
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2952 volatile double rcond_plus_one = rcond + 1.0;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2953
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2954 if (rcond_plus_one == 1.0 \|\| xisnan (rcond))
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2955 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2956 err = -2;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2957
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2958 if (sing_handler)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2959 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2960 sing_handler (rcond);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2961 mattype.mark_as_rectangular ();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2962 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2963 else
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2964 (*current_liboctave_error_handler)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2965 ("matrix singular to machine precision, rcond = %g",
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2966 rcond);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2967 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2968 }
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	2969 else
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2970 (*current_liboctave_error_handler) ("incorrect matrix type");
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	2971 }
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	2972
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	2973 return retval;
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	2974 }
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	2975
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	2976 SparseMatrix
5785 6b9cec830d72 [project @ 2006-05-03 19:32:46 by dbateman] dbateman parents: 5775 diff changeset	2977 SparseMatrix::ltsolve (MatrixType &mattype, const SparseMatrix& b,
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2978 octave_idx_type& err, double& rcond,
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2979 solve_singularity_handler sing_handler,
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	2980 bool calc_cond) const
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	2981 {
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	2982 SparseMatrix retval;
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	2983
5275 23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe] jwe parents: 5261 diff changeset	2984 octave_idx_type nr = rows ();
23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe] jwe parents: 5261 diff changeset	2985 octave_idx_type nc = cols ();
5630 512d0d11ae39 [project @ 2006-02-20 22:05:30 by dbateman] dbateman parents: 5610 diff changeset	2986 octave_idx_type nm = (nc > nr ? nc : nr);
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	2987 err = 0;
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	2988
6924 be176b7e110a [project @ 2007-09-25 19:08:19 by dbateman] dbateman parents: 6840 diff changeset	2989 if (nr != b.rows ())
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	2990 (*current_liboctave_error_handler)
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	2991 ("matrix dimension mismatch solution of linear equations");
6924 be176b7e110a [project @ 2007-09-25 19:08:19 by dbateman] dbateman parents: 6840 diff changeset	2992 else if (nr == 0 \|\| nc == 0 \|\| b.cols () == 0)
be176b7e110a [project @ 2007-09-25 19:08:19 by dbateman] dbateman parents: 6840 diff changeset	2993 retval = SparseMatrix (nc, b.cols ());
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	2994 else
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	2995 {
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	2996 // Print spparms("spumoni") info if requested
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	2997 int typ = mattype.type ();
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	2998 mattype.info ();
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	2999
5785 6b9cec830d72 [project @ 2006-05-03 19:32:46 by dbateman] dbateman parents: 5775 diff changeset	3000 if (typ == MatrixType::Permuted_Lower \|\|
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3001 typ == MatrixType::Lower)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3002 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3003 double anorm = 0.;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3004 double ainvnorm = 0.;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3005 rcond = 1.;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3006
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3007 if (calc_cond)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3008 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3009 // Calculate the 1-norm of matrix for rcond calculation
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3010 for (octave_idx_type j = 0; j < nc; j++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3011 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3012 double atmp = 0.;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3013 for (octave_idx_type i = cidx(j); i < cidx(j+1); i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3014 atmp += fabs(data(i));
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3015 if (atmp > anorm)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3016 anorm = atmp;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3017 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3018 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3019
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3020 octave_idx_type b_nc = b.cols ();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3021 octave_idx_type b_nz = b.nnz ();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3022 retval = SparseMatrix (nc, b_nc, b_nz);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3023 retval.xcidx(0) = 0;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3024 octave_idx_type ii = 0;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3025 octave_idx_type x_nz = b_nz;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3026
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3027 if (typ == MatrixType::Permuted_Lower)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3028 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3029 OCTAVE_LOCAL_BUFFER (double, work, nm);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3030 octave_idx_type *perm = mattype.triangular_perm ();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3031
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3032 for (octave_idx_type j = 0; j < b_nc; j++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3033 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3034 for (octave_idx_type i = 0; i < nm; i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3035 work[i] = 0.;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3036 for (octave_idx_type i = b.cidx(j); i < b.cidx(j+1); i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3037 work[perm[b.ridx(i)]] = b.data(i);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3038
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3039 for (octave_idx_type k = 0; k < nc; k++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3040 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3041 if (work[k] != 0.)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3042 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3043 octave_idx_type minr = nr;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3044 octave_idx_type mini = 0;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3045
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3046 for (octave_idx_type i = cidx(k); i < cidx(k+1); i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3047 if (perm[ridx(i)] < minr)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3048 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3049 minr = perm[ridx(i)];
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3050 mini = i;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3051 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3052
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3053 if (minr != k \|\| data(mini) == 0)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3054 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3055 err = -2;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3056 goto triangular_error;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3057 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3058
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3059 double tmp = work[k] / data(mini);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3060 work[k] = tmp;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3061 for (octave_idx_type i = cidx(k); i < cidx(k+1); i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3062 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3063 if (i == mini)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3064 continue;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3065
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3066 octave_idx_type iidx = perm[ridx(i)];
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3067 work[iidx] = work[iidx] - tmp * data(i);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3068 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3069 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3070 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3071
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3072 // Count non-zeros in work vector and adjust space in
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3073 // retval if needed
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3074 octave_idx_type new_nnz = 0;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3075 for (octave_idx_type i = 0; i < nc; i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3076 if (work[i] != 0.)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3077 new_nnz++;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3078
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3079 if (ii + new_nnz > x_nz)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3080 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3081 // Resize the sparse matrix
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3082 octave_idx_type sz = new_nnz * (b_nc - j) + x_nz;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3083 retval.change_capacity (sz);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3084 x_nz = sz;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3085 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3086
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3087 for (octave_idx_type i = 0; i < nc; i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3088 if (work[i] != 0.)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3089 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3090 retval.xridx(ii) = i;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3091 retval.xdata(ii++) = work[i];
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3092 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3093 retval.xcidx(j+1) = ii;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3094 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3095
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3096 retval.maybe_compress ();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3097
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3098 if (calc_cond)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3099 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3100 // Calculation of 1-norm of inv(*this)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3101 for (octave_idx_type i = 0; i < nm; i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3102 work[i] = 0.;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3103
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3104 for (octave_idx_type j = 0; j < nr; j++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3105 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3106 work[j] = 1.;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3107
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3108 for (octave_idx_type k = 0; k < nc; k++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3109 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3110 if (work[k] != 0.)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3111 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3112 octave_idx_type minr = nr;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3113 octave_idx_type mini = 0;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3114
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3115 for (octave_idx_type i = cidx(k);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3116 i < cidx(k+1); i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3117 if (perm[ridx(i)] < minr)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3118 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3119 minr = perm[ridx(i)];
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3120 mini = i;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3121 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3122
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3123 double tmp = work[k] / data(mini);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3124 work[k] = tmp;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3125 for (octave_idx_type i = cidx(k);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3126 i < cidx(k+1); i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3127 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3128 if (i == mini)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3129 continue;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3130
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3131 octave_idx_type iidx = perm[ridx(i)];
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3132 work[iidx] = work[iidx] - tmp * data(i);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3133 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3134 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3135 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3136
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3137 double atmp = 0;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3138 for (octave_idx_type i = j; i < nr; i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3139 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3140 atmp += fabs(work[i]);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3141 work[i] = 0.;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3142 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3143 if (atmp > ainvnorm)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3144 ainvnorm = atmp;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3145 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3146 rcond = 1. / ainvnorm / anorm;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3147 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3148 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3149 else
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3150 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3151 OCTAVE_LOCAL_BUFFER (double, work, nm);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3152
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3153 for (octave_idx_type j = 0; j < b_nc; j++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3154 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3155 for (octave_idx_type i = 0; i < nm; i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3156 work[i] = 0.;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3157 for (octave_idx_type i = b.cidx(j); i < b.cidx(j+1); i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3158 work[b.ridx(i)] = b.data(i);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3159
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3160 for (octave_idx_type k = 0; k < nc; k++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3161 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3162 if (work[k] != 0.)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3163 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3164 if (ridx(cidx(k)) != k \|\|
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3165 data(cidx(k)) == 0.)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3166 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3167 err = -2;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3168 goto triangular_error;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3169 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3170
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3171 double tmp = work[k] / data(cidx(k));
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3172 work[k] = tmp;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3173 for (octave_idx_type i = cidx(k)+1; i < cidx(k+1); i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3174 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3175 octave_idx_type iidx = ridx(i);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3176 work[iidx] = work[iidx] - tmp * data(i);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3177 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3178 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3179 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3180
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3181 // Count non-zeros in work vector and adjust space in
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3182 // retval if needed
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3183 octave_idx_type new_nnz = 0;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3184 for (octave_idx_type i = 0; i < nc; i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3185 if (work[i] != 0.)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3186 new_nnz++;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3187
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3188 if (ii + new_nnz > x_nz)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3189 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3190 // Resize the sparse matrix
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3191 octave_idx_type sz = new_nnz * (b_nc - j) + x_nz;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3192 retval.change_capacity (sz);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3193 x_nz = sz;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3194 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3195
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3196 for (octave_idx_type i = 0; i < nc; i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3197 if (work[i] != 0.)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3198 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3199 retval.xridx(ii) = i;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3200 retval.xdata(ii++) = work[i];
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3201 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3202 retval.xcidx(j+1) = ii;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3203 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3204
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3205 retval.maybe_compress ();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3206
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3207 if (calc_cond)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3208 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3209 // Calculation of 1-norm of inv(*this)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3210 for (octave_idx_type i = 0; i < nm; i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3211 work[i] = 0.;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3212
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3213 for (octave_idx_type j = 0; j < nr; j++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3214 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3215 work[j] = 1.;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3216
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3217 for (octave_idx_type k = j; k < nc; k++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3218 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3219
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3220 if (work[k] != 0.)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3221 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3222 double tmp = work[k] / data(cidx(k));
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3223 work[k] = tmp;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3224 for (octave_idx_type i = cidx(k)+1;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3225 i < cidx(k+1); i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3226 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3227 octave_idx_type iidx = ridx(i);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3228 work[iidx] = work[iidx] - tmp * data(i);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3229 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3230 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3231 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3232 double atmp = 0;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3233 for (octave_idx_type i = j; i < nc; i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3234 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3235 atmp += fabs(work[i]);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3236 work[i] = 0.;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3237 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3238 if (atmp > ainvnorm)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3239 ainvnorm = atmp;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3240 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3241 rcond = 1. / ainvnorm / anorm;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3242 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3243 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3244
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3245 triangular_error:
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3246 if (err != 0)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3247 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3248 if (sing_handler)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3249 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3250 sing_handler (rcond);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3251 mattype.mark_as_rectangular ();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3252 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3253 else
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3254 (*current_liboctave_error_handler)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3255 ("SparseMatrix::solve matrix singular to machine precision, rcond = %g",
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3256 rcond);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3257 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3258
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3259 volatile double rcond_plus_one = rcond + 1.0;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3260
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3261 if (rcond_plus_one == 1.0 \|\| xisnan (rcond))
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3262 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3263 err = -2;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3264
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3265 if (sing_handler)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3266 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3267 sing_handler (rcond);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3268 mattype.mark_as_rectangular ();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3269 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3270 else
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3271 (*current_liboctave_error_handler)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3272 ("matrix singular to machine precision, rcond = %g",
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3273 rcond);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3274 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3275 }
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	3276 else
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3277 (*current_liboctave_error_handler) ("incorrect matrix type");
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	3278 }
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	3279
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	3280 return retval;
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	3281 }
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	3282
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	3283 ComplexMatrix
5785 6b9cec830d72 [project @ 2006-05-03 19:32:46 by dbateman] dbateman parents: 5775 diff changeset	3284 SparseMatrix::ltsolve (MatrixType &mattype, const ComplexMatrix& b,
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3285 octave_idx_type& err, double& rcond,
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3286 solve_singularity_handler sing_handler,
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3287 bool calc_cond) const
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	3288 {
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	3289 ComplexMatrix retval;
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	3290
5275 23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe] jwe parents: 5261 diff changeset	3291 octave_idx_type nr = rows ();
23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe] jwe parents: 5261 diff changeset	3292 octave_idx_type nc = cols ();
5630 512d0d11ae39 [project @ 2006-02-20 22:05:30 by dbateman] dbateman parents: 5610 diff changeset	3293 octave_idx_type nm = (nc > nr ? nc : nr);
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	3294 err = 0;
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	3295
6924 be176b7e110a [project @ 2007-09-25 19:08:19 by dbateman] dbateman parents: 6840 diff changeset	3296 if (nr != b.rows ())
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	3297 (*current_liboctave_error_handler)
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	3298 ("matrix dimension mismatch solution of linear equations");
6924 be176b7e110a [project @ 2007-09-25 19:08:19 by dbateman] dbateman parents: 6840 diff changeset	3299 else if (nr == 0 \|\| nc == 0 \|\| b.cols () == 0)
be176b7e110a [project @ 2007-09-25 19:08:19 by dbateman] dbateman parents: 6840 diff changeset	3300 retval = ComplexMatrix (nc, b.cols (), Complex (0.0, 0.0));
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	3301 else
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	3302 {
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	3303 // Print spparms("spumoni") info if requested
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	3304 int typ = mattype.type ();
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	3305 mattype.info ();
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	3306
5785 6b9cec830d72 [project @ 2006-05-03 19:32:46 by dbateman] dbateman parents: 5775 diff changeset	3307 if (typ == MatrixType::Permuted_Lower \|\|
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3308 typ == MatrixType::Lower)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3309 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3310 double anorm = 0.;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3311 double ainvnorm = 0.;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3312 octave_idx_type b_nc = b.cols ();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3313 rcond = 1.;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3314
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3315 if (calc_cond)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3316 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3317 // Calculate the 1-norm of matrix for rcond calculation
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3318 for (octave_idx_type j = 0; j < nc; j++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3319 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3320 double atmp = 0.;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3321 for (octave_idx_type i = cidx(j); i < cidx(j+1); i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3322 atmp += fabs(data(i));
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3323 if (atmp > anorm)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3324 anorm = atmp;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3325 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3326 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3327
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3328 if (typ == MatrixType::Permuted_Lower)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3329 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3330 retval.resize (nc, b_nc);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3331 OCTAVE_LOCAL_BUFFER (Complex, cwork, nm);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3332 octave_idx_type *perm = mattype.triangular_perm ();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3333
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3334 for (octave_idx_type j = 0; j < b_nc; j++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3335 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3336 for (octave_idx_type i = 0; i < nm; i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3337 cwork[i] = 0.;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3338 for (octave_idx_type i = 0; i < nr; i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3339 cwork[perm[i]] = b(i,j);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3340
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3341 for (octave_idx_type k = 0; k < nc; k++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3342 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3343 if (cwork[k] != 0.)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3344 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3345 octave_idx_type minr = nr;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3346 octave_idx_type mini = 0;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3347
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3348 for (octave_idx_type i = cidx(k); i < cidx(k+1); i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3349 if (perm[ridx(i)] < minr)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3350 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3351 minr = perm[ridx(i)];
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3352 mini = i;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3353 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3354
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3355 if (minr != k \|\| data(mini) == 0)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3356 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3357 err = -2;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3358 goto triangular_error;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3359 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3360
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3361 Complex tmp = cwork[k] / data(mini);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3362 cwork[k] = tmp;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3363 for (octave_idx_type i = cidx(k); i < cidx(k+1); i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3364 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3365 if (i == mini)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3366 continue;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3367
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3368 octave_idx_type iidx = perm[ridx(i)];
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3369 cwork[iidx] = cwork[iidx] - tmp * data(i);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3370 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3371 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3372 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3373
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3374 for (octave_idx_type i = 0; i < nc; i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3375 retval (i, j) = cwork[i];
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3376 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3377
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3378 if (calc_cond)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3379 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3380 // Calculation of 1-norm of inv(*this)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3381 OCTAVE_LOCAL_BUFFER (double, work, nm);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3382 for (octave_idx_type i = 0; i < nm; i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3383 work[i] = 0.;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3384
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3385 for (octave_idx_type j = 0; j < nr; j++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3386 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3387 work[j] = 1.;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3388
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3389 for (octave_idx_type k = 0; k < nc; k++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3390 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3391 if (work[k] != 0.)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3392 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3393 octave_idx_type minr = nr;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3394 octave_idx_type mini = 0;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3395
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3396 for (octave_idx_type i = cidx(k);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3397 i < cidx(k+1); i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3398 if (perm[ridx(i)] < minr)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3399 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3400 minr = perm[ridx(i)];
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3401 mini = i;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3402 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3403
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3404 double tmp = work[k] / data(mini);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3405 work[k] = tmp;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3406 for (octave_idx_type i = cidx(k);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3407 i < cidx(k+1); i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3408 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3409 if (i == mini)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3410 continue;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3411
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3412 octave_idx_type iidx = perm[ridx(i)];
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3413 work[iidx] = work[iidx] - tmp * data(i);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3414 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3415 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3416 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3417
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3418 double atmp = 0;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3419 for (octave_idx_type i = j; i < nc; i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3420 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3421 atmp += fabs(work[i]);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3422 work[i] = 0.;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3423 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3424 if (atmp > ainvnorm)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3425 ainvnorm = atmp;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3426 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3427 rcond = 1. / ainvnorm / anorm;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3428 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3429 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3430 else
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3431 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3432 OCTAVE_LOCAL_BUFFER (Complex, cwork, nm);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3433 retval.resize (nc, b_nc, 0.);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3434
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3435 for (octave_idx_type j = 0; j < b_nc; j++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3436 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3437 for (octave_idx_type i = 0; i < nr; i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3438 cwork[i] = b(i,j);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3439 for (octave_idx_type i = nr; i < nc; i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3440 cwork[i] = 0.;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3441
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3442 for (octave_idx_type k = 0; k < nc; k++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3443 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3444 if (cwork[k] != 0.)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3445 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3446 if (ridx(cidx(k)) != k \|\|
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3447 data(cidx(k)) == 0.)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3448 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3449 err = -2;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3450 goto triangular_error;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3451 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3452
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3453 Complex tmp = cwork[k] / data(cidx(k));
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3454 cwork[k] = tmp;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3455 for (octave_idx_type i = cidx(k)+1; i < cidx(k+1); i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3456 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3457 octave_idx_type iidx = ridx(i);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3458 cwork[iidx] = cwork[iidx] - tmp * data(i);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3459 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3460 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3461 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3462
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3463 for (octave_idx_type i = 0; i < nc; i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3464 retval.xelem (i, j) = cwork[i];
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3465 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3466
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3467 if (calc_cond)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3468 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3469 // Calculation of 1-norm of inv(*this)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3470 OCTAVE_LOCAL_BUFFER (double, work, nm);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3471 for (octave_idx_type i = 0; i < nm; i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3472 work[i] = 0.;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3473
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3474 for (octave_idx_type j = 0; j < nr; j++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3475 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3476 work[j] = 1.;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3477
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3478 for (octave_idx_type k = j; k < nc; k++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3479 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3480
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3481 if (work[k] != 0.)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3482 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3483 double tmp = work[k] / data(cidx(k));
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3484 work[k] = tmp;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3485 for (octave_idx_type i = cidx(k)+1;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3486 i < cidx(k+1); i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3487 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3488 octave_idx_type iidx = ridx(i);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3489 work[iidx] = work[iidx] - tmp * data(i);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3490 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3491 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3492 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3493 double atmp = 0;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3494 for (octave_idx_type i = j; i < nc; i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3495 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3496 atmp += fabs(work[i]);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3497 work[i] = 0.;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3498 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3499 if (atmp > ainvnorm)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3500 ainvnorm = atmp;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3501 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3502 rcond = 1. / ainvnorm / anorm;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3503 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3504 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3505
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3506 triangular_error:
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3507 if (err != 0)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3508 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3509 if (sing_handler)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3510 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3511 sing_handler (rcond);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3512 mattype.mark_as_rectangular ();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3513 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3514 else
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3515 (*current_liboctave_error_handler)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3516 ("SparseMatrix::solve matrix singular to machine precision, rcond = %g",
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3517 rcond);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3518 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3519
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3520 volatile double rcond_plus_one = rcond + 1.0;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3521
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3522 if (rcond_plus_one == 1.0 \|\| xisnan (rcond))
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3523 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3524 err = -2;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3525
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3526 if (sing_handler)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3527 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3528 sing_handler (rcond);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3529 mattype.mark_as_rectangular ();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3530 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3531 else
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3532 (*current_liboctave_error_handler)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3533 ("matrix singular to machine precision, rcond = %g",
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3534 rcond);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3535 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3536 }
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	3537 else
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3538 (*current_liboctave_error_handler) ("incorrect matrix type");
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	3539 }
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	3540
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	3541 return retval;
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	3542 }
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	3543
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	3544 SparseComplexMatrix
5785 6b9cec830d72 [project @ 2006-05-03 19:32:46 by dbateman] dbateman parents: 5775 diff changeset	3545 SparseMatrix::ltsolve (MatrixType &mattype, const SparseComplexMatrix& b,
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3546 octave_idx_type& err, double& rcond,
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3547 solve_singularity_handler sing_handler,
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3548 bool calc_cond) const
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	3549 {
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	3550 SparseComplexMatrix retval;
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	3551
5275 23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe] jwe parents: 5261 diff changeset	3552 octave_idx_type nr = rows ();
23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe] jwe parents: 5261 diff changeset	3553 octave_idx_type nc = cols ();
5630 512d0d11ae39 [project @ 2006-02-20 22:05:30 by dbateman] dbateman parents: 5610 diff changeset	3554 octave_idx_type nm = (nc > nr ? nc : nr);
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	3555 err = 0;
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	3556
6924 be176b7e110a [project @ 2007-09-25 19:08:19 by dbateman] dbateman parents: 6840 diff changeset	3557 if (nr != b.rows ())
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	3558 (*current_liboctave_error_handler)
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	3559 ("matrix dimension mismatch solution of linear equations");
6924 be176b7e110a [project @ 2007-09-25 19:08:19 by dbateman] dbateman parents: 6840 diff changeset	3560 else if (nr == 0 \|\| nc == 0 \|\| b.cols () == 0)
be176b7e110a [project @ 2007-09-25 19:08:19 by dbateman] dbateman parents: 6840 diff changeset	3561 retval = SparseComplexMatrix (nc, b.cols ());
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	3562 else
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	3563 {
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	3564 // Print spparms("spumoni") info if requested
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	3565 int typ = mattype.type ();
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	3566 mattype.info ();
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	3567
5785 6b9cec830d72 [project @ 2006-05-03 19:32:46 by dbateman] dbateman parents: 5775 diff changeset	3568 if (typ == MatrixType::Permuted_Lower \|\|
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3569 typ == MatrixType::Lower)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3570 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3571 double anorm = 0.;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3572 double ainvnorm = 0.;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3573 rcond = 1.;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3574
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3575 if (calc_cond)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3576 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3577 // Calculate the 1-norm of matrix for rcond calculation
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3578 for (octave_idx_type j = 0; j < nc; j++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3579 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3580 double atmp = 0.;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3581 for (octave_idx_type i = cidx(j); i < cidx(j+1); i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3582 atmp += fabs(data(i));
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3583 if (atmp > anorm)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3584 anorm = atmp;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3585 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3586 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3587
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3588 octave_idx_type b_nc = b.cols ();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3589 octave_idx_type b_nz = b.nnz ();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3590 retval = SparseComplexMatrix (nc, b_nc, b_nz);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3591 retval.xcidx(0) = 0;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3592 octave_idx_type ii = 0;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3593 octave_idx_type x_nz = b_nz;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3594
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3595 if (typ == MatrixType::Permuted_Lower)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3596 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3597 OCTAVE_LOCAL_BUFFER (Complex, cwork, nm);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3598 octave_idx_type *perm = mattype.triangular_perm ();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3599
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3600 for (octave_idx_type j = 0; j < b_nc; j++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3601 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3602 for (octave_idx_type i = 0; i < nm; i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3603 cwork[i] = 0.;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3604 for (octave_idx_type i = b.cidx(j); i < b.cidx(j+1); i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3605 cwork[perm[b.ridx(i)]] = b.data(i);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3606
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3607 for (octave_idx_type k = 0; k < nc; k++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3608 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3609 if (cwork[k] != 0.)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3610 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3611 octave_idx_type minr = nr;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3612 octave_idx_type mini = 0;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3613
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3614 for (octave_idx_type i = cidx(k); i < cidx(k+1); i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3615 if (perm[ridx(i)] < minr)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3616 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3617 minr = perm[ridx(i)];
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3618 mini = i;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3619 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3620
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3621 if (minr != k \|\| data(mini) == 0)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3622 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3623 err = -2;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3624 goto triangular_error;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3625 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3626
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3627 Complex tmp = cwork[k] / data(mini);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3628 cwork[k] = tmp;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3629 for (octave_idx_type i = cidx(k); i < cidx(k+1); i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3630 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3631 if (i == mini)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3632 continue;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3633
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3634 octave_idx_type iidx = perm[ridx(i)];
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3635 cwork[iidx] = cwork[iidx] - tmp * data(i);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3636 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3637 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3638 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3639
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3640 // Count non-zeros in work vector and adjust space in
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3641 // retval if needed
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3642 octave_idx_type new_nnz = 0;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3643 for (octave_idx_type i = 0; i < nc; i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3644 if (cwork[i] != 0.)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3645 new_nnz++;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3646
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3647 if (ii + new_nnz > x_nz)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3648 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3649 // Resize the sparse matrix
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3650 octave_idx_type sz = new_nnz * (b_nc - j) + x_nz;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3651 retval.change_capacity (sz);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3652 x_nz = sz;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3653 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3654
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3655 for (octave_idx_type i = 0; i < nc; i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3656 if (cwork[i] != 0.)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3657 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3658 retval.xridx(ii) = i;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3659 retval.xdata(ii++) = cwork[i];
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3660 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3661 retval.xcidx(j+1) = ii;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3662 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3663
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3664 retval.maybe_compress ();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3665
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3666 if (calc_cond)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3667 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3668 // Calculation of 1-norm of inv(*this)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3669 OCTAVE_LOCAL_BUFFER (double, work, nm);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3670 for (octave_idx_type i = 0; i < nm; i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3671 work[i] = 0.;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3672
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3673 for (octave_idx_type j = 0; j < nr; j++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3674 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3675 work[j] = 1.;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3676
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3677 for (octave_idx_type k = 0; k < nc; k++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3678 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3679 if (work[k] != 0.)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3680 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3681 octave_idx_type minr = nr;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3682 octave_idx_type mini = 0;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3683
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3684 for (octave_idx_type i = cidx(k);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3685 i < cidx(k+1); i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3686 if (perm[ridx(i)] < minr)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3687 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3688 minr = perm[ridx(i)];
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3689 mini = i;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3690 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3691
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3692 double tmp = work[k] / data(mini);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3693 work[k] = tmp;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3694 for (octave_idx_type i = cidx(k);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3695 i < cidx(k+1); i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3696 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3697 if (i == mini)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3698 continue;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3699
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3700 octave_idx_type iidx = perm[ridx(i)];
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3701 work[iidx] = work[iidx] - tmp * data(i);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3702 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3703 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3704 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3705
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3706 double atmp = 0;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3707 for (octave_idx_type i = j; i < nc; i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3708 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3709 atmp += fabs(work[i]);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3710 work[i] = 0.;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3711 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3712 if (atmp > ainvnorm)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3713 ainvnorm = atmp;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3714 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3715 rcond = 1. / ainvnorm / anorm;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3716 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3717 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3718 else
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3719 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3720 OCTAVE_LOCAL_BUFFER (Complex, cwork, nm);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3721
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3722 for (octave_idx_type j = 0; j < b_nc; j++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3723 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3724 for (octave_idx_type i = 0; i < nm; i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3725 cwork[i] = 0.;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3726 for (octave_idx_type i = b.cidx(j); i < b.cidx(j+1); i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3727 cwork[b.ridx(i)] = b.data(i);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3728
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3729 for (octave_idx_type k = 0; k < nc; k++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3730 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3731 if (cwork[k] != 0.)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3732 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3733 if (ridx(cidx(k)) != k \|\|
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3734 data(cidx(k)) == 0.)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3735 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3736 err = -2;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3737 goto triangular_error;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3738 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3739
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3740 Complex tmp = cwork[k] / data(cidx(k));
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3741 cwork[k] = tmp;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3742 for (octave_idx_type i = cidx(k)+1; i < cidx(k+1); i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3743 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3744 octave_idx_type iidx = ridx(i);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3745 cwork[iidx] = cwork[iidx] - tmp * data(i);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3746 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3747 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3748 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3749
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3750 // Count non-zeros in work vector and adjust space in
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3751 // retval if needed
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3752 octave_idx_type new_nnz = 0;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3753 for (octave_idx_type i = 0; i < nc; i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3754 if (cwork[i] != 0.)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3755 new_nnz++;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3756
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3757 if (ii + new_nnz > x_nz)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3758 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3759 // Resize the sparse matrix
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3760 octave_idx_type sz = new_nnz * (b_nc - j) + x_nz;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3761 retval.change_capacity (sz);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3762 x_nz = sz;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3763 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3764
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3765 for (octave_idx_type i = 0; i < nc; i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3766 if (cwork[i] != 0.)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3767 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3768 retval.xridx(ii) = i;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3769 retval.xdata(ii++) = cwork[i];
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3770 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3771 retval.xcidx(j+1) = ii;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3772 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3773
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3774 retval.maybe_compress ();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3775
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3776 if (calc_cond)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3777 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3778 // Calculation of 1-norm of inv(*this)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3779 OCTAVE_LOCAL_BUFFER (double, work, nm);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3780 for (octave_idx_type i = 0; i < nm; i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3781 work[i] = 0.;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3782
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3783 for (octave_idx_type j = 0; j < nr; j++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3784 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3785 work[j] = 1.;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3786
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3787 for (octave_idx_type k = j; k < nc; k++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3788 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3789
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3790 if (work[k] != 0.)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3791 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3792 double tmp = work[k] / data(cidx(k));
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3793 work[k] = tmp;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3794 for (octave_idx_type i = cidx(k)+1;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3795 i < cidx(k+1); i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3796 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3797 octave_idx_type iidx = ridx(i);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3798 work[iidx] = work[iidx] - tmp * data(i);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3799 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3800 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3801 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3802 double atmp = 0;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3803 for (octave_idx_type i = j; i < nc; i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3804 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3805 atmp += fabs(work[i]);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3806 work[i] = 0.;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3807 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3808 if (atmp > ainvnorm)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3809 ainvnorm = atmp;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3810 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3811 rcond = 1. / ainvnorm / anorm;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3812 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3813 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3814
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3815 triangular_error:
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3816 if (err != 0)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3817 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3818 if (sing_handler)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3819 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3820 sing_handler (rcond);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3821 mattype.mark_as_rectangular ();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3822 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3823 else
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3824 (*current_liboctave_error_handler)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3825 ("SparseMatrix::solve matrix singular to machine precision, rcond = %g",
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3826 rcond);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3827 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3828
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3829 volatile double rcond_plus_one = rcond + 1.0;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3830
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3831 if (rcond_plus_one == 1.0 \|\| xisnan (rcond))
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3832 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3833 err = -2;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3834
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3835 if (sing_handler)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3836 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3837 sing_handler (rcond);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3838 mattype.mark_as_rectangular ();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3839 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3840 else
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3841 (*current_liboctave_error_handler)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3842 ("matrix singular to machine precision, rcond = %g",
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3843 rcond);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3844 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3845 }
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	3846 else
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3847 (*current_liboctave_error_handler) ("incorrect matrix type");
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	3848 }
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	3849
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	3850 return retval;
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	3851 }
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	3852
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	3853 Matrix
5785 6b9cec830d72 [project @ 2006-05-03 19:32:46 by dbateman] dbateman parents: 5775 diff changeset	3854 SparseMatrix::trisolve (MatrixType &mattype, const Matrix& b,
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3855 octave_idx_type& err, double& rcond,
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3856 solve_singularity_handler sing_handler,
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3857 bool calc_cond) const
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	3858 {
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	3859 Matrix retval;
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	3860
5275 23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe] jwe parents: 5261 diff changeset	3861 octave_idx_type nr = rows ();
23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe] jwe parents: 5261 diff changeset	3862 octave_idx_type nc = cols ();
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	3863 err = 0;
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	3864
6924 be176b7e110a [project @ 2007-09-25 19:08:19 by dbateman] dbateman parents: 6840 diff changeset	3865 if (nr != nc \|\| nr != b.rows ())
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	3866 (*current_liboctave_error_handler)
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	3867 ("matrix dimension mismatch solution of linear equations");
6924 be176b7e110a [project @ 2007-09-25 19:08:19 by dbateman] dbateman parents: 6840 diff changeset	3868 else if (nr == 0 \|\| b.cols () == 0)
be176b7e110a [project @ 2007-09-25 19:08:19 by dbateman] dbateman parents: 6840 diff changeset	3869 retval = Matrix (nc, b.cols (), 0.0);
5681 233d98d95659 [project @ 2006-03-16 17:48:55 by dbateman] dbateman parents: 5630 diff changeset	3870 else if (calc_cond)
233d98d95659 [project @ 2006-03-16 17:48:55 by dbateman] dbateman parents: 5630 diff changeset	3871 (*current_liboctave_error_handler)
233d98d95659 [project @ 2006-03-16 17:48:55 by dbateman] dbateman parents: 5630 diff changeset	3872 ("calculation of condition number not implemented");
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	3873 else
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	3874 {
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	3875 // Print spparms("spumoni") info if requested
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	3876 volatile int typ = mattype.type ();
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	3877 mattype.info ();
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	3878
5785 6b9cec830d72 [project @ 2006-05-03 19:32:46 by dbateman] dbateman parents: 5775 diff changeset	3879 if (typ == MatrixType::Tridiagonal_Hermitian)
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3880 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3881 OCTAVE_LOCAL_BUFFER (double, D, nr);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3882 OCTAVE_LOCAL_BUFFER (double, DL, nr - 1);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3883
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3884 if (mattype.is_dense ())
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3885 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3886 octave_idx_type ii = 0;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3887
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3888 for (octave_idx_type j = 0; j < nc-1; j++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3889 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3890 D[j] = data(ii++);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3891 DL[j] = data(ii);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3892 ii += 2;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3893 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3894 D[nc-1] = data(ii);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3895 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3896 else
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3897 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3898 D[0] = 0.;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3899 for (octave_idx_type i = 0; i < nr - 1; i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3900 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3901 D[i+1] = 0.;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3902 DL[i] = 0.;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3903 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3904
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3905 for (octave_idx_type j = 0; j < nc; j++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3906 for (octave_idx_type i = cidx(j); i < cidx(j+1); i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3907 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3908 if (ridx(i) == j)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3909 D[j] = data(i);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3910 else if (ridx(i) == j + 1)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3911 DL[j] = data(i);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3912 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3913 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3914
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3915 octave_idx_type b_nc = b.cols();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3916 retval = b;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3917 double *result = retval.fortran_vec ();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3918
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3919 F77_XFCN (dptsv, DPTSV, (nr, b_nc, D, DL, result,
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3920 b.rows(), err));
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3921
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3922 if (err != 0)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3923 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3924 err = 0;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3925 mattype.mark_as_unsymmetric ();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3926 typ = MatrixType::Tridiagonal;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3927 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3928 else
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3929 rcond = 1.;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3930 }
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	3931
5785 6b9cec830d72 [project @ 2006-05-03 19:32:46 by dbateman] dbateman parents: 5775 diff changeset	3932 if (typ == MatrixType::Tridiagonal)
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3933 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3934 OCTAVE_LOCAL_BUFFER (double, DU, nr - 1);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3935 OCTAVE_LOCAL_BUFFER (double, D, nr);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3936 OCTAVE_LOCAL_BUFFER (double, DL, nr - 1);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3937
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3938 if (mattype.is_dense ())
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3939 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3940 octave_idx_type ii = 0;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3941
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3942 for (octave_idx_type j = 0; j < nc-1; j++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3943 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3944 D[j] = data(ii++);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3945 DL[j] = data(ii++);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3946 DU[j] = data(ii++);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3947 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3948 D[nc-1] = data(ii);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3949 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3950 else
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3951 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3952 D[0] = 0.;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3953 for (octave_idx_type i = 0; i < nr - 1; i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3954 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3955 D[i+1] = 0.;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3956 DL[i] = 0.;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3957 DU[i] = 0.;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3958 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3959
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3960 for (octave_idx_type j = 0; j < nc; j++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3961 for (octave_idx_type i = cidx(j); i < cidx(j+1); i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3962 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3963 if (ridx(i) == j)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3964 D[j] = data(i);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3965 else if (ridx(i) == j + 1)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3966 DL[j] = data(i);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3967 else if (ridx(i) == j - 1)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3968 DU[j-1] = data(i);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3969 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3970 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3971
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3972 octave_idx_type b_nc = b.cols();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3973 retval = b;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3974 double *result = retval.fortran_vec ();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3975
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3976 F77_XFCN (dgtsv, DGTSV, (nr, b_nc, DL, D, DU, result,
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3977 b.rows(), err));
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3978
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3979 if (err != 0)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3980 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3981 rcond = 0.;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3982 err = -2;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3983
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3984 if (sing_handler)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3985 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3986 sing_handler (rcond);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3987 mattype.mark_as_rectangular ();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3988 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3989 else
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3990 (*current_liboctave_error_handler)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3991 ("matrix singular to machine precision");
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3992
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3993 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3994 else
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3995 rcond = 1.;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3996 }
5785 6b9cec830d72 [project @ 2006-05-03 19:32:46 by dbateman] dbateman parents: 5775 diff changeset	3997 else if (typ != MatrixType::Tridiagonal_Hermitian)
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	3998 (*current_liboctave_error_handler) ("incorrect matrix type");
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	3999 }
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	4000
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	4001 return retval;
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	4002 }
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	4003
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	4004 SparseMatrix
5785 6b9cec830d72 [project @ 2006-05-03 19:32:46 by dbateman] dbateman parents: 5775 diff changeset	4005 SparseMatrix::trisolve (MatrixType &mattype, const SparseMatrix& b,
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4006 octave_idx_type& err, double& rcond,
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4007 solve_singularity_handler sing_handler,
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4008 bool calc_cond) const
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	4009 {
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	4010 SparseMatrix retval;
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	4011
5275 23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe] jwe parents: 5261 diff changeset	4012 octave_idx_type nr = rows ();
23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe] jwe parents: 5261 diff changeset	4013 octave_idx_type nc = cols ();
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	4014 err = 0;
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	4015
6924 be176b7e110a [project @ 2007-09-25 19:08:19 by dbateman] dbateman parents: 6840 diff changeset	4016 if (nr != nc \|\| nr != b.rows ())
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	4017 (*current_liboctave_error_handler)
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	4018 ("matrix dimension mismatch solution of linear equations");
6924 be176b7e110a [project @ 2007-09-25 19:08:19 by dbateman] dbateman parents: 6840 diff changeset	4019 else if (nr == 0 \|\| b.cols () == 0)
be176b7e110a [project @ 2007-09-25 19:08:19 by dbateman] dbateman parents: 6840 diff changeset	4020 retval = SparseMatrix (nc, b.cols ());
5681 233d98d95659 [project @ 2006-03-16 17:48:55 by dbateman] dbateman parents: 5630 diff changeset	4021 else if (calc_cond)
233d98d95659 [project @ 2006-03-16 17:48:55 by dbateman] dbateman parents: 5630 diff changeset	4022 (*current_liboctave_error_handler)
233d98d95659 [project @ 2006-03-16 17:48:55 by dbateman] dbateman parents: 5630 diff changeset	4023 ("calculation of condition number not implemented");
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	4024 else
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	4025 {
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	4026 // Print spparms("spumoni") info if requested
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	4027 int typ = mattype.type ();
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	4028 mattype.info ();
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	4029
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	4030 // Note can't treat symmetric case as there is no dpttrf function
5785 6b9cec830d72 [project @ 2006-05-03 19:32:46 by dbateman] dbateman parents: 5775 diff changeset	4031 if (typ == MatrixType::Tridiagonal \|\|
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4032 typ == MatrixType::Tridiagonal_Hermitian)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4033 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4034 OCTAVE_LOCAL_BUFFER (double, DU2, nr - 2);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4035 OCTAVE_LOCAL_BUFFER (double, DU, nr - 1);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4036 OCTAVE_LOCAL_BUFFER (double, D, nr);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4037 OCTAVE_LOCAL_BUFFER (double, DL, nr - 1);
10350 12884915a8e4 merge MArray classes & improve Array interface Jaroslav Hajek <highegg@gmail.com> parents: 10314 diff changeset	4038 Array<octave_idx_type> ipvt (nr, 1);
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4039 octave_idx_type *pipvt = ipvt.fortran_vec ();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4040
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4041 if (mattype.is_dense ())
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4042 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4043 octave_idx_type ii = 0;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4044
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4045 for (octave_idx_type j = 0; j < nc-1; j++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4046 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4047 D[j] = data(ii++);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4048 DL[j] = data(ii++);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4049 DU[j] = data(ii++);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4050 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4051 D[nc-1] = data(ii);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4052 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4053 else
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4054 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4055 D[0] = 0.;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4056 for (octave_idx_type i = 0; i < nr - 1; i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4057 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4058 D[i+1] = 0.;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4059 DL[i] = 0.;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4060 DU[i] = 0.;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4061 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4062
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4063 for (octave_idx_type j = 0; j < nc; j++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4064 for (octave_idx_type i = cidx(j); i < cidx(j+1); i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4065 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4066 if (ridx(i) == j)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4067 D[j] = data(i);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4068 else if (ridx(i) == j + 1)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4069 DL[j] = data(i);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4070 else if (ridx(i) == j - 1)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4071 DU[j-1] = data(i);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4072 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4073 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4074
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4075 F77_XFCN (dgttrf, DGTTRF, (nr, DL, D, DU, DU2, pipvt, err));
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4076
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4077 if (err != 0)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4078 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4079 rcond = 0.0;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4080 err = -2;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4081
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4082 if (sing_handler)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4083 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4084 sing_handler (rcond);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4085 mattype.mark_as_rectangular ();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4086 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4087 else
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4088 (*current_liboctave_error_handler)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4089 ("matrix singular to machine precision");
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4090
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4091 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4092 else
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4093 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4094 rcond = 1.0;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4095 char job = 'N';
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4096 volatile octave_idx_type x_nz = b.nnz ();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4097 octave_idx_type b_nc = b.cols ();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4098 retval = SparseMatrix (nr, b_nc, x_nz);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4099 retval.xcidx(0) = 0;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4100 volatile octave_idx_type ii = 0;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4101
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4102 OCTAVE_LOCAL_BUFFER (double, work, nr);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4103
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4104 for (volatile octave_idx_type j = 0; j < b_nc; j++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4105 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4106 for (octave_idx_type i = 0; i < nr; i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4107 work[i] = 0.;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4108 for (octave_idx_type i = b.cidx(j); i < b.cidx(j+1); i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4109 work[b.ridx(i)] = b.data(i);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4110
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4111 F77_XFCN (dgttrs, DGTTRS,
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4112 (F77_CONST_CHAR_ARG2 (&job, 1),
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4113 nr, 1, DL, D, DU, DU2, pipvt,
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4114 work, b.rows (), err
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4115 F77_CHAR_ARG_LEN (1)));
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4116
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4117 // Count non-zeros in work vector and adjust
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4118 // space in retval if needed
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4119 octave_idx_type new_nnz = 0;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4120 for (octave_idx_type i = 0; i < nr; i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4121 if (work[i] != 0.)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4122 new_nnz++;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4123
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4124 if (ii + new_nnz > x_nz)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4125 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4126 // Resize the sparse matrix
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4127 octave_idx_type sz = new_nnz * (b_nc - j) + x_nz;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4128 retval.change_capacity (sz);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4129 x_nz = sz;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4130 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4131
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4132 for (octave_idx_type i = 0; i < nr; i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4133 if (work[i] != 0.)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4134 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4135 retval.xridx(ii) = i;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4136 retval.xdata(ii++) = work[i];
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4137 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4138 retval.xcidx(j+1) = ii;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4139 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4140
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4141 retval.maybe_compress ();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4142 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4143 }
5785 6b9cec830d72 [project @ 2006-05-03 19:32:46 by dbateman] dbateman parents: 5775 diff changeset	4144 else if (typ != MatrixType::Tridiagonal_Hermitian)
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4145 (*current_liboctave_error_handler) ("incorrect matrix type");
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	4146 }
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	4147
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	4148 return retval;
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	4149 }
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	4150
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	4151 ComplexMatrix
5785 6b9cec830d72 [project @ 2006-05-03 19:32:46 by dbateman] dbateman parents: 5775 diff changeset	4152 SparseMatrix::trisolve (MatrixType &mattype, const ComplexMatrix& b,
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4153 octave_idx_type& err, double& rcond,
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4154 solve_singularity_handler sing_handler,
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4155 bool calc_cond) const
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	4156 {
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	4157 ComplexMatrix retval;
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	4158
5275 23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe] jwe parents: 5261 diff changeset	4159 octave_idx_type nr = rows ();
23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe] jwe parents: 5261 diff changeset	4160 octave_idx_type nc = cols ();
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	4161 err = 0;
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	4162
6924 be176b7e110a [project @ 2007-09-25 19:08:19 by dbateman] dbateman parents: 6840 diff changeset	4163 if (nr != nc \|\| nr != b.rows ())
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	4164 (*current_liboctave_error_handler)
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	4165 ("matrix dimension mismatch solution of linear equations");
6924 be176b7e110a [project @ 2007-09-25 19:08:19 by dbateman] dbateman parents: 6840 diff changeset	4166 else if (nr == 0 \|\| b.cols () == 0)
be176b7e110a [project @ 2007-09-25 19:08:19 by dbateman] dbateman parents: 6840 diff changeset	4167 retval = ComplexMatrix (nc, b.cols (), Complex (0.0, 0.0));
5681 233d98d95659 [project @ 2006-03-16 17:48:55 by dbateman] dbateman parents: 5630 diff changeset	4168 else if (calc_cond)
233d98d95659 [project @ 2006-03-16 17:48:55 by dbateman] dbateman parents: 5630 diff changeset	4169 (*current_liboctave_error_handler)
233d98d95659 [project @ 2006-03-16 17:48:55 by dbateman] dbateman parents: 5630 diff changeset	4170 ("calculation of condition number not implemented");
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	4171 else
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	4172 {
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	4173 // Print spparms("spumoni") info if requested
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	4174 volatile int typ = mattype.type ();
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	4175 mattype.info ();
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	4176
5785 6b9cec830d72 [project @ 2006-05-03 19:32:46 by dbateman] dbateman parents: 5775 diff changeset	4177 if (typ == MatrixType::Tridiagonal_Hermitian)
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4178 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4179 OCTAVE_LOCAL_BUFFER (double, D, nr);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4180 OCTAVE_LOCAL_BUFFER (Complex, DL, nr - 1);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4181
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4182 if (mattype.is_dense ())
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4183 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4184 octave_idx_type ii = 0;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4185
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4186 for (octave_idx_type j = 0; j < nc-1; j++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4187 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4188 D[j] = data(ii++);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4189 DL[j] = data(ii);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4190 ii += 2;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4191 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4192 D[nc-1] = data(ii);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4193 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4194 else
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4195 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4196 D[0] = 0.;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4197 for (octave_idx_type i = 0; i < nr - 1; i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4198 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4199 D[i+1] = 0.;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4200 DL[i] = 0.;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4201 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4202
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4203 for (octave_idx_type j = 0; j < nc; j++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4204 for (octave_idx_type i = cidx(j); i < cidx(j+1); i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4205 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4206 if (ridx(i) == j)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4207 D[j] = data(i);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4208 else if (ridx(i) == j + 1)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4209 DL[j] = data(i);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4210 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4211 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4212
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4213 octave_idx_type b_nr = b.rows ();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4214 octave_idx_type b_nc = b.cols();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4215 rcond = 1.;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4216
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4217 retval = b;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4218 Complex *result = retval.fortran_vec ();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4219
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4220 F77_XFCN (zptsv, ZPTSV, (nr, b_nc, D, DL, result,
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4221 b_nr, err));
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4222
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4223 if (err != 0)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4224 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4225 err = 0;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4226 mattype.mark_as_unsymmetric ();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4227 typ = MatrixType::Tridiagonal;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4228 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4229 }
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	4230
5785 6b9cec830d72 [project @ 2006-05-03 19:32:46 by dbateman] dbateman parents: 5775 diff changeset	4231 if (typ == MatrixType::Tridiagonal)
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4232 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4233 OCTAVE_LOCAL_BUFFER (Complex, DU, nr - 1);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4234 OCTAVE_LOCAL_BUFFER (Complex, D, nr);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4235 OCTAVE_LOCAL_BUFFER (Complex, DL, nr - 1);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4236
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4237 if (mattype.is_dense ())
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4238 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4239 octave_idx_type ii = 0;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4240
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4241 for (octave_idx_type j = 0; j < nc-1; j++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4242 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4243 D[j] = data(ii++);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4244 DL[j] = data(ii++);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4245 DU[j] = data(ii++);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4246 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4247 D[nc-1] = data(ii);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4248 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4249 else
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4250 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4251 D[0] = 0.;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4252 for (octave_idx_type i = 0; i < nr - 1; i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4253 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4254 D[i+1] = 0.;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4255 DL[i] = 0.;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4256 DU[i] = 0.;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4257 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4258
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4259 for (octave_idx_type j = 0; j < nc; j++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4260 for (octave_idx_type i = cidx(j); i < cidx(j+1); i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4261 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4262 if (ridx(i) == j)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4263 D[j] = data(i);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4264 else if (ridx(i) == j + 1)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4265 DL[j] = data(i);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4266 else if (ridx(i) == j - 1)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4267 DU[j-1] = data(i);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4268 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4269 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4270
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4271 octave_idx_type b_nr = b.rows();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4272 octave_idx_type b_nc = b.cols();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4273 rcond = 1.;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4274
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4275 retval = b;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4276 Complex *result = retval.fortran_vec ();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4277
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4278 F77_XFCN (zgtsv, ZGTSV, (nr, b_nc, DL, D, DU, result,
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4279 b_nr, err));
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4280
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4281 if (err != 0)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4282 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4283 rcond = 0.;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4284 err = -2;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4285
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4286 if (sing_handler)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4287 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4288 sing_handler (rcond);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4289 mattype.mark_as_rectangular ();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4290 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4291 else
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4292 (*current_liboctave_error_handler)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4293 ("matrix singular to machine precision");
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4294 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4295 }
5785 6b9cec830d72 [project @ 2006-05-03 19:32:46 by dbateman] dbateman parents: 5775 diff changeset	4296 else if (typ != MatrixType::Tridiagonal_Hermitian)
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4297 (*current_liboctave_error_handler) ("incorrect matrix type");
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	4298 }
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	4299
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	4300 return retval;
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	4301 }
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	4302
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	4303 SparseComplexMatrix
5785 6b9cec830d72 [project @ 2006-05-03 19:32:46 by dbateman] dbateman parents: 5775 diff changeset	4304 SparseMatrix::trisolve (MatrixType &mattype, const SparseComplexMatrix& b,
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4305 octave_idx_type& err, double& rcond,
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4306 solve_singularity_handler sing_handler,
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4307 bool calc_cond) const
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	4308 {
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	4309 SparseComplexMatrix retval;
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	4310
5275 23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe] jwe parents: 5261 diff changeset	4311 octave_idx_type nr = rows ();
23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe] jwe parents: 5261 diff changeset	4312 octave_idx_type nc = cols ();
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	4313 err = 0;
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	4314
6924 be176b7e110a [project @ 2007-09-25 19:08:19 by dbateman] dbateman parents: 6840 diff changeset	4315 if (nr != nc \|\| nr != b.rows ())
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	4316 (*current_liboctave_error_handler)
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	4317 ("matrix dimension mismatch solution of linear equations");
6924 be176b7e110a [project @ 2007-09-25 19:08:19 by dbateman] dbateman parents: 6840 diff changeset	4318 else if (nr == 0 \|\| b.cols () == 0)
be176b7e110a [project @ 2007-09-25 19:08:19 by dbateman] dbateman parents: 6840 diff changeset	4319 retval = SparseComplexMatrix (nc, b.cols ());
5681 233d98d95659 [project @ 2006-03-16 17:48:55 by dbateman] dbateman parents: 5630 diff changeset	4320 else if (calc_cond)
233d98d95659 [project @ 2006-03-16 17:48:55 by dbateman] dbateman parents: 5630 diff changeset	4321 (*current_liboctave_error_handler)
233d98d95659 [project @ 2006-03-16 17:48:55 by dbateman] dbateman parents: 5630 diff changeset	4322 ("calculation of condition number not implemented");
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	4323 else
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	4324 {
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	4325 // Print spparms("spumoni") info if requested
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	4326 int typ = mattype.type ();
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	4327 mattype.info ();
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	4328
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	4329 // Note can't treat symmetric case as there is no dpttrf function
5785 6b9cec830d72 [project @ 2006-05-03 19:32:46 by dbateman] dbateman parents: 5775 diff changeset	4330 if (typ == MatrixType::Tridiagonal \|\|
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4331 typ == MatrixType::Tridiagonal_Hermitian)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4332 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4333 OCTAVE_LOCAL_BUFFER (double, DU2, nr - 2);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4334 OCTAVE_LOCAL_BUFFER (double, DU, nr - 1);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4335 OCTAVE_LOCAL_BUFFER (double, D, nr);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4336 OCTAVE_LOCAL_BUFFER (double, DL, nr - 1);
10350 12884915a8e4 merge MArray classes & improve Array interface Jaroslav Hajek <highegg@gmail.com> parents: 10314 diff changeset	4337 Array<octave_idx_type> ipvt (nr, 1);
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4338 octave_idx_type *pipvt = ipvt.fortran_vec ();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4339
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4340 if (mattype.is_dense ())
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4341 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4342 octave_idx_type ii = 0;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4343
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4344 for (octave_idx_type j = 0; j < nc-1; j++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4345 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4346 D[j] = data(ii++);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4347 DL[j] = data(ii++);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4348 DU[j] = data(ii++);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4349 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4350 D[nc-1] = data(ii);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4351 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4352 else
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4353 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4354 D[0] = 0.;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4355 for (octave_idx_type i = 0; i < nr - 1; i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4356 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4357 D[i+1] = 0.;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4358 DL[i] = 0.;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4359 DU[i] = 0.;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4360 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4361
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4362 for (octave_idx_type j = 0; j < nc; j++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4363 for (octave_idx_type i = cidx(j); i < cidx(j+1); i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4364 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4365 if (ridx(i) == j)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4366 D[j] = data(i);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4367 else if (ridx(i) == j + 1)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4368 DL[j] = data(i);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4369 else if (ridx(i) == j - 1)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4370 DU[j-1] = data(i);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4371 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4372 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4373
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4374 F77_XFCN (dgttrf, DGTTRF, (nr, DL, D, DU, DU2, pipvt, err));
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4375
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4376 if (err != 0)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4377 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4378 rcond = 0.0;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4379 err = -2;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4380
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4381 if (sing_handler)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4382 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4383 sing_handler (rcond);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4384 mattype.mark_as_rectangular ();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4385 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4386 else
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4387 (*current_liboctave_error_handler)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4388 ("matrix singular to machine precision");
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4389 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4390 else
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4391 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4392 rcond = 1.;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4393 char job = 'N';
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4394 octave_idx_type b_nr = b.rows ();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4395 octave_idx_type b_nc = b.cols ();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4396 OCTAVE_LOCAL_BUFFER (double, Bx, b_nr);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4397 OCTAVE_LOCAL_BUFFER (double, Bz, b_nr);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4398
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4399 // Take a first guess that the number of non-zero terms
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4400 // will be as many as in b
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4401 volatile octave_idx_type x_nz = b.nnz ();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4402 volatile octave_idx_type ii = 0;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4403 retval = SparseComplexMatrix (b_nr, b_nc, x_nz);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4404
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4405 retval.xcidx(0) = 0;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4406 for (volatile octave_idx_type j = 0; j < b_nc; j++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4407 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4408
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4409 for (octave_idx_type i = 0; i < b_nr; i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4410 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4411 Complex c = b (i,j);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4412 Bx[i] = std::real (c);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4413 Bz[i] = std::imag (c);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4414 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4415
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4416 F77_XFCN (dgttrs, DGTTRS,
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4417 (F77_CONST_CHAR_ARG2 (&job, 1),
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4418 nr, 1, DL, D, DU, DU2, pipvt,
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4419 Bx, b_nr, err
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4420 F77_CHAR_ARG_LEN (1)));
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4421
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4422 if (err != 0)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4423 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4424 (*current_liboctave_error_handler)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4425 ("SparseMatrix::solve solve failed");
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4426
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4427 err = -1;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4428 break;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4429 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4430
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4431 F77_XFCN (dgttrs, DGTTRS,
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4432 (F77_CONST_CHAR_ARG2 (&job, 1),
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4433 nr, 1, DL, D, DU, DU2, pipvt,
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4434 Bz, b_nr, err
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4435 F77_CHAR_ARG_LEN (1)));
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4436
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4437 if (err != 0)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4438 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4439 (*current_liboctave_error_handler)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4440 ("SparseMatrix::solve solve failed");
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4441
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4442 err = -1;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4443 break;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4444 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4445
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4446 // Count non-zeros in work vector and adjust
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4447 // space in retval if needed
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4448 octave_idx_type new_nnz = 0;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4449 for (octave_idx_type i = 0; i < nr; i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4450 if (Bx[i] != 0. \|\| Bz[i] != 0.)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4451 new_nnz++;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4452
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4453 if (ii + new_nnz > x_nz)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4454 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4455 // Resize the sparse matrix
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4456 octave_idx_type sz = new_nnz * (b_nc - j) + x_nz;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4457 retval.change_capacity (sz);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4458 x_nz = sz;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4459 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4460
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4461 for (octave_idx_type i = 0; i < nr; i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4462 if (Bx[i] != 0. \|\| Bz[i] != 0.)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4463 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4464 retval.xridx(ii) = i;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4465 retval.xdata(ii++) =
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4466 Complex (Bx[i], Bz[i]);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4467 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4468
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4469 retval.xcidx(j+1) = ii;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4470 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4471
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4472 retval.maybe_compress ();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4473 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4474 }
5785 6b9cec830d72 [project @ 2006-05-03 19:32:46 by dbateman] dbateman parents: 5775 diff changeset	4475 else if (typ != MatrixType::Tridiagonal_Hermitian)
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4476 (*current_liboctave_error_handler) ("incorrect matrix type");
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	4477 }
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	4478
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	4479 return retval;
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	4480 }
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	4481
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	4482 Matrix
5785 6b9cec830d72 [project @ 2006-05-03 19:32:46 by dbateman] dbateman parents: 5775 diff changeset	4483 SparseMatrix::bsolve (MatrixType &mattype, const Matrix& b,
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4484 octave_idx_type& err, double& rcond,
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4485 solve_singularity_handler sing_handler,
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4486 bool calc_cond) const
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	4487 {
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	4488 Matrix retval;
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	4489
5275 23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe] jwe parents: 5261 diff changeset	4490 octave_idx_type nr = rows ();
23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe] jwe parents: 5261 diff changeset	4491 octave_idx_type nc = cols ();
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	4492 err = 0;
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	4493
6924 be176b7e110a [project @ 2007-09-25 19:08:19 by dbateman] dbateman parents: 6840 diff changeset	4494 if (nr != nc \|\| nr != b.rows ())
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	4495 (*current_liboctave_error_handler)
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	4496 ("matrix dimension mismatch solution of linear equations");
6924 be176b7e110a [project @ 2007-09-25 19:08:19 by dbateman] dbateman parents: 6840 diff changeset	4497 else if (nr == 0 \|\| b.cols () == 0)
be176b7e110a [project @ 2007-09-25 19:08:19 by dbateman] dbateman parents: 6840 diff changeset	4498 retval = Matrix (nc, b.cols (), 0.0);
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	4499 else
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	4500 {
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	4501 // Print spparms("spumoni") info if requested
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	4502 volatile int typ = mattype.type ();
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	4503 mattype.info ();
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	4504
5785 6b9cec830d72 [project @ 2006-05-03 19:32:46 by dbateman] dbateman parents: 5775 diff changeset	4505 if (typ == MatrixType::Banded_Hermitian)
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4506 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4507 octave_idx_type n_lower = mattype.nlower ();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4508 octave_idx_type ldm = n_lower + 1;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4509 Matrix m_band (ldm, nc);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4510 double *tmp_data = m_band.fortran_vec ();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4511
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4512 if (! mattype.is_dense ())
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4513 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4514 octave_idx_type ii = 0;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4515
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4516 for (octave_idx_type j = 0; j < ldm; j++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4517 for (octave_idx_type i = 0; i < nc; i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4518 tmp_data[ii++] = 0.;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4519 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4520
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4521 for (octave_idx_type j = 0; j < nc; j++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4522 for (octave_idx_type i = cidx(j); i < cidx(j+1); i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4523 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4524 octave_idx_type ri = ridx (i);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4525 if (ri >= j)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4526 m_band(ri - j, j) = data(i);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4527 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4528
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4529 // Calculate the norm of the matrix, for later use.
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4530 double anorm;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4531 if (calc_cond)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4532 anorm = m_band.abs().sum().row(0).max();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4533
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4534 char job = 'L';
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4535 F77_XFCN (dpbtrf, DPBTRF, (F77_CONST_CHAR_ARG2 (&job, 1),
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4536 nr, n_lower, tmp_data, ldm, err
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4537 F77_CHAR_ARG_LEN (1)));
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4538
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4539 if (err != 0)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4540 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4541 // Matrix is not positive definite!! Fall through to
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4542 // unsymmetric banded solver.
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4543 mattype.mark_as_unsymmetric ();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4544 typ = MatrixType::Banded;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4545 rcond = 0.0;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4546 err = 0;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4547 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4548 else
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4549 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4550 if (calc_cond)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4551 {
10350 12884915a8e4 merge MArray classes & improve Array interface Jaroslav Hajek <highegg@gmail.com> parents: 10314 diff changeset	4552 Array<double> z (3 * nr, 1);
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4553 double *pz = z.fortran_vec ();
10350 12884915a8e4 merge MArray classes & improve Array interface Jaroslav Hajek <highegg@gmail.com> parents: 10314 diff changeset	4554 Array<octave_idx_type> iz (nr, 1);
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4555 octave_idx_type *piz = iz.fortran_vec ();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4556
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4557 F77_XFCN (dpbcon, DPBCON,
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4558 (F77_CONST_CHAR_ARG2 (&job, 1),
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4559 nr, n_lower, tmp_data, ldm,
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4560 anorm, rcond, pz, piz, err
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4561 F77_CHAR_ARG_LEN (1)));
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4562
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4563 if (err != 0)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4564 err = -2;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4565
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4566 volatile double rcond_plus_one = rcond + 1.0;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4567
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4568 if (rcond_plus_one == 1.0 \|\| xisnan (rcond))
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4569 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4570 err = -2;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4571
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4572 if (sing_handler)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4573 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4574 sing_handler (rcond);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4575 mattype.mark_as_rectangular ();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4576 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4577 else
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4578 (*current_liboctave_error_handler)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4579 ("matrix singular to machine precision, rcond = %g",
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4580 rcond);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4581 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4582 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4583 else
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4584 rcond = 1.;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4585
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4586 if (err == 0)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4587 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4588 retval = b;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4589 double *result = retval.fortran_vec ();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4590
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4591 octave_idx_type b_nc = b.cols ();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4592
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4593 F77_XFCN (dpbtrs, DPBTRS,
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4594 (F77_CONST_CHAR_ARG2 (&job, 1),
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4595 nr, n_lower, b_nc, tmp_data,
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4596 ldm, result, b.rows(), err
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4597 F77_CHAR_ARG_LEN (1)));
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4598
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4599 if (err != 0)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4600 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4601 (*current_liboctave_error_handler)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4602 ("SparseMatrix::solve solve failed");
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4603 err = -1;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4604 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4605 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4606 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4607 }
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	4608
5785 6b9cec830d72 [project @ 2006-05-03 19:32:46 by dbateman] dbateman parents: 5775 diff changeset	4609 if (typ == MatrixType::Banded)
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4610 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4611 // Create the storage for the banded form of the sparse matrix
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4612 octave_idx_type n_upper = mattype.nupper ();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4613 octave_idx_type n_lower = mattype.nlower ();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4614 octave_idx_type ldm = n_upper + 2 * n_lower + 1;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4615
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4616 Matrix m_band (ldm, nc);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4617 double *tmp_data = m_band.fortran_vec ();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4618
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4619 if (! mattype.is_dense ())
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4620 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4621 octave_idx_type ii = 0;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4622
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4623 for (octave_idx_type j = 0; j < ldm; j++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4624 for (octave_idx_type i = 0; i < nc; i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4625 tmp_data[ii++] = 0.;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4626 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4627
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4628 for (octave_idx_type j = 0; j < nc; j++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4629 for (octave_idx_type i = cidx(j); i < cidx(j+1); i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4630 m_band(ridx(i) - j + n_lower + n_upper, j) = data(i);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4631
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4632 // Calculate the norm of the matrix, for later use.
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4633 double anorm;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4634 if (calc_cond)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4635 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4636 for (octave_idx_type j = 0; j < nr; j++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4637 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4638 double atmp = 0.;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4639 for (octave_idx_type i = cidx(j); i < cidx(j+1); i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4640 atmp += fabs(data(i));
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4641 if (atmp > anorm)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4642 anorm = atmp;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4643 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4644 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4645
10350 12884915a8e4 merge MArray classes & improve Array interface Jaroslav Hajek <highegg@gmail.com> parents: 10314 diff changeset	4646 Array<octave_idx_type> ipvt (nr, 1);
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4647 octave_idx_type *pipvt = ipvt.fortran_vec ();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4648
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4649 F77_XFCN (dgbtrf, DGBTRF, (nr, nr, n_lower, n_upper, tmp_data,
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4650 ldm, pipvt, err));
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4651
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4652 // Throw-away extra info LAPACK gives so as to not
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4653 // change output.
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4654 if (err != 0)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4655 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4656 err = -2;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4657 rcond = 0.0;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4658
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4659 if (sing_handler)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4660 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4661 sing_handler (rcond);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4662 mattype.mark_as_rectangular ();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4663 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4664 else
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4665 (*current_liboctave_error_handler)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4666 ("matrix singular to machine precision");
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4667
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4668 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4669 else
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4670 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4671 if (calc_cond)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4672 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4673 char job = '1';
10350 12884915a8e4 merge MArray classes & improve Array interface Jaroslav Hajek <highegg@gmail.com> parents: 10314 diff changeset	4674 Array<double> z (3 * nr, 1);
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4675 double *pz = z.fortran_vec ();
10350 12884915a8e4 merge MArray classes & improve Array interface Jaroslav Hajek <highegg@gmail.com> parents: 10314 diff changeset	4676 Array<octave_idx_type> iz (nr, 1);
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4677 octave_idx_type *piz = iz.fortran_vec ();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4678
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4679 F77_XFCN (dgbcon, DGBCON,
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4680 (F77_CONST_CHAR_ARG2 (&job, 1),
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4681 nc, n_lower, n_upper, tmp_data, ldm, pipvt,
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4682 anorm, rcond, pz, piz, err
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4683 F77_CHAR_ARG_LEN (1)));
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4684
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4685 if (err != 0)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4686 err = -2;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4687
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4688 volatile double rcond_plus_one = rcond + 1.0;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4689
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4690 if (rcond_plus_one == 1.0 \|\| xisnan (rcond))
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4691 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4692 err = -2;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4693
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4694 if (sing_handler)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4695 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4696 sing_handler (rcond);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4697 mattype.mark_as_rectangular ();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4698 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4699 else
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4700 (*current_liboctave_error_handler)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4701 ("matrix singular to machine precision, rcond = %g",
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4702 rcond);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4703 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4704 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4705 else
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4706 rcond = 1.;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4707
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4708 if (err == 0)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4709 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4710 retval = b;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4711 double *result = retval.fortran_vec ();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4712
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4713 octave_idx_type b_nc = b.cols ();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4714
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4715 char job = 'N';
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4716 F77_XFCN (dgbtrs, DGBTRS,
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4717 (F77_CONST_CHAR_ARG2 (&job, 1),
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4718 nr, n_lower, n_upper, b_nc, tmp_data,
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4719 ldm, pipvt, result, b.rows(), err
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4720 F77_CHAR_ARG_LEN (1)));
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4721 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4722 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4723 }
5785 6b9cec830d72 [project @ 2006-05-03 19:32:46 by dbateman] dbateman parents: 5775 diff changeset	4724 else if (typ != MatrixType::Banded_Hermitian)
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4725 (*current_liboctave_error_handler) ("incorrect matrix type");
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	4726 }
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	4727
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	4728 return retval;
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	4729 }
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	4730
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	4731 SparseMatrix
5785 6b9cec830d72 [project @ 2006-05-03 19:32:46 by dbateman] dbateman parents: 5775 diff changeset	4732 SparseMatrix::bsolve (MatrixType &mattype, const SparseMatrix& b,
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4733 octave_idx_type& err, double& rcond,
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4734 solve_singularity_handler sing_handler,
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4735 bool calc_cond) const
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	4736 {
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	4737 SparseMatrix retval;
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	4738
5275 23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe] jwe parents: 5261 diff changeset	4739 octave_idx_type nr = rows ();
23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe] jwe parents: 5261 diff changeset	4740 octave_idx_type nc = cols ();
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	4741 err = 0;
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	4742
6924 be176b7e110a [project @ 2007-09-25 19:08:19 by dbateman] dbateman parents: 6840 diff changeset	4743 if (nr != nc \|\| nr != b.rows ())
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	4744 (*current_liboctave_error_handler)
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	4745 ("matrix dimension mismatch solution of linear equations");
6924 be176b7e110a [project @ 2007-09-25 19:08:19 by dbateman] dbateman parents: 6840 diff changeset	4746 else if (nr == 0 \|\| b.cols () == 0)
be176b7e110a [project @ 2007-09-25 19:08:19 by dbateman] dbateman parents: 6840 diff changeset	4747 retval = SparseMatrix (nc, b.cols ());
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	4748 else
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	4749 {
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	4750 // Print spparms("spumoni") info if requested
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	4751 volatile int typ = mattype.type ();
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	4752 mattype.info ();
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	4753
5785 6b9cec830d72 [project @ 2006-05-03 19:32:46 by dbateman] dbateman parents: 5775 diff changeset	4754 if (typ == MatrixType::Banded_Hermitian)
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4755 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4756 octave_idx_type n_lower = mattype.nlower ();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4757 octave_idx_type ldm = n_lower + 1;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4758
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4759 Matrix m_band (ldm, nc);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4760 double *tmp_data = m_band.fortran_vec ();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4761
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4762 if (! mattype.is_dense ())
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4763 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4764 octave_idx_type ii = 0;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4765
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4766 for (octave_idx_type j = 0; j < ldm; j++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4767 for (octave_idx_type i = 0; i < nc; i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4768 tmp_data[ii++] = 0.;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4769 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4770
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4771 for (octave_idx_type j = 0; j < nc; j++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4772 for (octave_idx_type i = cidx(j); i < cidx(j+1); i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4773 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4774 octave_idx_type ri = ridx (i);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4775 if (ri >= j)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4776 m_band(ri - j, j) = data(i);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4777 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4778
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4779 // Calculate the norm of the matrix, for later use.
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4780 double anorm;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4781 if (calc_cond)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4782 anorm = m_band.abs().sum().row(0).max();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4783
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4784 char job = 'L';
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4785 F77_XFCN (dpbtrf, DPBTRF, (F77_CONST_CHAR_ARG2 (&job, 1),
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4786 nr, n_lower, tmp_data, ldm, err
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4787 F77_CHAR_ARG_LEN (1)));
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4788
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4789 if (err != 0)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4790 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4791 mattype.mark_as_unsymmetric ();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4792 typ = MatrixType::Banded;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4793 rcond = 0.0;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4794 err = 0;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4795 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4796 else
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4797 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4798 if (calc_cond)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4799 {
10350 12884915a8e4 merge MArray classes & improve Array interface Jaroslav Hajek <highegg@gmail.com> parents: 10314 diff changeset	4800 Array<double> z (3 * nr, 1);
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4801 double *pz = z.fortran_vec ();
10350 12884915a8e4 merge MArray classes & improve Array interface Jaroslav Hajek <highegg@gmail.com> parents: 10314 diff changeset	4802 Array<octave_idx_type> iz (nr, 1);
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4803 octave_idx_type *piz = iz.fortran_vec ();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4804
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4805 F77_XFCN (dpbcon, DPBCON,
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4806 (F77_CONST_CHAR_ARG2 (&job, 1),
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4807 nr, n_lower, tmp_data, ldm,
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4808 anorm, rcond, pz, piz, err
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4809 F77_CHAR_ARG_LEN (1)));
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4810
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4811 if (err != 0)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4812 err = -2;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4813
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4814 volatile double rcond_plus_one = rcond + 1.0;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4815
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4816 if (rcond_plus_one == 1.0 \|\| xisnan (rcond))
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4817 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4818 err = -2;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4819
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4820 if (sing_handler)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4821 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4822 sing_handler (rcond);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4823 mattype.mark_as_rectangular ();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4824 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4825 else
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4826 (*current_liboctave_error_handler)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4827 ("matrix singular to machine precision, rcond = %g",
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4828 rcond);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4829 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4830 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4831 else
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4832 rcond = 1.;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4833
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4834 if (err == 0)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4835 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4836 octave_idx_type b_nr = b.rows ();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4837 octave_idx_type b_nc = b.cols ();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4838 OCTAVE_LOCAL_BUFFER (double, Bx, b_nr);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4839
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4840 // Take a first guess that the number of non-zero terms
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4841 // will be as many as in b
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4842 volatile octave_idx_type x_nz = b.nnz ();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4843 volatile octave_idx_type ii = 0;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4844 retval = SparseMatrix (b_nr, b_nc, x_nz);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4845
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4846 retval.xcidx(0) = 0;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4847 for (volatile octave_idx_type j = 0; j < b_nc; j++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4848 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4849 for (octave_idx_type i = 0; i < b_nr; i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4850 Bx[i] = b.elem (i, j);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4851
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4852 F77_XFCN (dpbtrs, DPBTRS,
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4853 (F77_CONST_CHAR_ARG2 (&job, 1),
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4854 nr, n_lower, 1, tmp_data,
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4855 ldm, Bx, b_nr, err
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4856 F77_CHAR_ARG_LEN (1)));
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4857
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4858 if (err != 0)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4859 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4860 (*current_liboctave_error_handler)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4861 ("SparseMatrix::solve solve failed");
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4862 err = -1;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4863 break;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4864 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4865
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4866 for (octave_idx_type i = 0; i < b_nr; i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4867 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4868 double tmp = Bx[i];
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4869 if (tmp != 0.0)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4870 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4871 if (ii == x_nz)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4872 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4873 // Resize the sparse matrix
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4874 octave_idx_type sz = x_nz *
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4875 (b_nc - j) / b_nc;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4876 sz = (sz > 10 ? sz : 10) + x_nz;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4877 retval.change_capacity (sz);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4878 x_nz = sz;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4879 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4880 retval.xdata(ii) = tmp;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4881 retval.xridx(ii++) = i;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4882 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4883 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4884 retval.xcidx(j+1) = ii;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4885 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4886
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4887 retval.maybe_compress ();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4888 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4889 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4890 }
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	4891
5785 6b9cec830d72 [project @ 2006-05-03 19:32:46 by dbateman] dbateman parents: 5775 diff changeset	4892 if (typ == MatrixType::Banded)
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4893 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4894 // Create the storage for the banded form of the sparse matrix
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4895 octave_idx_type n_upper = mattype.nupper ();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4896 octave_idx_type n_lower = mattype.nlower ();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4897 octave_idx_type ldm = n_upper + 2 * n_lower + 1;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4898
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4899 Matrix m_band (ldm, nc);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4900 double *tmp_data = m_band.fortran_vec ();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4901
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4902 if (! mattype.is_dense ())
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4903 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4904 octave_idx_type ii = 0;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4905
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4906 for (octave_idx_type j = 0; j < ldm; j++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4907 for (octave_idx_type i = 0; i < nc; i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4908 tmp_data[ii++] = 0.;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4909 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4910
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4911 for (octave_idx_type j = 0; j < nc; j++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4912 for (octave_idx_type i = cidx(j); i < cidx(j+1); i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4913 m_band(ridx(i) - j + n_lower + n_upper, j) = data(i);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4914
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4915 // Calculate the norm of the matrix, for later use.
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4916 double anorm;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4917 if (calc_cond)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4918 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4919 for (octave_idx_type j = 0; j < nr; j++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4920 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4921 double atmp = 0.;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4922 for (octave_idx_type i = cidx(j); i < cidx(j+1); i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4923 atmp += fabs(data(i));
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4924 if (atmp > anorm)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4925 anorm = atmp;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4926 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4927 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4928
10350 12884915a8e4 merge MArray classes & improve Array interface Jaroslav Hajek <highegg@gmail.com> parents: 10314 diff changeset	4929 Array<octave_idx_type> ipvt (nr, 1);
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4930 octave_idx_type *pipvt = ipvt.fortran_vec ();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4931
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4932 F77_XFCN (dgbtrf, DGBTRF, (nr, nr, n_lower, n_upper, tmp_data,
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4933 ldm, pipvt, err));
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4934
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4935 if (err != 0)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4936 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4937 err = -2;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4938 rcond = 0.0;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4939
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4940 if (sing_handler)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4941 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4942 sing_handler (rcond);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4943 mattype.mark_as_rectangular ();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4944 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4945 else
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4946 (*current_liboctave_error_handler)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4947 ("matrix singular to machine precision");
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4948
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4949 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4950 else
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4951 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4952 if (calc_cond)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4953 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4954 char job = '1';
10350 12884915a8e4 merge MArray classes & improve Array interface Jaroslav Hajek <highegg@gmail.com> parents: 10314 diff changeset	4955 Array<double> z (3 * nr, 1);
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4956 double *pz = z.fortran_vec ();
10350 12884915a8e4 merge MArray classes & improve Array interface Jaroslav Hajek <highegg@gmail.com> parents: 10314 diff changeset	4957 Array<octave_idx_type> iz (nr, 1);
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4958 octave_idx_type *piz = iz.fortran_vec ();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4959
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4960 F77_XFCN (dgbcon, DGBCON,
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4961 (F77_CONST_CHAR_ARG2 (&job, 1),
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4962 nc, n_lower, n_upper, tmp_data, ldm, pipvt,
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4963 anorm, rcond, pz, piz, err
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4964 F77_CHAR_ARG_LEN (1)));
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4965
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4966 if (err != 0)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4967 err = -2;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4968
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4969 volatile double rcond_plus_one = rcond + 1.0;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4970
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4971 if (rcond_plus_one == 1.0 \|\| xisnan (rcond))
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4972 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4973 err = -2;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4974
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4975 if (sing_handler)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4976 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4977 sing_handler (rcond);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4978 mattype.mark_as_rectangular ();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4979 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4980 else
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4981 (*current_liboctave_error_handler)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4982 ("matrix singular to machine precision, rcond = %g",
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4983 rcond);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4984 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4985 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4986 else
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4987 rcond = 1.;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4988
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4989 if (err == 0)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4990 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4991 char job = 'N';
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4992 volatile octave_idx_type x_nz = b.nnz ();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4993 octave_idx_type b_nc = b.cols ();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4994 retval = SparseMatrix (nr, b_nc, x_nz);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4995 retval.xcidx(0) = 0;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4996 volatile octave_idx_type ii = 0;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4997
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4998 OCTAVE_LOCAL_BUFFER (double, work, nr);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	4999
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5000 for (volatile octave_idx_type j = 0; j < b_nc; j++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5001 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5002 for (octave_idx_type i = 0; i < nr; i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5003 work[i] = 0.;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5004 for (octave_idx_type i = b.cidx(j);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5005 i < b.cidx(j+1); i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5006 work[b.ridx(i)] = b.data(i);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5007
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5008 F77_XFCN (dgbtrs, DGBTRS,
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5009 (F77_CONST_CHAR_ARG2 (&job, 1),
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5010 nr, n_lower, n_upper, 1, tmp_data,
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5011 ldm, pipvt, work, b.rows (), err
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5012 F77_CHAR_ARG_LEN (1)));
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5013
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5014 // Count non-zeros in work vector and adjust
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5015 // space in retval if needed
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5016 octave_idx_type new_nnz = 0;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5017 for (octave_idx_type i = 0; i < nr; i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5018 if (work[i] != 0.)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5019 new_nnz++;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5020
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5021 if (ii + new_nnz > x_nz)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5022 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5023 // Resize the sparse matrix
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5024 octave_idx_type sz = new_nnz * (b_nc - j) + x_nz;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5025 retval.change_capacity (sz);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5026 x_nz = sz;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5027 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5028
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5029 for (octave_idx_type i = 0; i < nr; i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5030 if (work[i] != 0.)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5031 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5032 retval.xridx(ii) = i;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5033 retval.xdata(ii++) = work[i];
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5034 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5035 retval.xcidx(j+1) = ii;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5036 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5037
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5038 retval.maybe_compress ();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5039 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5040 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5041 }
5785 6b9cec830d72 [project @ 2006-05-03 19:32:46 by dbateman] dbateman parents: 5775 diff changeset	5042 else if (typ != MatrixType::Banded_Hermitian)
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5043 (*current_liboctave_error_handler) ("incorrect matrix type");
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	5044 }
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	5045
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	5046 return retval;
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	5047 }
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	5048
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	5049 ComplexMatrix
5785 6b9cec830d72 [project @ 2006-05-03 19:32:46 by dbateman] dbateman parents: 5775 diff changeset	5050 SparseMatrix::bsolve (MatrixType &mattype, const ComplexMatrix& b,
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5051 octave_idx_type& err, double& rcond,
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5052 solve_singularity_handler sing_handler,
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5053 bool calc_cond) const
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	5054 {
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	5055 ComplexMatrix retval;
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	5056
5275 23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe] jwe parents: 5261 diff changeset	5057 octave_idx_type nr = rows ();
23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe] jwe parents: 5261 diff changeset	5058 octave_idx_type nc = cols ();
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	5059 err = 0;
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	5060
6924 be176b7e110a [project @ 2007-09-25 19:08:19 by dbateman] dbateman parents: 6840 diff changeset	5061 if (nr != nc \|\| nr != b.rows ())
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	5062 (*current_liboctave_error_handler)
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	5063 ("matrix dimension mismatch solution of linear equations");
6924 be176b7e110a [project @ 2007-09-25 19:08:19 by dbateman] dbateman parents: 6840 diff changeset	5064 else if (nr == 0 \|\| b.cols () == 0)
be176b7e110a [project @ 2007-09-25 19:08:19 by dbateman] dbateman parents: 6840 diff changeset	5065 retval = ComplexMatrix (nc, b.cols (), Complex (0.0, 0.0));
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	5066 else
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	5067 {
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	5068 // Print spparms("spumoni") info if requested
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	5069 volatile int typ = mattype.type ();
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	5070 mattype.info ();
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	5071
5785 6b9cec830d72 [project @ 2006-05-03 19:32:46 by dbateman] dbateman parents: 5775 diff changeset	5072 if (typ == MatrixType::Banded_Hermitian)
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5073 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5074 octave_idx_type n_lower = mattype.nlower ();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5075 octave_idx_type ldm = n_lower + 1;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5076
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5077 Matrix m_band (ldm, nc);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5078 double *tmp_data = m_band.fortran_vec ();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5079
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5080 if (! mattype.is_dense ())
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5081 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5082 octave_idx_type ii = 0;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5083
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5084 for (octave_idx_type j = 0; j < ldm; j++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5085 for (octave_idx_type i = 0; i < nc; i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5086 tmp_data[ii++] = 0.;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5087 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5088
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5089 for (octave_idx_type j = 0; j < nc; j++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5090 for (octave_idx_type i = cidx(j); i < cidx(j+1); i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5091 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5092 octave_idx_type ri = ridx (i);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5093 if (ri >= j)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5094 m_band(ri - j, j) = data(i);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5095 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5096
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5097 // Calculate the norm of the matrix, for later use.
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5098 double anorm;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5099 if (calc_cond)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5100 anorm = m_band.abs().sum().row(0).max();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5101
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5102 char job = 'L';
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5103 F77_XFCN (dpbtrf, DPBTRF, (F77_CONST_CHAR_ARG2 (&job, 1),
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5104 nr, n_lower, tmp_data, ldm, err
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5105 F77_CHAR_ARG_LEN (1)));
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5106
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5107 if (err != 0)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5108 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5109 // Matrix is not positive definite!! Fall through to
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5110 // unsymmetric banded solver.
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5111 mattype.mark_as_unsymmetric ();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5112 typ = MatrixType::Banded;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5113 rcond = 0.0;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5114 err = 0;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5115 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5116 else
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5117 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5118 if (calc_cond)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5119 {
10350 12884915a8e4 merge MArray classes & improve Array interface Jaroslav Hajek <highegg@gmail.com> parents: 10314 diff changeset	5120 Array<double> z (3 * nr, 1);
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5121 double *pz = z.fortran_vec ();
10350 12884915a8e4 merge MArray classes & improve Array interface Jaroslav Hajek <highegg@gmail.com> parents: 10314 diff changeset	5122 Array<octave_idx_type> iz (nr, 1);
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5123 octave_idx_type *piz = iz.fortran_vec ();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5124
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5125 F77_XFCN (dpbcon, DPBCON,
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5126 (F77_CONST_CHAR_ARG2 (&job, 1),
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5127 nr, n_lower, tmp_data, ldm,
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5128 anorm, rcond, pz, piz, err
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5129 F77_CHAR_ARG_LEN (1)));
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5130
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5131 if (err != 0)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5132 err = -2;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5133
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5134 volatile double rcond_plus_one = rcond + 1.0;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5135
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5136 if (rcond_plus_one == 1.0 \|\| xisnan (rcond))
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5137 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5138 err = -2;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5139
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5140 if (sing_handler)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5141 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5142 sing_handler (rcond);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5143 mattype.mark_as_rectangular ();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5144 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5145 else
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5146 (*current_liboctave_error_handler)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5147 ("matrix singular to machine precision, rcond = %g",
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5148 rcond);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5149 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5150 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5151 else
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5152 rcond = 1.;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5153
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5154 if (err == 0)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5155 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5156 octave_idx_type b_nr = b.rows ();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5157 octave_idx_type b_nc = b.cols ();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5158
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5159 OCTAVE_LOCAL_BUFFER (double, Bx, b_nr);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5160 OCTAVE_LOCAL_BUFFER (double, Bz, b_nr);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5161
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5162 retval.resize (b_nr, b_nc);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5163
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5164 for (volatile octave_idx_type j = 0; j < b_nc; j++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5165 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5166 for (octave_idx_type i = 0; i < b_nr; i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5167 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5168 Complex c = b (i,j);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5169 Bx[i] = std::real (c);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5170 Bz[i] = std::imag (c);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5171 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5172
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5173 F77_XFCN (dpbtrs, DPBTRS,
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5174 (F77_CONST_CHAR_ARG2 (&job, 1),
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5175 nr, n_lower, 1, tmp_data,
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5176 ldm, Bx, b_nr, err
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5177 F77_CHAR_ARG_LEN (1)));
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5178
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5179 if (err != 0)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5180 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5181 (*current_liboctave_error_handler)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5182 ("SparseMatrix::solve solve failed");
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5183 err = -1;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5184 break;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5185 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5186
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5187 F77_XFCN (dpbtrs, DPBTRS,
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5188 (F77_CONST_CHAR_ARG2 (&job, 1),
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5189 nr, n_lower, 1, tmp_data,
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5190 ldm, Bz, b.rows(), err
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5191 F77_CHAR_ARG_LEN (1)));
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5192
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5193 if (err != 0)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5194 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5195 (*current_liboctave_error_handler)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5196 ("SparseMatrix::solve solve failed");
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5197 err = -1;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5198 break;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5199 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5200
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5201 for (octave_idx_type i = 0; i < b_nr; i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5202 retval (i, j) = Complex (Bx[i], Bz[i]);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5203 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5204 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5205 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5206 }
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	5207
5785 6b9cec830d72 [project @ 2006-05-03 19:32:46 by dbateman] dbateman parents: 5775 diff changeset	5208 if (typ == MatrixType::Banded)
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5209 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5210 // Create the storage for the banded form of the sparse matrix
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5211 octave_idx_type n_upper = mattype.nupper ();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5212 octave_idx_type n_lower = mattype.nlower ();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5213 octave_idx_type ldm = n_upper + 2 * n_lower + 1;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5214
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5215 Matrix m_band (ldm, nc);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5216 double *tmp_data = m_band.fortran_vec ();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5217
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5218 if (! mattype.is_dense ())
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5219 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5220 octave_idx_type ii = 0;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5221
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5222 for (octave_idx_type j = 0; j < ldm; j++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5223 for (octave_idx_type i = 0; i < nc; i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5224 tmp_data[ii++] = 0.;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5225 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5226
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5227 for (octave_idx_type j = 0; j < nc; j++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5228 for (octave_idx_type i = cidx(j); i < cidx(j+1); i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5229 m_band(ridx(i) - j + n_lower + n_upper, j) = data(i);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5230
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5231 // Calculate the norm of the matrix, for later use.
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5232 double anorm;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5233 if (calc_cond)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5234 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5235 for (octave_idx_type j = 0; j < nr; j++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5236 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5237 double atmp = 0.;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5238 for (octave_idx_type i = cidx(j); i < cidx(j+1); i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5239 atmp += fabs(data(i));
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5240 if (atmp > anorm)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5241 anorm = atmp;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5242 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5243 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5244
10350 12884915a8e4 merge MArray classes & improve Array interface Jaroslav Hajek <highegg@gmail.com> parents: 10314 diff changeset	5245 Array<octave_idx_type> ipvt (nr, 1);
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5246 octave_idx_type *pipvt = ipvt.fortran_vec ();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5247
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5248 F77_XFCN (dgbtrf, DGBTRF, (nr, nr, n_lower, n_upper, tmp_data,
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5249 ldm, pipvt, err));
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5250
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5251 if (err != 0)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5252 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5253 err = -2;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5254 rcond = 0.0;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5255
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5256 if (sing_handler)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5257 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5258 sing_handler (rcond);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5259 mattype.mark_as_rectangular ();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5260 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5261 else
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5262 (*current_liboctave_error_handler)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5263 ("matrix singular to machine precision");
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5264
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5265 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5266 else
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5267 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5268 if (calc_cond)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5269 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5270 char job = '1';
10350 12884915a8e4 merge MArray classes & improve Array interface Jaroslav Hajek <highegg@gmail.com> parents: 10314 diff changeset	5271 Array<double> z (3 * nr, 1);
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5272 double *pz = z.fortran_vec ();
10350 12884915a8e4 merge MArray classes & improve Array interface Jaroslav Hajek <highegg@gmail.com> parents: 10314 diff changeset	5273 Array<octave_idx_type> iz (nr, 1);
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5274 octave_idx_type *piz = iz.fortran_vec ();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5275
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5276 F77_XFCN (dpbcon, DPBCON,
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5277 (F77_CONST_CHAR_ARG2 (&job, 1),
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5278 nr, n_lower, tmp_data, ldm,
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5279 anorm, rcond, pz, piz, err
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5280 F77_CHAR_ARG_LEN (1)));
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5281
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5282 if (err != 0)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5283 err = -2;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5284
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5285 volatile double rcond_plus_one = rcond + 1.0;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5286
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5287 if (rcond_plus_one == 1.0 \|\| xisnan (rcond))
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5288 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5289 err = -2;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5290
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5291 if (sing_handler)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5292 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5293 sing_handler (rcond);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5294 mattype.mark_as_rectangular ();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5295 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5296 else
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5297 (*current_liboctave_error_handler)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5298 ("matrix singular to machine precision, rcond = %g",
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5299 rcond);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5300 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5301 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5302 else
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5303 rcond = 1.;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5304
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5305 if (err == 0)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5306 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5307 char job = 'N';
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5308 octave_idx_type b_nc = b.cols ();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5309 retval.resize (nr,b_nc);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5310
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5311 OCTAVE_LOCAL_BUFFER (double, Bz, nr);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5312 OCTAVE_LOCAL_BUFFER (double, Bx, nr);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5313
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5314 for (volatile octave_idx_type j = 0; j < b_nc; j++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5315 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5316 for (octave_idx_type i = 0; i < nr; i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5317 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5318 Complex c = b (i, j);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5319 Bx[i] = std::real (c);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5320 Bz[i] = std::imag (c);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5321 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5322
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5323 F77_XFCN (dgbtrs, DGBTRS,
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5324 (F77_CONST_CHAR_ARG2 (&job, 1),
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5325 nr, n_lower, n_upper, 1, tmp_data,
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5326 ldm, pipvt, Bx, b.rows (), err
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5327 F77_CHAR_ARG_LEN (1)));
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5328
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5329 F77_XFCN (dgbtrs, DGBTRS,
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5330 (F77_CONST_CHAR_ARG2 (&job, 1),
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5331 nr, n_lower, n_upper, 1, tmp_data,
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5332 ldm, pipvt, Bz, b.rows (), err
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5333 F77_CHAR_ARG_LEN (1)));
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5334
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5335 for (octave_idx_type i = 0; i < nr; i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5336 retval (i, j) = Complex (Bx[i], Bz[i]);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5337 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5338 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5339 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5340 }
5785 6b9cec830d72 [project @ 2006-05-03 19:32:46 by dbateman] dbateman parents: 5775 diff changeset	5341 else if (typ != MatrixType::Banded_Hermitian)
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5342 (*current_liboctave_error_handler) ("incorrect matrix type");
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	5343 }
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	5344
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	5345 return retval;
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	5346 }
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	5347
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	5348 SparseComplexMatrix
5785 6b9cec830d72 [project @ 2006-05-03 19:32:46 by dbateman] dbateman parents: 5775 diff changeset	5349 SparseMatrix::bsolve (MatrixType &mattype, const SparseComplexMatrix& b,
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5350 octave_idx_type& err, double& rcond,
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5351 solve_singularity_handler sing_handler,
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5352 bool calc_cond) const
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	5353 {
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	5354 SparseComplexMatrix retval;
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	5355
5275 23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe] jwe parents: 5261 diff changeset	5356 octave_idx_type nr = rows ();
23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe] jwe parents: 5261 diff changeset	5357 octave_idx_type nc = cols ();
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	5358 err = 0;
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	5359
6924 be176b7e110a [project @ 2007-09-25 19:08:19 by dbateman] dbateman parents: 6840 diff changeset	5360 if (nr != nc \|\| nr != b.rows ())
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	5361 (*current_liboctave_error_handler)
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	5362 ("matrix dimension mismatch solution of linear equations");
6924 be176b7e110a [project @ 2007-09-25 19:08:19 by dbateman] dbateman parents: 6840 diff changeset	5363 else if (nr == 0 \|\| b.cols () == 0)
be176b7e110a [project @ 2007-09-25 19:08:19 by dbateman] dbateman parents: 6840 diff changeset	5364 retval = SparseComplexMatrix (nc, b.cols ());
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	5365 else
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	5366 {
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	5367 // Print spparms("spumoni") info if requested
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	5368 volatile int typ = mattype.type ();
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	5369 mattype.info ();
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	5370
5785 6b9cec830d72 [project @ 2006-05-03 19:32:46 by dbateman] dbateman parents: 5775 diff changeset	5371 if (typ == MatrixType::Banded_Hermitian)
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5372 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5373 octave_idx_type n_lower = mattype.nlower ();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5374 octave_idx_type ldm = n_lower + 1;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5375
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5376 Matrix m_band (ldm, nc);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5377 double *tmp_data = m_band.fortran_vec ();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5378
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5379 if (! mattype.is_dense ())
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5380 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5381 octave_idx_type ii = 0;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5382
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5383 for (octave_idx_type j = 0; j < ldm; j++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5384 for (octave_idx_type i = 0; i < nc; i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5385 tmp_data[ii++] = 0.;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5386 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5387
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5388 for (octave_idx_type j = 0; j < nc; j++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5389 for (octave_idx_type i = cidx(j); i < cidx(j+1); i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5390 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5391 octave_idx_type ri = ridx (i);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5392 if (ri >= j)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5393 m_band(ri - j, j) = data(i);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5394 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5395
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5396 // Calculate the norm of the matrix, for later use.
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5397 double anorm;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5398 if (calc_cond)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5399 anorm = m_band.abs().sum().row(0).max();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5400
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5401 char job = 'L';
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5402 F77_XFCN (dpbtrf, DPBTRF, (F77_CONST_CHAR_ARG2 (&job, 1),
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5403 nr, n_lower, tmp_data, ldm, err
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5404 F77_CHAR_ARG_LEN (1)));
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5405
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5406 if (err != 0)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5407 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5408 // Matrix is not positive definite!! Fall through to
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5409 // unsymmetric banded solver.
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5410 mattype.mark_as_unsymmetric ();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5411 typ = MatrixType::Banded;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5412
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5413 rcond = 0.0;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5414 err = 0;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5415 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5416 else
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5417 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5418 if (calc_cond)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5419 {
10350 12884915a8e4 merge MArray classes & improve Array interface Jaroslav Hajek <highegg@gmail.com> parents: 10314 diff changeset	5420 Array<double> z (3 * nr, 1);
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5421 double *pz = z.fortran_vec ();
10350 12884915a8e4 merge MArray classes & improve Array interface Jaroslav Hajek <highegg@gmail.com> parents: 10314 diff changeset	5422 Array<octave_idx_type> iz (nr, 1);
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5423 octave_idx_type *piz = iz.fortran_vec ();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5424
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5425 F77_XFCN (dpbcon, DPBCON,
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5426 (F77_CONST_CHAR_ARG2 (&job, 1),
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5427 nr, n_lower, tmp_data, ldm,
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5428 anorm, rcond, pz, piz, err
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5429 F77_CHAR_ARG_LEN (1)));
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5430
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5431 if (err != 0)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5432 err = -2;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5433
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5434 volatile double rcond_plus_one = rcond + 1.0;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5435
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5436 if (rcond_plus_one == 1.0 \|\| xisnan (rcond))
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5437 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5438 err = -2;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5439
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5440 if (sing_handler)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5441 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5442 sing_handler (rcond);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5443 mattype.mark_as_rectangular ();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5444 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5445 else
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5446 (*current_liboctave_error_handler)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5447 ("matrix singular to machine precision, rcond = %g",
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5448 rcond);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5449 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5450 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5451 else
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5452 rcond = 1.;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5453
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5454 if (err == 0)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5455 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5456 octave_idx_type b_nr = b.rows ();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5457 octave_idx_type b_nc = b.cols ();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5458 OCTAVE_LOCAL_BUFFER (double, Bx, b_nr);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5459 OCTAVE_LOCAL_BUFFER (double, Bz, b_nr);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5460
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5461 // Take a first guess that the number of non-zero terms
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5462 // will be as many as in b
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5463 volatile octave_idx_type x_nz = b.nnz ();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5464 volatile octave_idx_type ii = 0;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5465 retval = SparseComplexMatrix (b_nr, b_nc, x_nz);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5466
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5467 retval.xcidx(0) = 0;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5468 for (volatile octave_idx_type j = 0; j < b_nc; j++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5469 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5470
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5471 for (octave_idx_type i = 0; i < b_nr; i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5472 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5473 Complex c = b (i,j);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5474 Bx[i] = std::real (c);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5475 Bz[i] = std::imag (c);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5476 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5477
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5478 F77_XFCN (dpbtrs, DPBTRS,
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5479 (F77_CONST_CHAR_ARG2 (&job, 1),
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5480 nr, n_lower, 1, tmp_data,
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5481 ldm, Bx, b_nr, err
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5482 F77_CHAR_ARG_LEN (1)));
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5483
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5484 if (err != 0)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5485 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5486 (*current_liboctave_error_handler)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5487 ("SparseMatrix::solve solve failed");
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5488 err = -1;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5489 break;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5490 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5491
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5492 F77_XFCN (dpbtrs, DPBTRS,
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5493 (F77_CONST_CHAR_ARG2 (&job, 1),
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5494 nr, n_lower, 1, tmp_data,
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5495 ldm, Bz, b_nr, err
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5496 F77_CHAR_ARG_LEN (1)));
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5497
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5498 if (err != 0)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5499 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5500 (*current_liboctave_error_handler)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5501 ("SparseMatrix::solve solve failed");
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5502
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5503 err = -1;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5504 break;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5505 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5506
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5507 // Count non-zeros in work vector and adjust
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5508 // space in retval if needed
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5509 octave_idx_type new_nnz = 0;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5510 for (octave_idx_type i = 0; i < nr; i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5511 if (Bx[i] != 0. \|\| Bz[i] != 0.)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5512 new_nnz++;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5513
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5514 if (ii + new_nnz > x_nz)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5515 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5516 // Resize the sparse matrix
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5517 octave_idx_type sz = new_nnz * (b_nc - j) + x_nz;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5518 retval.change_capacity (sz);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5519 x_nz = sz;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5520 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5521
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5522 for (octave_idx_type i = 0; i < nr; i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5523 if (Bx[i] != 0. \|\| Bz[i] != 0.)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5524 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5525 retval.xridx(ii) = i;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5526 retval.xdata(ii++) =
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5527 Complex (Bx[i], Bz[i]);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5528 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5529
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5530 retval.xcidx(j+1) = ii;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5531 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5532
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5533 retval.maybe_compress ();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5534 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5535 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5536 }
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	5537
5785 6b9cec830d72 [project @ 2006-05-03 19:32:46 by dbateman] dbateman parents: 5775 diff changeset	5538 if (typ == MatrixType::Banded)
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5539 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5540 // Create the storage for the banded form of the sparse matrix
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5541 octave_idx_type n_upper = mattype.nupper ();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5542 octave_idx_type n_lower = mattype.nlower ();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5543 octave_idx_type ldm = n_upper + 2 * n_lower + 1;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5544
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5545 Matrix m_band (ldm, nc);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5546 double *tmp_data = m_band.fortran_vec ();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5547
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5548 if (! mattype.is_dense ())
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5549 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5550 octave_idx_type ii = 0;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5551
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5552 for (octave_idx_type j = 0; j < ldm; j++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5553 for (octave_idx_type i = 0; i < nc; i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5554 tmp_data[ii++] = 0.;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5555 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5556
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5557 for (octave_idx_type j = 0; j < nc; j++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5558 for (octave_idx_type i = cidx(j); i < cidx(j+1); i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5559 m_band(ridx(i) - j + n_lower + n_upper, j) = data(i);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5560
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5561 // Calculate the norm of the matrix, for later use.
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5562 double anorm;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5563 if (calc_cond)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5564 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5565 for (octave_idx_type j = 0; j < nr; j++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5566 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5567 double atmp = 0.;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5568 for (octave_idx_type i = cidx(j); i < cidx(j+1); i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5569 atmp += fabs(data(i));
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5570 if (atmp > anorm)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5571 anorm = atmp;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5572 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5573 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5574
10350 12884915a8e4 merge MArray classes & improve Array interface Jaroslav Hajek <highegg@gmail.com> parents: 10314 diff changeset	5575 Array<octave_idx_type> ipvt (nr, 1);
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5576 octave_idx_type *pipvt = ipvt.fortran_vec ();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5577
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5578 F77_XFCN (dgbtrf, DGBTRF, (nr, nr, n_lower, n_upper, tmp_data,
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5579 ldm, pipvt, err));
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5580
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5581 if (err != 0)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5582 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5583 err = -2;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5584 rcond = 0.0;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5585
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5586 if (sing_handler)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5587 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5588 sing_handler (rcond);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5589 mattype.mark_as_rectangular ();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5590 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5591 else
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5592 (*current_liboctave_error_handler)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5593 ("matrix singular to machine precision");
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5594
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5595 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5596 else
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5597 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5598 if (calc_cond)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5599 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5600 char job = '1';
10350 12884915a8e4 merge MArray classes & improve Array interface Jaroslav Hajek <highegg@gmail.com> parents: 10314 diff changeset	5601 Array<double> z (3 * nr, 1);
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5602 double *pz = z.fortran_vec ();
10350 12884915a8e4 merge MArray classes & improve Array interface Jaroslav Hajek <highegg@gmail.com> parents: 10314 diff changeset	5603 Array<octave_idx_type> iz (nr, 1);
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5604 octave_idx_type *piz = iz.fortran_vec ();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5605
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5606 F77_XFCN (dgbcon, DGBCON,
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5607 (F77_CONST_CHAR_ARG2 (&job, 1),
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5608 nc, n_lower, n_upper, tmp_data, ldm, pipvt,
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5609 anorm, rcond, pz, piz, err
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5610 F77_CHAR_ARG_LEN (1)));
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5611
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5612 if (err != 0)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5613 err = -2;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5614
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5615 volatile double rcond_plus_one = rcond + 1.0;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5616
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5617 if (rcond_plus_one == 1.0 \|\| xisnan (rcond))
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5618 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5619 err = -2;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5620
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5621 if (sing_handler)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5622 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5623 sing_handler (rcond);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5624 mattype.mark_as_rectangular ();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5625 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5626 else
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5627 (*current_liboctave_error_handler)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5628 ("matrix singular to machine precision, rcond = %g",
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5629 rcond);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5630 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5631 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5632 else
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5633 rcond = 1.;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5634
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5635 if (err == 0)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5636 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5637 char job = 'N';
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5638 volatile octave_idx_type x_nz = b.nnz ();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5639 octave_idx_type b_nc = b.cols ();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5640 retval = SparseComplexMatrix (nr, b_nc, x_nz);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5641 retval.xcidx(0) = 0;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5642 volatile octave_idx_type ii = 0;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5643
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5644 OCTAVE_LOCAL_BUFFER (double, Bx, nr);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5645 OCTAVE_LOCAL_BUFFER (double, Bz, nr);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5646
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5647 for (volatile octave_idx_type j = 0; j < b_nc; j++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5648 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5649 for (octave_idx_type i = 0; i < nr; i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5650 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5651 Bx[i] = 0.;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5652 Bz[i] = 0.;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5653 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5654 for (octave_idx_type i = b.cidx(j);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5655 i < b.cidx(j+1); i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5656 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5657 Complex c = b.data(i);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5658 Bx[b.ridx(i)] = std::real (c);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5659 Bz[b.ridx(i)] = std::imag (c);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5660 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5661
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5662 F77_XFCN (dgbtrs, DGBTRS,
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5663 (F77_CONST_CHAR_ARG2 (&job, 1),
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5664 nr, n_lower, n_upper, 1, tmp_data,
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5665 ldm, pipvt, Bx, b.rows (), err
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5666 F77_CHAR_ARG_LEN (1)));
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5667
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5668 F77_XFCN (dgbtrs, DGBTRS,
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5669 (F77_CONST_CHAR_ARG2 (&job, 1),
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5670 nr, n_lower, n_upper, 1, tmp_data,
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5671 ldm, pipvt, Bz, b.rows (), err
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5672 F77_CHAR_ARG_LEN (1)));
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5673
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5674 // Count non-zeros in work vector and adjust
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5675 // space in retval if needed
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5676 octave_idx_type new_nnz = 0;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5677 for (octave_idx_type i = 0; i < nr; i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5678 if (Bx[i] != 0. \|\| Bz[i] != 0.)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5679 new_nnz++;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5680
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5681 if (ii + new_nnz > x_nz)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5682 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5683 // Resize the sparse matrix
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5684 octave_idx_type sz = new_nnz * (b_nc - j) + x_nz;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5685 retval.change_capacity (sz);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5686 x_nz = sz;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5687 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5688
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5689 for (octave_idx_type i = 0; i < nr; i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5690 if (Bx[i] != 0. \|\| Bz[i] != 0.)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5691 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5692 retval.xridx(ii) = i;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5693 retval.xdata(ii++) =
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5694 Complex (Bx[i], Bz[i]);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5695 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5696 retval.xcidx(j+1) = ii;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5697 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5698
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5699 retval.maybe_compress ();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5700 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5701 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5702 }
5785 6b9cec830d72 [project @ 2006-05-03 19:32:46 by dbateman] dbateman parents: 5775 diff changeset	5703 else if (typ != MatrixType::Banded_Hermitian)
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5704 (*current_liboctave_error_handler) ("incorrect matrix type");
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	5705 }
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	5706
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	5707 return retval;
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	5708 }
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	5709
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	5710 void *
5681 233d98d95659 [project @ 2006-03-16 17:48:55 by dbateman] dbateman parents: 5630 diff changeset	5711 SparseMatrix::factorize (octave_idx_type& err, double &rcond, Matrix &Control,
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5712 Matrix &Info, solve_singularity_handler sing_handler,
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5713 bool calc_cond) const
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	5714 {
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	5715 // The return values
5404 b91241999ba6 [project @ 2005-07-07 17:05:19 by jwe] jwe parents: 5389 diff changeset	5716 void *Numeric = 0;
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	5717 err = 0;
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	5718
5203 dbeafbc0ff64 [project @ 2005-03-15 00:58:55 by jwe] jwe parents: 5164 diff changeset	5719 #ifdef HAVE_UMFPACK
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	5720 // Setup the control parameters
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	5721 Control = Matrix (UMFPACK_CONTROL, 1);
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	5722 double *control = Control.fortran_vec ();
5322 22994a5730f9 [project @ 2005-04-29 13:04:24 by dbateman] dbateman parents: 5307 diff changeset	5723 UMFPACK_DNAME (defaults) (control);
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	5724
5893 d73ffe42f2c8 [project @ 2006-07-16 07:48:19 by jwe] jwe parents: 5877 diff changeset	5725 double tmp = octave_sparse_params::get_key ("spumoni");
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	5726 if (!xisnan (tmp))
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	5727 Control (UMFPACK_PRL) = tmp;
5893 d73ffe42f2c8 [project @ 2006-07-16 07:48:19 by jwe] jwe parents: 5877 diff changeset	5728 tmp = octave_sparse_params::get_key ("piv_tol");
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	5729 if (!xisnan (tmp))
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	5730 {
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	5731 Control (UMFPACK_SYM_PIVOT_TOLERANCE) = tmp;
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	5732 Control (UMFPACK_PIVOT_TOLERANCE) = tmp;
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	5733 }
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	5734
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	5735 // Set whether we are allowed to modify Q or not
5893 d73ffe42f2c8 [project @ 2006-07-16 07:48:19 by jwe] jwe parents: 5877 diff changeset	5736 tmp = octave_sparse_params::get_key ("autoamd");
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	5737 if (!xisnan (tmp))
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	5738 Control (UMFPACK_FIXQ) = tmp;
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	5739
5322 22994a5730f9 [project @ 2005-04-29 13:04:24 by dbateman] dbateman parents: 5307 diff changeset	5740 UMFPACK_DNAME (report_control) (control);
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	5741
5275 23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe] jwe parents: 5261 diff changeset	5742 const octave_idx_type *Ap = cidx ();
23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe] jwe parents: 5261 diff changeset	5743 const octave_idx_type *Ai = ridx ();
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	5744 const double *Ax = data ();
5275 23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe] jwe parents: 5261 diff changeset	5745 octave_idx_type nr = rows ();
23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe] jwe parents: 5261 diff changeset	5746 octave_idx_type nc = cols ();
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	5747
5322 22994a5730f9 [project @ 2005-04-29 13:04:24 by dbateman] dbateman parents: 5307 diff changeset	5748 UMFPACK_DNAME (report_matrix) (nr, nc, Ap, Ai, Ax, 1, control);
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	5749
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	5750 void *Symbolic;
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	5751 Info = Matrix (1, UMFPACK_INFO);
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	5752 double *info = Info.fortran_vec ();
7520 b166043585a8 use 0 instead of NULL John W. Eaton <jwe@octave.org> parents: 7515 diff changeset	5753 int status = UMFPACK_DNAME (qsymbolic) (nr, nc, Ap, Ai, Ax, 0,
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5754 &Symbolic, control, info);
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	5755
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	5756 if (status < 0)
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	5757 {
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	5758 (*current_liboctave_error_handler)
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5759 ("SparseMatrix::solve symbolic factorization failed");
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	5760 err = -1;
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	5761
5322 22994a5730f9 [project @ 2005-04-29 13:04:24 by dbateman] dbateman parents: 5307 diff changeset	5762 UMFPACK_DNAME (report_status) (control, status);
22994a5730f9 [project @ 2005-04-29 13:04:24 by dbateman] dbateman parents: 5307 diff changeset	5763 UMFPACK_DNAME (report_info) (control, info);
22994a5730f9 [project @ 2005-04-29 13:04:24 by dbateman] dbateman parents: 5307 diff changeset	5764
22994a5730f9 [project @ 2005-04-29 13:04:24 by dbateman] dbateman parents: 5307 diff changeset	5765 UMFPACK_DNAME (free_symbolic) (&Symbolic) ;
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	5766 }
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	5767 else
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	5768 {
5322 22994a5730f9 [project @ 2005-04-29 13:04:24 by dbateman] dbateman parents: 5307 diff changeset	5769 UMFPACK_DNAME (report_symbolic) (Symbolic, control);
22994a5730f9 [project @ 2005-04-29 13:04:24 by dbateman] dbateman parents: 5307 diff changeset	5770
22994a5730f9 [project @ 2005-04-29 13:04:24 by dbateman] dbateman parents: 5307 diff changeset	5771 status = UMFPACK_DNAME (numeric) (Ap, Ai, Ax, Symbolic,
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5772 &Numeric, control, info) ;
5322 22994a5730f9 [project @ 2005-04-29 13:04:24 by dbateman] dbateman parents: 5307 diff changeset	5773 UMFPACK_DNAME (free_symbolic) (&Symbolic) ;
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	5774
5681 233d98d95659 [project @ 2006-03-16 17:48:55 by dbateman] dbateman parents: 5630 diff changeset	5775 if (calc_cond)
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5776 rcond = Info (UMFPACK_RCOND);
5681 233d98d95659 [project @ 2006-03-16 17:48:55 by dbateman] dbateman parents: 5630 diff changeset	5777 else
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5778 rcond = 1.;
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	5779 volatile double rcond_plus_one = rcond + 1.0;
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	5780
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	5781 if (status == UMFPACK_WARNING_singular_matrix \|\|
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5782 rcond_plus_one == 1.0 \|\| xisnan (rcond))
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5783 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5784 UMFPACK_DNAME (report_numeric) (Numeric, control);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5785
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5786 err = -2;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5787
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5788 if (sing_handler)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5789 sing_handler (rcond);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5790 else
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5791 (*current_liboctave_error_handler)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5792 ("SparseMatrix::solve matrix singular to machine precision, rcond = %g",
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5793 rcond);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5794
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5795 }
5610 9761b7d24e9e [project @ 2006-02-09 09:12:02 by dbateman] dbateman parents: 5604 diff changeset	5796 else if (status < 0)
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5797 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5798 (*current_liboctave_error_handler)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5799 ("SparseMatrix::solve numeric factorization failed");
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5800
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5801 UMFPACK_DNAME (report_status) (control, status);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5802 UMFPACK_DNAME (report_info) (control, info);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5803
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5804 err = -1;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5805 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5806 else
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5807 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5808 UMFPACK_DNAME (report_numeric) (Numeric, control);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5809 }
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	5810 }
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	5811
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	5812 if (err != 0)
5322 22994a5730f9 [project @ 2005-04-29 13:04:24 by dbateman] dbateman parents: 5307 diff changeset	5813 UMFPACK_DNAME (free_numeric) (&Numeric);
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	5814
5203 dbeafbc0ff64 [project @ 2005-03-15 00:58:55 by jwe] jwe parents: 5164 diff changeset	5815 #else
dbeafbc0ff64 [project @ 2005-03-15 00:58:55 by jwe] jwe parents: 5164 diff changeset	5816 (*current_liboctave_error_handler) ("UMFPACK not installed");
dbeafbc0ff64 [project @ 2005-03-15 00:58:55 by jwe] jwe parents: 5164 diff changeset	5817 #endif
dbeafbc0ff64 [project @ 2005-03-15 00:58:55 by jwe] jwe parents: 5164 diff changeset	5818
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	5819 return Numeric;
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	5820 }
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	5821
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	5822 Matrix
5785 6b9cec830d72 [project @ 2006-05-03 19:32:46 by dbateman] dbateman parents: 5775 diff changeset	5823 SparseMatrix::fsolve (MatrixType &mattype, const Matrix& b,
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5824 octave_idx_type& err, double& rcond,
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5825 solve_singularity_handler sing_handler,
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5826 bool calc_cond) const
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	5827 {
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	5828 Matrix retval;
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	5829
5275 23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe] jwe parents: 5261 diff changeset	5830 octave_idx_type nr = rows ();
23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe] jwe parents: 5261 diff changeset	5831 octave_idx_type nc = cols ();
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	5832 err = 0;
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	5833
6924 be176b7e110a [project @ 2007-09-25 19:08:19 by dbateman] dbateman parents: 6840 diff changeset	5834 if (nr != nc \|\| nr != b.rows ())
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	5835 (*current_liboctave_error_handler)
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	5836 ("matrix dimension mismatch solution of linear equations");
6924 be176b7e110a [project @ 2007-09-25 19:08:19 by dbateman] dbateman parents: 6840 diff changeset	5837 else if (nr == 0 \|\| b.cols () == 0)
be176b7e110a [project @ 2007-09-25 19:08:19 by dbateman] dbateman parents: 6840 diff changeset	5838 retval = Matrix (nc, b.cols (), 0.0);
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	5839 else
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	5840 {
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	5841 // Print spparms("spumoni") info if requested
5506 b4cfbb0ec8c4 [project @ 2005-10-23 19:09:32 by dbateman] dbateman parents: 5451 diff changeset	5842 volatile int typ = mattype.type ();
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	5843 mattype.info ();
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	5844
5785 6b9cec830d72 [project @ 2006-05-03 19:32:46 by dbateman] dbateman parents: 5775 diff changeset	5845 if (typ == MatrixType::Hermitian)
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5846 {
5506 b4cfbb0ec8c4 [project @ 2005-10-23 19:09:32 by dbateman] dbateman parents: 5451 diff changeset	5847 #ifdef HAVE_CHOLMOD
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5848 cholmod_common Common;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5849 cholmod_common *cm = &Common;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5850
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5851 // Setup initial parameters
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5852 CHOLMOD_NAME(start) (cm);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5853 cm->prefer_zomplex = false;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5854
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5855 double spu = octave_sparse_params::get_key ("spumoni");
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5856 if (spu == 0.)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5857 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5858 cm->print = -1;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5859 cm->print_function = 0;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5860 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5861 else
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5862 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5863 cm->print = static_cast<int> (spu) + 2;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5864 cm->print_function =&SparseCholPrint;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5865 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5866
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5867 cm->error_handler = &SparseCholError;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5868 cm->complex_divide = CHOLMOD_NAME(divcomplex);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5869 cm->hypotenuse = CHOLMOD_NAME(hypot);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5870
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5871 cm->final_ll = true;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5872
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5873 cholmod_sparse Astore;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5874 cholmod_sparse *A = &Astore;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5875 double dummy;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5876 A->nrow = nr;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5877 A->ncol = nc;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5878
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5879 A->p = cidx();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5880 A->i = ridx();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5881 A->nzmax = nnz();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5882 A->packed = true;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5883 A->sorted = true;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5884 A->nz = 0;
5506 b4cfbb0ec8c4 [project @ 2005-10-23 19:09:32 by dbateman] dbateman parents: 5451 diff changeset	5885 #ifdef IDX_TYPE_LONG
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5886 A->itype = CHOLMOD_LONG;
5506 b4cfbb0ec8c4 [project @ 2005-10-23 19:09:32 by dbateman] dbateman parents: 5451 diff changeset	5887 #else
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5888 A->itype = CHOLMOD_INT;
5506 b4cfbb0ec8c4 [project @ 2005-10-23 19:09:32 by dbateman] dbateman parents: 5451 diff changeset	5889 #endif
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5890 A->dtype = CHOLMOD_DOUBLE;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5891 A->stype = 1;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5892 A->xtype = CHOLMOD_REAL;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5893
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5894 if (nr < 1)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5895 A->x = &dummy;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5896 else
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5897 A->x = data();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5898
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5899 cholmod_dense Bstore;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5900 cholmod_dense *B = &Bstore;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5901 B->nrow = b.rows();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5902 B->ncol = b.cols();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5903 B->d = B->nrow;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5904 B->nzmax = B->nrow * B->ncol;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5905 B->dtype = CHOLMOD_DOUBLE;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5906 B->xtype = CHOLMOD_REAL;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5907 if (nc < 1 \|\| b.cols() < 1)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5908 B->x = &dummy;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5909 else
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5910 // We won't alter it, honest :-)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5911 B->x = const_cast<double *>(b.fortran_vec());
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5912
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5913 cholmod_factor *L;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5914 BEGIN_INTERRUPT_IMMEDIATELY_IN_FOREIGN_CODE;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5915 L = CHOLMOD_NAME(analyze) (A, cm);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5916 CHOLMOD_NAME(factorize) (A, L, cm);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5917 if (calc_cond)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5918 rcond = CHOLMOD_NAME(rcond)(L, cm);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5919 else
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5920 rcond = 1.0;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5921
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5922 END_INTERRUPT_IMMEDIATELY_IN_FOREIGN_CODE;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5923
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5924 if (rcond == 0.0)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5925 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5926 // Either its indefinite or singular. Try UMFPACK
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5927 mattype.mark_as_unsymmetric ();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5928 typ = MatrixType::Full;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5929 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5930 else
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5931 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5932 volatile double rcond_plus_one = rcond + 1.0;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5933
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5934 if (rcond_plus_one == 1.0 \|\| xisnan (rcond))
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5935 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5936 err = -2;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5937
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5938 if (sing_handler)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5939 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5940 sing_handler (rcond);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5941 mattype.mark_as_rectangular ();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5942 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5943 else
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5944 (*current_liboctave_error_handler)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5945 ("SparseMatrix::solve matrix singular to machine precision, rcond = %g",
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5946 rcond);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5947
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5948 return retval;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5949 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5950
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5951 cholmod_dense *X;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5952 BEGIN_INTERRUPT_IMMEDIATELY_IN_FOREIGN_CODE;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5953 X = CHOLMOD_NAME(solve) (CHOLMOD_A, L, B, cm);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5954 END_INTERRUPT_IMMEDIATELY_IN_FOREIGN_CODE;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5955
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5956 retval.resize (b.rows (), b.cols());
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5957 for (octave_idx_type j = 0; j < b.cols(); j++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5958 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5959 octave_idx_type jr = j * b.rows();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5960 for (octave_idx_type i = 0; i < b.rows(); i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5961 retval.xelem(i,j) = static_cast<double *>(X->x)[jr + i];
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5962 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5963
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5964 BEGIN_INTERRUPT_IMMEDIATELY_IN_FOREIGN_CODE;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5965 CHOLMOD_NAME(free_dense) (&X, cm);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5966 CHOLMOD_NAME(free_factor) (&L, cm);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5967 CHOLMOD_NAME(finish) (cm);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5968 static char tmp[] = " ";
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5969 CHOLMOD_NAME(print_common) (tmp, cm);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5970 END_INTERRUPT_IMMEDIATELY_IN_FOREIGN_CODE;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5971 }
5506 b4cfbb0ec8c4 [project @ 2005-10-23 19:09:32 by dbateman] dbateman parents: 5451 diff changeset	5972 #else
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5973 (*current_liboctave_warning_handler)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5974 ("CHOLMOD not installed");
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5975
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5976 mattype.mark_as_unsymmetric ();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5977 typ = MatrixType::Full;
5506 b4cfbb0ec8c4 [project @ 2005-10-23 19:09:32 by dbateman] dbateman parents: 5451 diff changeset	5978 #endif
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5979 }
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	5980
5785 6b9cec830d72 [project @ 2006-05-03 19:32:46 by dbateman] dbateman parents: 5775 diff changeset	5981 if (typ == MatrixType::Full)
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5982 {
5203 dbeafbc0ff64 [project @ 2005-03-15 00:58:55 by jwe] jwe parents: 5164 diff changeset	5983 #ifdef HAVE_UMFPACK
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5984 Matrix Control, Info;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5985 void *Numeric =
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5986 factorize (err, rcond, Control, Info, sing_handler, calc_cond);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5987
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5988 if (err == 0)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5989 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5990 const double *Bx = b.fortran_vec ();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5991 retval.resize (b.rows (), b.cols());
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5992 double *result = retval.fortran_vec ();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5993 octave_idx_type b_nr = b.rows ();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5994 octave_idx_type b_nc = b.cols ();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5995 int status = 0;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5996 double *control = Control.fortran_vec ();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5997 double *info = Info.fortran_vec ();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5998 const octave_idx_type *Ap = cidx ();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	5999 const octave_idx_type *Ai = ridx ();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6000 const double *Ax = data ();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6001
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6002 for (octave_idx_type j = 0, iidx = 0; j < b_nc; j++, iidx += b_nr)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6003 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6004 status = UMFPACK_DNAME (solve) (UMFPACK_A, Ap,
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6005 Ai, Ax, &result[iidx], &Bx[iidx],
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6006 Numeric, control, info);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6007 if (status < 0)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6008 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6009 (*current_liboctave_error_handler)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6010 ("SparseMatrix::solve solve failed");
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6011
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6012 UMFPACK_DNAME (report_status) (control, status);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6013
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6014 err = -1;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6015
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6016 break;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6017 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6018 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6019
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6020 UMFPACK_DNAME (report_info) (control, info);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6021
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6022 UMFPACK_DNAME (free_numeric) (&Numeric);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6023 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6024 else
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6025 mattype.mark_as_rectangular ();
5681 233d98d95659 [project @ 2006-03-16 17:48:55 by dbateman] dbateman parents: 5630 diff changeset	6026
5203 dbeafbc0ff64 [project @ 2005-03-15 00:58:55 by jwe] jwe parents: 5164 diff changeset	6027 #else
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6028 (*current_liboctave_error_handler) ("UMFPACK not installed");
5203 dbeafbc0ff64 [project @ 2005-03-15 00:58:55 by jwe] jwe parents: 5164 diff changeset	6029 #endif
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6030 }
5785 6b9cec830d72 [project @ 2006-05-03 19:32:46 by dbateman] dbateman parents: 5775 diff changeset	6031 else if (typ != MatrixType::Hermitian)
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6032 (*current_liboctave_error_handler) ("incorrect matrix type");
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	6033 }
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	6034
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	6035 return retval;
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	6036 }
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	6037
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	6038 SparseMatrix
5785 6b9cec830d72 [project @ 2006-05-03 19:32:46 by dbateman] dbateman parents: 5775 diff changeset	6039 SparseMatrix::fsolve (MatrixType &mattype, const SparseMatrix& b,
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6040 octave_idx_type& err, double& rcond,
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6041 solve_singularity_handler sing_handler,
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6042 bool calc_cond) const
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	6043 {
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	6044 SparseMatrix retval;
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	6045
5275 23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe] jwe parents: 5261 diff changeset	6046 octave_idx_type nr = rows ();
23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe] jwe parents: 5261 diff changeset	6047 octave_idx_type nc = cols ();
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	6048 err = 0;
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	6049
6924 be176b7e110a [project @ 2007-09-25 19:08:19 by dbateman] dbateman parents: 6840 diff changeset	6050 if (nr != nc \|\| nr != b.rows ())
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	6051 (*current_liboctave_error_handler)
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	6052 ("matrix dimension mismatch solution of linear equations");
6924 be176b7e110a [project @ 2007-09-25 19:08:19 by dbateman] dbateman parents: 6840 diff changeset	6053 else if (nr == 0 \|\| b.cols () == 0)
be176b7e110a [project @ 2007-09-25 19:08:19 by dbateman] dbateman parents: 6840 diff changeset	6054 retval = SparseMatrix (nc, b.cols ());
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	6055 else
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	6056 {
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	6057 // Print spparms("spumoni") info if requested
5506 b4cfbb0ec8c4 [project @ 2005-10-23 19:09:32 by dbateman] dbateman parents: 5451 diff changeset	6058 volatile int typ = mattype.type ();
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	6059 mattype.info ();
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	6060
5785 6b9cec830d72 [project @ 2006-05-03 19:32:46 by dbateman] dbateman parents: 5775 diff changeset	6061 if (typ == MatrixType::Hermitian)
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6062 {
5506 b4cfbb0ec8c4 [project @ 2005-10-23 19:09:32 by dbateman] dbateman parents: 5451 diff changeset	6063 #ifdef HAVE_CHOLMOD
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6064 cholmod_common Common;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6065 cholmod_common *cm = &Common;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6066
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6067 // Setup initial parameters
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6068 CHOLMOD_NAME(start) (cm);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6069 cm->prefer_zomplex = false;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6070
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6071 double spu = octave_sparse_params::get_key ("spumoni");
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6072 if (spu == 0.)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6073 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6074 cm->print = -1;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6075 cm->print_function = 0;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6076 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6077 else
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6078 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6079 cm->print = static_cast<int> (spu) + 2;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6080 cm->print_function =&SparseCholPrint;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6081 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6082
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6083 cm->error_handler = &SparseCholError;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6084 cm->complex_divide = CHOLMOD_NAME(divcomplex);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6085 cm->hypotenuse = CHOLMOD_NAME(hypot);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6086
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6087 cm->final_ll = true;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6088
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6089 cholmod_sparse Astore;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6090 cholmod_sparse *A = &Astore;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6091 double dummy;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6092 A->nrow = nr;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6093 A->ncol = nc;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6094
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6095 A->p = cidx();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6096 A->i = ridx();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6097 A->nzmax = nnz();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6098 A->packed = true;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6099 A->sorted = true;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6100 A->nz = 0;
5506 b4cfbb0ec8c4 [project @ 2005-10-23 19:09:32 by dbateman] dbateman parents: 5451 diff changeset	6101 #ifdef IDX_TYPE_LONG
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6102 A->itype = CHOLMOD_LONG;
5506 b4cfbb0ec8c4 [project @ 2005-10-23 19:09:32 by dbateman] dbateman parents: 5451 diff changeset	6103 #else
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6104 A->itype = CHOLMOD_INT;
5506 b4cfbb0ec8c4 [project @ 2005-10-23 19:09:32 by dbateman] dbateman parents: 5451 diff changeset	6105 #endif
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6106 A->dtype = CHOLMOD_DOUBLE;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6107 A->stype = 1;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6108 A->xtype = CHOLMOD_REAL;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6109
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6110 if (nr < 1)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6111 A->x = &dummy;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6112 else
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6113 A->x = data();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6114
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6115 cholmod_sparse Bstore;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6116 cholmod_sparse *B = &Bstore;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6117 B->nrow = b.rows();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6118 B->ncol = b.cols();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6119 B->p = b.cidx();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6120 B->i = b.ridx();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6121 B->nzmax = b.nnz();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6122 B->packed = true;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6123 B->sorted = true;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6124 B->nz = 0;
5506 b4cfbb0ec8c4 [project @ 2005-10-23 19:09:32 by dbateman] dbateman parents: 5451 diff changeset	6125 #ifdef IDX_TYPE_LONG
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6126 B->itype = CHOLMOD_LONG;
5506 b4cfbb0ec8c4 [project @ 2005-10-23 19:09:32 by dbateman] dbateman parents: 5451 diff changeset	6127 #else
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6128 B->itype = CHOLMOD_INT;
5506 b4cfbb0ec8c4 [project @ 2005-10-23 19:09:32 by dbateman] dbateman parents: 5451 diff changeset	6129 #endif
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6130 B->dtype = CHOLMOD_DOUBLE;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6131 B->stype = 0;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6132 B->xtype = CHOLMOD_REAL;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6133
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6134 if (b.rows() < 1 \|\| b.cols() < 1)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6135 B->x = &dummy;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6136 else
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6137 B->x = b.data();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6138
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6139 cholmod_factor *L;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6140 BEGIN_INTERRUPT_IMMEDIATELY_IN_FOREIGN_CODE;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6141 L = CHOLMOD_NAME(analyze) (A, cm);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6142 CHOLMOD_NAME(factorize) (A, L, cm);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6143 if (calc_cond)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6144 rcond = CHOLMOD_NAME(rcond)(L, cm);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6145 else
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6146 rcond = 1.;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6147 END_INTERRUPT_IMMEDIATELY_IN_FOREIGN_CODE;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6148
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6149 if (rcond == 0.0)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6150 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6151 // Either its indefinite or singular. Try UMFPACK
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6152 mattype.mark_as_unsymmetric ();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6153 typ = MatrixType::Full;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6154 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6155 else
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6156 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6157 volatile double rcond_plus_one = rcond + 1.0;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6158
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6159 if (rcond_plus_one == 1.0 \|\| xisnan (rcond))
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6160 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6161 err = -2;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6162
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6163 if (sing_handler)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6164 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6165 sing_handler (rcond);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6166 mattype.mark_as_rectangular ();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6167 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6168 else
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6169 (*current_liboctave_error_handler)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6170 ("SparseMatrix::solve matrix singular to machine precision, rcond = %g",
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6171 rcond);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6172
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6173 return retval;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6174 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6175
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6176 cholmod_sparse *X;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6177 BEGIN_INTERRUPT_IMMEDIATELY_IN_FOREIGN_CODE;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6178 X = CHOLMOD_NAME(spsolve) (CHOLMOD_A, L, B, cm);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6179 END_INTERRUPT_IMMEDIATELY_IN_FOREIGN_CODE;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6180
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6181 retval = SparseMatrix (static_cast<octave_idx_type>(X->nrow),
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6182 static_cast<octave_idx_type>(X->ncol),
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6183 static_cast<octave_idx_type>(X->nzmax));
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6184 for (octave_idx_type j = 0;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6185 j <= static_cast<octave_idx_type>(X->ncol); j++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6186 retval.xcidx(j) = static_cast<octave_idx_type *>(X->p)[j];
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6187 for (octave_idx_type j = 0;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6188 j < static_cast<octave_idx_type>(X->nzmax); j++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6189 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6190 retval.xridx(j) = static_cast<octave_idx_type *>(X->i)[j];
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6191 retval.xdata(j) = static_cast<double *>(X->x)[j];
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6192 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6193
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6194 BEGIN_INTERRUPT_IMMEDIATELY_IN_FOREIGN_CODE;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6195 CHOLMOD_NAME(free_sparse) (&X, cm);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6196 CHOLMOD_NAME(free_factor) (&L, cm);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6197 CHOLMOD_NAME(finish) (cm);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6198 static char tmp[] = " ";
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6199 CHOLMOD_NAME(print_common) (tmp, cm);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6200 END_INTERRUPT_IMMEDIATELY_IN_FOREIGN_CODE;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6201 }
5506 b4cfbb0ec8c4 [project @ 2005-10-23 19:09:32 by dbateman] dbateman parents: 5451 diff changeset	6202 #else
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6203 (*current_liboctave_warning_handler)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6204 ("CHOLMOD not installed");
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6205
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6206 mattype.mark_as_unsymmetric ();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6207 typ = MatrixType::Full;
5506 b4cfbb0ec8c4 [project @ 2005-10-23 19:09:32 by dbateman] dbateman parents: 5451 diff changeset	6208 #endif
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6209 }
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	6210
5785 6b9cec830d72 [project @ 2006-05-03 19:32:46 by dbateman] dbateman parents: 5775 diff changeset	6211 if (typ == MatrixType::Full)
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6212 {
5203 dbeafbc0ff64 [project @ 2005-03-15 00:58:55 by jwe] jwe parents: 5164 diff changeset	6213 #ifdef HAVE_UMFPACK
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6214 Matrix Control, Info;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6215 void *Numeric = factorize (err, rcond, Control, Info,
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6216 sing_handler, calc_cond);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6217
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6218 if (err == 0)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6219 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6220 octave_idx_type b_nr = b.rows ();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6221 octave_idx_type b_nc = b.cols ();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6222 int status = 0;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6223 double *control = Control.fortran_vec ();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6224 double *info = Info.fortran_vec ();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6225 const octave_idx_type *Ap = cidx ();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6226 const octave_idx_type *Ai = ridx ();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6227 const double *Ax = data ();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6228
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6229 OCTAVE_LOCAL_BUFFER (double, Bx, b_nr);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6230 OCTAVE_LOCAL_BUFFER (double, Xx, b_nr);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6231
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6232 // Take a first guess that the number of non-zero terms
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6233 // will be as many as in b
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6234 octave_idx_type x_nz = b.nnz ();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6235 octave_idx_type ii = 0;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6236 retval = SparseMatrix (b_nr, b_nc, x_nz);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6237
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6238 retval.xcidx(0) = 0;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6239 for (octave_idx_type j = 0; j < b_nc; j++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6240 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6241
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6242 for (octave_idx_type i = 0; i < b_nr; i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6243 Bx[i] = b.elem (i, j);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6244
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6245 status = UMFPACK_DNAME (solve) (UMFPACK_A, Ap,
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6246 Ai, Ax, Xx, Bx, Numeric, control,
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6247 info);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6248 if (status < 0)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6249 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6250 (*current_liboctave_error_handler)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6251 ("SparseMatrix::solve solve failed");
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6252
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6253 UMFPACK_DNAME (report_status) (control, status);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6254
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6255 err = -1;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6256
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6257 break;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6258 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6259
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6260 for (octave_idx_type i = 0; i < b_nr; i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6261 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6262 double tmp = Xx[i];
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6263 if (tmp != 0.0)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6264 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6265 if (ii == x_nz)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6266 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6267 // Resize the sparse matrix
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6268 octave_idx_type sz = x_nz * (b_nc - j) / b_nc;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6269 sz = (sz > 10 ? sz : 10) + x_nz;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6270 retval.change_capacity (sz);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6271 x_nz = sz;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6272 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6273 retval.xdata(ii) = tmp;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6274 retval.xridx(ii++) = i;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6275 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6276 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6277 retval.xcidx(j+1) = ii;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6278 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6279
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6280 retval.maybe_compress ();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6281
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6282 UMFPACK_DNAME (report_info) (control, info);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6283
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6284 UMFPACK_DNAME (free_numeric) (&Numeric);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6285 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6286 else
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6287 mattype.mark_as_rectangular ();
5681 233d98d95659 [project @ 2006-03-16 17:48:55 by dbateman] dbateman parents: 5630 diff changeset	6288
5203 dbeafbc0ff64 [project @ 2005-03-15 00:58:55 by jwe] jwe parents: 5164 diff changeset	6289 #else
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6290 (*current_liboctave_error_handler) ("UMFPACK not installed");
5203 dbeafbc0ff64 [project @ 2005-03-15 00:58:55 by jwe] jwe parents: 5164 diff changeset	6291 #endif
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6292 }
5785 6b9cec830d72 [project @ 2006-05-03 19:32:46 by dbateman] dbateman parents: 5775 diff changeset	6293 else if (typ != MatrixType::Hermitian)
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6294 (*current_liboctave_error_handler) ("incorrect matrix type");
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	6295 }
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	6296
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	6297 return retval;
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	6298 }
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	6299
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	6300 ComplexMatrix
5785 6b9cec830d72 [project @ 2006-05-03 19:32:46 by dbateman] dbateman parents: 5775 diff changeset	6301 SparseMatrix::fsolve (MatrixType &mattype, const ComplexMatrix& b,
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6302 octave_idx_type& err, double& rcond,
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6303 solve_singularity_handler sing_handler,
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6304 bool calc_cond) const
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	6305 {
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	6306 ComplexMatrix retval;
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	6307
5275 23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe] jwe parents: 5261 diff changeset	6308 octave_idx_type nr = rows ();
23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe] jwe parents: 5261 diff changeset	6309 octave_idx_type nc = cols ();
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	6310 err = 0;
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	6311
6924 be176b7e110a [project @ 2007-09-25 19:08:19 by dbateman] dbateman parents: 6840 diff changeset	6312 if (nr != nc \|\| nr != b.rows ())
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	6313 (*current_liboctave_error_handler)
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	6314 ("matrix dimension mismatch solution of linear equations");
6924 be176b7e110a [project @ 2007-09-25 19:08:19 by dbateman] dbateman parents: 6840 diff changeset	6315 else if (nr == 0 \|\| b.cols () == 0)
be176b7e110a [project @ 2007-09-25 19:08:19 by dbateman] dbateman parents: 6840 diff changeset	6316 retval = ComplexMatrix (nc, b.cols (), Complex (0.0, 0.0));
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	6317 else
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	6318 {
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	6319 // Print spparms("spumoni") info if requested
5506 b4cfbb0ec8c4 [project @ 2005-10-23 19:09:32 by dbateman] dbateman parents: 5451 diff changeset	6320 volatile int typ = mattype.type ();
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	6321 mattype.info ();
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	6322
5785 6b9cec830d72 [project @ 2006-05-03 19:32:46 by dbateman] dbateman parents: 5775 diff changeset	6323 if (typ == MatrixType::Hermitian)
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6324 {
5506 b4cfbb0ec8c4 [project @ 2005-10-23 19:09:32 by dbateman] dbateman parents: 5451 diff changeset	6325 #ifdef HAVE_CHOLMOD
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6326 cholmod_common Common;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6327 cholmod_common *cm = &Common;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6328
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6329 // Setup initial parameters
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6330 CHOLMOD_NAME(start) (cm);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6331 cm->prefer_zomplex = false;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6332
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6333 double spu = octave_sparse_params::get_key ("spumoni");
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6334 if (spu == 0.)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6335 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6336 cm->print = -1;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6337 cm->print_function = 0;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6338 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6339 else
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6340 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6341 cm->print = static_cast<int> (spu) + 2;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6342 cm->print_function =&SparseCholPrint;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6343 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6344
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6345 cm->error_handler = &SparseCholError;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6346 cm->complex_divide = CHOLMOD_NAME(divcomplex);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6347 cm->hypotenuse = CHOLMOD_NAME(hypot);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6348
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6349 cm->final_ll = true;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6350
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6351 cholmod_sparse Astore;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6352 cholmod_sparse *A = &Astore;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6353 double dummy;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6354 A->nrow = nr;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6355 A->ncol = nc;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6356
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6357 A->p = cidx();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6358 A->i = ridx();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6359 A->nzmax = nnz();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6360 A->packed = true;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6361 A->sorted = true;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6362 A->nz = 0;
5506 b4cfbb0ec8c4 [project @ 2005-10-23 19:09:32 by dbateman] dbateman parents: 5451 diff changeset	6363 #ifdef IDX_TYPE_LONG
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6364 A->itype = CHOLMOD_LONG;
5506 b4cfbb0ec8c4 [project @ 2005-10-23 19:09:32 by dbateman] dbateman parents: 5451 diff changeset	6365 #else
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6366 A->itype = CHOLMOD_INT;
5506 b4cfbb0ec8c4 [project @ 2005-10-23 19:09:32 by dbateman] dbateman parents: 5451 diff changeset	6367 #endif
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6368 A->dtype = CHOLMOD_DOUBLE;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6369 A->stype = 1;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6370 A->xtype = CHOLMOD_REAL;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6371
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6372 if (nr < 1)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6373 A->x = &dummy;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6374 else
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6375 A->x = data();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6376
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6377 cholmod_dense Bstore;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6378 cholmod_dense *B = &Bstore;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6379 B->nrow = b.rows();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6380 B->ncol = b.cols();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6381 B->d = B->nrow;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6382 B->nzmax = B->nrow * B->ncol;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6383 B->dtype = CHOLMOD_DOUBLE;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6384 B->xtype = CHOLMOD_COMPLEX;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6385 if (nc < 1 \|\| b.cols() < 1)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6386 B->x = &dummy;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6387 else
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6388 // We won't alter it, honest :-)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6389 B->x = const_cast<Complex *>(b.fortran_vec());
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6390
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6391 cholmod_factor *L;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6392 BEGIN_INTERRUPT_IMMEDIATELY_IN_FOREIGN_CODE;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6393 L = CHOLMOD_NAME(analyze) (A, cm);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6394 CHOLMOD_NAME(factorize) (A, L, cm);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6395 if (calc_cond)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6396 rcond = CHOLMOD_NAME(rcond)(L, cm);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6397 else
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6398 rcond = 1.0;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6399 END_INTERRUPT_IMMEDIATELY_IN_FOREIGN_CODE;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6400
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6401 if (rcond == 0.0)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6402 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6403 // Either its indefinite or singular. Try UMFPACK
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6404 mattype.mark_as_unsymmetric ();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6405 typ = MatrixType::Full;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6406 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6407 else
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6408 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6409 volatile double rcond_plus_one = rcond + 1.0;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6410
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6411 if (rcond_plus_one == 1.0 \|\| xisnan (rcond))
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6412 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6413 err = -2;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6414
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6415 if (sing_handler)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6416 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6417 sing_handler (rcond);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6418 mattype.mark_as_rectangular ();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6419 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6420 else
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6421 (*current_liboctave_error_handler)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6422 ("SparseMatrix::solve matrix singular to machine precision, rcond = %g",
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6423 rcond);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6424
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6425 return retval;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6426 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6427
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6428 cholmod_dense *X;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6429 BEGIN_INTERRUPT_IMMEDIATELY_IN_FOREIGN_CODE;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6430 X = CHOLMOD_NAME(solve) (CHOLMOD_A, L, B, cm);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6431 END_INTERRUPT_IMMEDIATELY_IN_FOREIGN_CODE;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6432
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6433 retval.resize (b.rows (), b.cols());
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6434 for (octave_idx_type j = 0; j < b.cols(); j++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6435 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6436 octave_idx_type jr = j * b.rows();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6437 for (octave_idx_type i = 0; i < b.rows(); i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6438 retval.xelem(i,j) = static_cast<Complex *>(X->x)[jr + i];
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6439 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6440
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6441 BEGIN_INTERRUPT_IMMEDIATELY_IN_FOREIGN_CODE;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6442 CHOLMOD_NAME(free_dense) (&X, cm);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6443 CHOLMOD_NAME(free_factor) (&L, cm);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6444 CHOLMOD_NAME(finish) (cm);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6445 static char tmp[] = " ";
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6446 CHOLMOD_NAME(print_common) (tmp, cm);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6447 END_INTERRUPT_IMMEDIATELY_IN_FOREIGN_CODE;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6448 }
5506 b4cfbb0ec8c4 [project @ 2005-10-23 19:09:32 by dbateman] dbateman parents: 5451 diff changeset	6449 #else
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6450 (*current_liboctave_warning_handler)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6451 ("CHOLMOD not installed");
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6452
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6453 mattype.mark_as_unsymmetric ();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6454 typ = MatrixType::Full;
5506 b4cfbb0ec8c4 [project @ 2005-10-23 19:09:32 by dbateman] dbateman parents: 5451 diff changeset	6455 #endif
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6456 }
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	6457
5785 6b9cec830d72 [project @ 2006-05-03 19:32:46 by dbateman] dbateman parents: 5775 diff changeset	6458 if (typ == MatrixType::Full)
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6459 {
5203 dbeafbc0ff64 [project @ 2005-03-15 00:58:55 by jwe] jwe parents: 5164 diff changeset	6460 #ifdef HAVE_UMFPACK
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6461 Matrix Control, Info;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6462 void *Numeric = factorize (err, rcond, Control, Info,
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6463 sing_handler, calc_cond);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6464
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6465 if (err == 0)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6466 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6467 octave_idx_type b_nr = b.rows ();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6468 octave_idx_type b_nc = b.cols ();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6469 int status = 0;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6470 double *control = Control.fortran_vec ();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6471 double *info = Info.fortran_vec ();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6472 const octave_idx_type *Ap = cidx ();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6473 const octave_idx_type *Ai = ridx ();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6474 const double *Ax = data ();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6475
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6476 OCTAVE_LOCAL_BUFFER (double, Bx, b_nr);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6477 OCTAVE_LOCAL_BUFFER (double, Bz, b_nr);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6478
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6479 retval.resize (b_nr, b_nc);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6480
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6481 OCTAVE_LOCAL_BUFFER (double, Xx, b_nr);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6482 OCTAVE_LOCAL_BUFFER (double, Xz, b_nr);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6483
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6484 for (octave_idx_type j = 0; j < b_nc; j++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6485 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6486 for (octave_idx_type i = 0; i < b_nr; i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6487 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6488 Complex c = b (i,j);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6489 Bx[i] = std::real (c);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6490 Bz[i] = std::imag (c);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6491 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6492
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6493 status = UMFPACK_DNAME (solve) (UMFPACK_A, Ap,
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6494 Ai, Ax, Xx, Bx, Numeric, control,
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6495 info);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6496 int status2 = UMFPACK_DNAME (solve) (UMFPACK_A,
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6497 Ap, Ai, Ax, Xz, Bz, Numeric,
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6498 control, info) ;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6499
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6500 if (status < 0 \|\| status2 < 0)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6501 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6502 (*current_liboctave_error_handler)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6503 ("SparseMatrix::solve solve failed");
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6504
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6505 UMFPACK_DNAME (report_status) (control, status);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6506
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6507 err = -1;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6508
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6509 break;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6510 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6511
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6512 for (octave_idx_type i = 0; i < b_nr; i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6513 retval (i, j) = Complex (Xx[i], Xz[i]);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6514 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6515
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6516 UMFPACK_DNAME (report_info) (control, info);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6517
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6518 UMFPACK_DNAME (free_numeric) (&Numeric);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6519 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6520 else
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6521 mattype.mark_as_rectangular ();
5681 233d98d95659 [project @ 2006-03-16 17:48:55 by dbateman] dbateman parents: 5630 diff changeset	6522
5203 dbeafbc0ff64 [project @ 2005-03-15 00:58:55 by jwe] jwe parents: 5164 diff changeset	6523 #else
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6524 (*current_liboctave_error_handler) ("UMFPACK not installed");
5203 dbeafbc0ff64 [project @ 2005-03-15 00:58:55 by jwe] jwe parents: 5164 diff changeset	6525 #endif
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6526 }
5785 6b9cec830d72 [project @ 2006-05-03 19:32:46 by dbateman] dbateman parents: 5775 diff changeset	6527 else if (typ != MatrixType::Hermitian)
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6528 (*current_liboctave_error_handler) ("incorrect matrix type");
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	6529 }
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	6530
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	6531 return retval;
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	6532 }
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	6533
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	6534 SparseComplexMatrix
5785 6b9cec830d72 [project @ 2006-05-03 19:32:46 by dbateman] dbateman parents: 5775 diff changeset	6535 SparseMatrix::fsolve (MatrixType &mattype, const SparseComplexMatrix& b,
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6536 octave_idx_type& err, double& rcond,
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6537 solve_singularity_handler sing_handler,
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6538 bool calc_cond) const
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	6539 {
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	6540 SparseComplexMatrix retval;
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	6541
5275 23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe] jwe parents: 5261 diff changeset	6542 octave_idx_type nr = rows ();
23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe] jwe parents: 5261 diff changeset	6543 octave_idx_type nc = cols ();
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	6544 err = 0;
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	6545
6924 be176b7e110a [project @ 2007-09-25 19:08:19 by dbateman] dbateman parents: 6840 diff changeset	6546 if (nr != nc \|\| nr != b.rows ())
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	6547 (*current_liboctave_error_handler)
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	6548 ("matrix dimension mismatch solution of linear equations");
6924 be176b7e110a [project @ 2007-09-25 19:08:19 by dbateman] dbateman parents: 6840 diff changeset	6549 else if (nr == 0 \|\| b.cols () == 0)
be176b7e110a [project @ 2007-09-25 19:08:19 by dbateman] dbateman parents: 6840 diff changeset	6550 retval = SparseComplexMatrix (nc, b.cols ());
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	6551 else
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	6552 {
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	6553 // Print spparms("spumoni") info if requested
5506 b4cfbb0ec8c4 [project @ 2005-10-23 19:09:32 by dbateman] dbateman parents: 5451 diff changeset	6554 volatile int typ = mattype.type ();
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	6555 mattype.info ();
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	6556
5785 6b9cec830d72 [project @ 2006-05-03 19:32:46 by dbateman] dbateman parents: 5775 diff changeset	6557 if (typ == MatrixType::Hermitian)
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6558 {
5506 b4cfbb0ec8c4 [project @ 2005-10-23 19:09:32 by dbateman] dbateman parents: 5451 diff changeset	6559 #ifdef HAVE_CHOLMOD
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6560 cholmod_common Common;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6561 cholmod_common *cm = &Common;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6562
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6563 // Setup initial parameters
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6564 CHOLMOD_NAME(start) (cm);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6565 cm->prefer_zomplex = false;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6566
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6567 double spu = octave_sparse_params::get_key ("spumoni");
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6568 if (spu == 0.)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6569 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6570 cm->print = -1;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6571 cm->print_function = 0;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6572 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6573 else
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6574 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6575 cm->print = static_cast<int> (spu) + 2;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6576 cm->print_function =&SparseCholPrint;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6577 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6578
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6579 cm->error_handler = &SparseCholError;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6580 cm->complex_divide = CHOLMOD_NAME(divcomplex);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6581 cm->hypotenuse = CHOLMOD_NAME(hypot);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6582
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6583 cm->final_ll = true;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6584
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6585 cholmod_sparse Astore;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6586 cholmod_sparse *A = &Astore;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6587 double dummy;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6588 A->nrow = nr;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6589 A->ncol = nc;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6590
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6591 A->p = cidx();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6592 A->i = ridx();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6593 A->nzmax = nnz();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6594 A->packed = true;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6595 A->sorted = true;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6596 A->nz = 0;
5506 b4cfbb0ec8c4 [project @ 2005-10-23 19:09:32 by dbateman] dbateman parents: 5451 diff changeset	6597 #ifdef IDX_TYPE_LONG
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6598 A->itype = CHOLMOD_LONG;
5506 b4cfbb0ec8c4 [project @ 2005-10-23 19:09:32 by dbateman] dbateman parents: 5451 diff changeset	6599 #else
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6600 A->itype = CHOLMOD_INT;
5506 b4cfbb0ec8c4 [project @ 2005-10-23 19:09:32 by dbateman] dbateman parents: 5451 diff changeset	6601 #endif
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6602 A->dtype = CHOLMOD_DOUBLE;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6603 A->stype = 1;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6604 A->xtype = CHOLMOD_REAL;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6605
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6606 if (nr < 1)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6607 A->x = &dummy;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6608 else
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6609 A->x = data();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6610
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6611 cholmod_sparse Bstore;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6612 cholmod_sparse *B = &Bstore;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6613 B->nrow = b.rows();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6614 B->ncol = b.cols();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6615 B->p = b.cidx();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6616 B->i = b.ridx();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6617 B->nzmax = b.nnz();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6618 B->packed = true;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6619 B->sorted = true;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6620 B->nz = 0;
5506 b4cfbb0ec8c4 [project @ 2005-10-23 19:09:32 by dbateman] dbateman parents: 5451 diff changeset	6621 #ifdef IDX_TYPE_LONG
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6622 B->itype = CHOLMOD_LONG;
5506 b4cfbb0ec8c4 [project @ 2005-10-23 19:09:32 by dbateman] dbateman parents: 5451 diff changeset	6623 #else
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6624 B->itype = CHOLMOD_INT;
5506 b4cfbb0ec8c4 [project @ 2005-10-23 19:09:32 by dbateman] dbateman parents: 5451 diff changeset	6625 #endif
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6626 B->dtype = CHOLMOD_DOUBLE;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6627 B->stype = 0;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6628 B->xtype = CHOLMOD_COMPLEX;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6629
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6630 if (b.rows() < 1 \|\| b.cols() < 1)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6631 B->x = &dummy;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6632 else
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6633 B->x = b.data();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6634
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6635 cholmod_factor *L;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6636 BEGIN_INTERRUPT_IMMEDIATELY_IN_FOREIGN_CODE;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6637 L = CHOLMOD_NAME(analyze) (A, cm);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6638 CHOLMOD_NAME(factorize) (A, L, cm);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6639 if (calc_cond)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6640 rcond = CHOLMOD_NAME(rcond)(L, cm);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6641 else
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6642 rcond = 1.0;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6643 END_INTERRUPT_IMMEDIATELY_IN_FOREIGN_CODE;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6644
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6645 if (rcond == 0.0)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6646 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6647 // Either its indefinite or singular. Try UMFPACK
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6648 mattype.mark_as_unsymmetric ();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6649 typ = MatrixType::Full;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6650 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6651 else
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6652 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6653 volatile double rcond_plus_one = rcond + 1.0;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6654
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6655 if (rcond_plus_one == 1.0 \|\| xisnan (rcond))
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6656 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6657 err = -2;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6658
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6659 if (sing_handler)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6660 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6661 sing_handler (rcond);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6662 mattype.mark_as_rectangular ();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6663 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6664 else
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6665 (*current_liboctave_error_handler)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6666 ("SparseMatrix::solve matrix singular to machine precision, rcond = %g",
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6667 rcond);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6668
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6669 return retval;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6670 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6671
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6672 cholmod_sparse *X;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6673 BEGIN_INTERRUPT_IMMEDIATELY_IN_FOREIGN_CODE;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6674 X = CHOLMOD_NAME(spsolve) (CHOLMOD_A, L, B, cm);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6675 END_INTERRUPT_IMMEDIATELY_IN_FOREIGN_CODE;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6676
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6677 retval = SparseComplexMatrix
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6678 (static_cast<octave_idx_type>(X->nrow),
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6679 static_cast<octave_idx_type>(X->ncol),
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6680 static_cast<octave_idx_type>(X->nzmax));
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6681 for (octave_idx_type j = 0;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6682 j <= static_cast<octave_idx_type>(X->ncol); j++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6683 retval.xcidx(j) = static_cast<octave_idx_type *>(X->p)[j];
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6684 for (octave_idx_type j = 0;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6685 j < static_cast<octave_idx_type>(X->nzmax); j++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6686 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6687 retval.xridx(j) = static_cast<octave_idx_type *>(X->i)[j];
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6688 retval.xdata(j) = static_cast<Complex *>(X->x)[j];
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6689 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6690
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6691 BEGIN_INTERRUPT_IMMEDIATELY_IN_FOREIGN_CODE;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6692 CHOLMOD_NAME(free_sparse) (&X, cm);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6693 CHOLMOD_NAME(free_factor) (&L, cm);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6694 CHOLMOD_NAME(finish) (cm);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6695 static char tmp[] = " ";
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6696 CHOLMOD_NAME(print_common) (tmp, cm);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6697 END_INTERRUPT_IMMEDIATELY_IN_FOREIGN_CODE;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6698 }
5506 b4cfbb0ec8c4 [project @ 2005-10-23 19:09:32 by dbateman] dbateman parents: 5451 diff changeset	6699 #else
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6700 (*current_liboctave_warning_handler)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6701 ("CHOLMOD not installed");
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6702
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6703 mattype.mark_as_unsymmetric ();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6704 typ = MatrixType::Full;
5506 b4cfbb0ec8c4 [project @ 2005-10-23 19:09:32 by dbateman] dbateman parents: 5451 diff changeset	6705 #endif
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6706 }
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	6707
5785 6b9cec830d72 [project @ 2006-05-03 19:32:46 by dbateman] dbateman parents: 5775 diff changeset	6708 if (typ == MatrixType::Full)
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6709 {
5203 dbeafbc0ff64 [project @ 2005-03-15 00:58:55 by jwe] jwe parents: 5164 diff changeset	6710 #ifdef HAVE_UMFPACK
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6711 Matrix Control, Info;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6712 void *Numeric = factorize (err, rcond, Control, Info,
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6713 sing_handler, calc_cond);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6714
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6715 if (err == 0)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6716 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6717 octave_idx_type b_nr = b.rows ();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6718 octave_idx_type b_nc = b.cols ();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6719 int status = 0;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6720 double *control = Control.fortran_vec ();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6721 double *info = Info.fortran_vec ();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6722 const octave_idx_type *Ap = cidx ();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6723 const octave_idx_type *Ai = ridx ();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6724 const double *Ax = data ();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6725
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6726 OCTAVE_LOCAL_BUFFER (double, Bx, b_nr);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6727 OCTAVE_LOCAL_BUFFER (double, Bz, b_nr);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6728
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6729 // Take a first guess that the number of non-zero terms
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6730 // will be as many as in b
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6731 octave_idx_type x_nz = b.nnz ();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6732 octave_idx_type ii = 0;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6733 retval = SparseComplexMatrix (b_nr, b_nc, x_nz);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6734
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6735 OCTAVE_LOCAL_BUFFER (double, Xx, b_nr);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6736 OCTAVE_LOCAL_BUFFER (double, Xz, b_nr);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6737
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6738 retval.xcidx(0) = 0;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6739 for (octave_idx_type j = 0; j < b_nc; j++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6740 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6741 for (octave_idx_type i = 0; i < b_nr; i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6742 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6743 Complex c = b (i,j);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6744 Bx[i] = std::real (c);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6745 Bz[i] = std::imag (c);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6746 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6747
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6748 status = UMFPACK_DNAME (solve) (UMFPACK_A, Ap,
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6749 Ai, Ax, Xx, Bx, Numeric, control,
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6750 info);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6751 int status2 = UMFPACK_DNAME (solve) (UMFPACK_A,
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6752 Ap, Ai, Ax, Xz, Bz, Numeric,
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6753 control, info) ;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6754
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6755 if (status < 0 \|\| status2 < 0)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6756 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6757 (*current_liboctave_error_handler)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6758 ("SparseMatrix::solve solve failed");
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6759
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6760 UMFPACK_DNAME (report_status) (control, status);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6761
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6762 err = -1;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6763
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6764 break;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6765 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6766
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6767 for (octave_idx_type i = 0; i < b_nr; i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6768 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6769 Complex tmp = Complex (Xx[i], Xz[i]);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6770 if (tmp != 0.0)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6771 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6772 if (ii == x_nz)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6773 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6774 // Resize the sparse matrix
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6775 octave_idx_type sz = x_nz * (b_nc - j) / b_nc;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6776 sz = (sz > 10 ? sz : 10) + x_nz;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6777 retval.change_capacity (sz);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6778 x_nz = sz;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6779 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6780 retval.xdata(ii) = tmp;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6781 retval.xridx(ii++) = i;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6782 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6783 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6784 retval.xcidx(j+1) = ii;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6785 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6786
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6787 retval.maybe_compress ();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6788
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6789 UMFPACK_DNAME (report_info) (control, info);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6790
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6791 UMFPACK_DNAME (free_numeric) (&Numeric);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6792 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6793 else
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6794 mattype.mark_as_rectangular ();
5203 dbeafbc0ff64 [project @ 2005-03-15 00:58:55 by jwe] jwe parents: 5164 diff changeset	6795 #else
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6796 (*current_liboctave_error_handler) ("UMFPACK not installed");
5203 dbeafbc0ff64 [project @ 2005-03-15 00:58:55 by jwe] jwe parents: 5164 diff changeset	6797 #endif
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6798 }
5785 6b9cec830d72 [project @ 2006-05-03 19:32:46 by dbateman] dbateman parents: 5775 diff changeset	6799 else if (typ != MatrixType::Hermitian)
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6800 (*current_liboctave_error_handler) ("incorrect matrix type");
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	6801 }
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	6802
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	6803 return retval;
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	6804 }
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	6805
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	6806 Matrix
5785 6b9cec830d72 [project @ 2006-05-03 19:32:46 by dbateman] dbateman parents: 5775 diff changeset	6807 SparseMatrix::solve (MatrixType &mattype, const Matrix& b) const
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	6808 {
5275 23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe] jwe parents: 5261 diff changeset	6809 octave_idx_type info;
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	6810 double rcond;
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	6811 return solve (mattype, b, info, rcond, 0);
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	6812 }
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	6813
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	6814 Matrix
5785 6b9cec830d72 [project @ 2006-05-03 19:32:46 by dbateman] dbateman parents: 5775 diff changeset	6815 SparseMatrix::solve (MatrixType &mattype, const Matrix& b,
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6816 octave_idx_type& info) const
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	6817 {
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	6818 double rcond;
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	6819 return solve (mattype, b, info, rcond, 0);
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	6820 }
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	6821
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	6822 Matrix
5785 6b9cec830d72 [project @ 2006-05-03 19:32:46 by dbateman] dbateman parents: 5775 diff changeset	6823 SparseMatrix::solve (MatrixType &mattype, const Matrix& b, octave_idx_type& info,
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6824 double& rcond) const
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	6825 {
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	6826 return solve (mattype, b, info, rcond, 0);
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	6827 }
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	6828
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	6829 Matrix
5785 6b9cec830d72 [project @ 2006-05-03 19:32:46 by dbateman] dbateman parents: 5775 diff changeset	6830 SparseMatrix::solve (MatrixType &mattype, const Matrix& b, octave_idx_type& err,
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6831 double& rcond, solve_singularity_handler sing_handler,
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6832 bool singular_fallback) const
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	6833 {
5681 233d98d95659 [project @ 2006-03-16 17:48:55 by dbateman] dbateman parents: 5630 diff changeset	6834 Matrix retval;
5322 22994a5730f9 [project @ 2005-04-29 13:04:24 by dbateman] dbateman parents: 5307 diff changeset	6835 int typ = mattype.type (false);
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	6836
5785 6b9cec830d72 [project @ 2006-05-03 19:32:46 by dbateman] dbateman parents: 5775 diff changeset	6837 if (typ == MatrixType::Unknown)
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	6838 typ = mattype.type (*this);
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	6839
5681 233d98d95659 [project @ 2006-03-16 17:48:55 by dbateman] dbateman parents: 5630 diff changeset	6840 // Only calculate the condition number for CHOLMOD/UMFPACK
5785 6b9cec830d72 [project @ 2006-05-03 19:32:46 by dbateman] dbateman parents: 5775 diff changeset	6841 if (typ == MatrixType::Diagonal \|\| typ == MatrixType::Permuted_Diagonal)
5681 233d98d95659 [project @ 2006-03-16 17:48:55 by dbateman] dbateman parents: 5630 diff changeset	6842 retval = dsolve (mattype, b, err, rcond, sing_handler, false);
5785 6b9cec830d72 [project @ 2006-05-03 19:32:46 by dbateman] dbateman parents: 5775 diff changeset	6843 else if (typ == MatrixType::Upper \|\| typ == MatrixType::Permuted_Upper)
5681 233d98d95659 [project @ 2006-03-16 17:48:55 by dbateman] dbateman parents: 5630 diff changeset	6844 retval = utsolve (mattype, b, err, rcond, sing_handler, false);
5785 6b9cec830d72 [project @ 2006-05-03 19:32:46 by dbateman] dbateman parents: 5775 diff changeset	6845 else if (typ == MatrixType::Lower \|\| typ == MatrixType::Permuted_Lower)
5681 233d98d95659 [project @ 2006-03-16 17:48:55 by dbateman] dbateman parents: 5630 diff changeset	6846 retval = ltsolve (mattype, b, err, rcond, sing_handler, false);
5785 6b9cec830d72 [project @ 2006-05-03 19:32:46 by dbateman] dbateman parents: 5775 diff changeset	6847 else if (typ == MatrixType::Banded \|\| typ == MatrixType::Banded_Hermitian)
5681 233d98d95659 [project @ 2006-03-16 17:48:55 by dbateman] dbateman parents: 5630 diff changeset	6848 retval = bsolve (mattype, b, err, rcond, sing_handler, false);
5785 6b9cec830d72 [project @ 2006-05-03 19:32:46 by dbateman] dbateman parents: 5775 diff changeset	6849 else if (typ == MatrixType::Tridiagonal \|\|
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6850 typ == MatrixType::Tridiagonal_Hermitian)
5681 233d98d95659 [project @ 2006-03-16 17:48:55 by dbateman] dbateman parents: 5630 diff changeset	6851 retval = trisolve (mattype, b, err, rcond, sing_handler, false);
5785 6b9cec830d72 [project @ 2006-05-03 19:32:46 by dbateman] dbateman parents: 5775 diff changeset	6852 else if (typ == MatrixType::Full \|\| typ == MatrixType::Hermitian)
5681 233d98d95659 [project @ 2006-03-16 17:48:55 by dbateman] dbateman parents: 5630 diff changeset	6853 retval = fsolve (mattype, b, err, rcond, sing_handler, true);
5785 6b9cec830d72 [project @ 2006-05-03 19:32:46 by dbateman] dbateman parents: 5775 diff changeset	6854 else if (typ != MatrixType::Rectangular)
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	6855 {
5681 233d98d95659 [project @ 2006-03-16 17:48:55 by dbateman] dbateman parents: 5630 diff changeset	6856 (*current_liboctave_error_handler) ("unknown matrix type");
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	6857 return Matrix ();
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	6858 }
5681 233d98d95659 [project @ 2006-03-16 17:48:55 by dbateman] dbateman parents: 5630 diff changeset	6859
233d98d95659 [project @ 2006-03-16 17:48:55 by dbateman] dbateman parents: 5630 diff changeset	6860 // Rectangular or one of the above solvers flags a singular matrix
5785 6b9cec830d72 [project @ 2006-05-03 19:32:46 by dbateman] dbateman parents: 5775 diff changeset	6861 if (singular_fallback && mattype.type (false) == MatrixType::Rectangular)
5681 233d98d95659 [project @ 2006-03-16 17:48:55 by dbateman] dbateman parents: 5630 diff changeset	6862 {
233d98d95659 [project @ 2006-03-16 17:48:55 by dbateman] dbateman parents: 5630 diff changeset	6863 rcond = 1.;
233d98d95659 [project @ 2006-03-16 17:48:55 by dbateman] dbateman parents: 5630 diff changeset	6864 #ifdef USE_QRSOLVE
233d98d95659 [project @ 2006-03-16 17:48:55 by dbateman] dbateman parents: 5630 diff changeset	6865 retval = qrsolve (*this, b, err);
233d98d95659 [project @ 2006-03-16 17:48:55 by dbateman] dbateman parents: 5630 diff changeset	6866 #else
233d98d95659 [project @ 2006-03-16 17:48:55 by dbateman] dbateman parents: 5630 diff changeset	6867 retval = dmsolve<Matrix, SparseMatrix, Matrix> (*this, b, err);
233d98d95659 [project @ 2006-03-16 17:48:55 by dbateman] dbateman parents: 5630 diff changeset	6868 #endif
233d98d95659 [project @ 2006-03-16 17:48:55 by dbateman] dbateman parents: 5630 diff changeset	6869 }
233d98d95659 [project @ 2006-03-16 17:48:55 by dbateman] dbateman parents: 5630 diff changeset	6870
233d98d95659 [project @ 2006-03-16 17:48:55 by dbateman] dbateman parents: 5630 diff changeset	6871 return retval;
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	6872 }
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	6873
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	6874 SparseMatrix
5785 6b9cec830d72 [project @ 2006-05-03 19:32:46 by dbateman] dbateman parents: 5775 diff changeset	6875 SparseMatrix::solve (MatrixType &mattype, const SparseMatrix& b) const
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	6876 {
5275 23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe] jwe parents: 5261 diff changeset	6877 octave_idx_type info;
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	6878 double rcond;
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	6879 return solve (mattype, b, info, rcond, 0);
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	6880 }
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	6881
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	6882 SparseMatrix
5785 6b9cec830d72 [project @ 2006-05-03 19:32:46 by dbateman] dbateman parents: 5775 diff changeset	6883 SparseMatrix::solve (MatrixType &mattype, const SparseMatrix& b,
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6884 octave_idx_type& info) const
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	6885 {
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	6886 double rcond;
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	6887 return solve (mattype, b, info, rcond, 0);
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	6888 }
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	6889
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	6890 SparseMatrix
5785 6b9cec830d72 [project @ 2006-05-03 19:32:46 by dbateman] dbateman parents: 5775 diff changeset	6891 SparseMatrix::solve (MatrixType &mattype, const SparseMatrix& b,
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6892 octave_idx_type& info, double& rcond) const
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	6893 {
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	6894 return solve (mattype, b, info, rcond, 0);
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	6895 }
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	6896
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	6897 SparseMatrix
5785 6b9cec830d72 [project @ 2006-05-03 19:32:46 by dbateman] dbateman parents: 5775 diff changeset	6898 SparseMatrix::solve (MatrixType &mattype, const SparseMatrix& b,
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6899 octave_idx_type& err, double& rcond,
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6900 solve_singularity_handler sing_handler,
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6901 bool singular_fallback) const
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	6902 {
5681 233d98d95659 [project @ 2006-03-16 17:48:55 by dbateman] dbateman parents: 5630 diff changeset	6903 SparseMatrix retval;
5322 22994a5730f9 [project @ 2005-04-29 13:04:24 by dbateman] dbateman parents: 5307 diff changeset	6904 int typ = mattype.type (false);
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	6905
5785 6b9cec830d72 [project @ 2006-05-03 19:32:46 by dbateman] dbateman parents: 5775 diff changeset	6906 if (typ == MatrixType::Unknown)
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	6907 typ = mattype.type (*this);
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	6908
5785 6b9cec830d72 [project @ 2006-05-03 19:32:46 by dbateman] dbateman parents: 5775 diff changeset	6909 if (typ == MatrixType::Diagonal \|\| typ == MatrixType::Permuted_Diagonal)
5681 233d98d95659 [project @ 2006-03-16 17:48:55 by dbateman] dbateman parents: 5630 diff changeset	6910 retval = dsolve (mattype, b, err, rcond, sing_handler, false);
5785 6b9cec830d72 [project @ 2006-05-03 19:32:46 by dbateman] dbateman parents: 5775 diff changeset	6911 else if (typ == MatrixType::Upper \|\| typ == MatrixType::Permuted_Upper)
5681 233d98d95659 [project @ 2006-03-16 17:48:55 by dbateman] dbateman parents: 5630 diff changeset	6912 retval = utsolve (mattype, b, err, rcond, sing_handler, false);
5785 6b9cec830d72 [project @ 2006-05-03 19:32:46 by dbateman] dbateman parents: 5775 diff changeset	6913 else if (typ == MatrixType::Lower \|\| typ == MatrixType::Permuted_Lower)
5681 233d98d95659 [project @ 2006-03-16 17:48:55 by dbateman] dbateman parents: 5630 diff changeset	6914 retval = ltsolve (mattype, b, err, rcond, sing_handler, false);
5785 6b9cec830d72 [project @ 2006-05-03 19:32:46 by dbateman] dbateman parents: 5775 diff changeset	6915 else if (typ == MatrixType::Banded \|\| typ == MatrixType::Banded_Hermitian)
5681 233d98d95659 [project @ 2006-03-16 17:48:55 by dbateman] dbateman parents: 5630 diff changeset	6916 retval = bsolve (mattype, b, err, rcond, sing_handler, false);
5785 6b9cec830d72 [project @ 2006-05-03 19:32:46 by dbateman] dbateman parents: 5775 diff changeset	6917 else if (typ == MatrixType::Tridiagonal \|\|
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6918 typ == MatrixType::Tridiagonal_Hermitian)
5681 233d98d95659 [project @ 2006-03-16 17:48:55 by dbateman] dbateman parents: 5630 diff changeset	6919 retval = trisolve (mattype, b, err, rcond, sing_handler, false);
5785 6b9cec830d72 [project @ 2006-05-03 19:32:46 by dbateman] dbateman parents: 5775 diff changeset	6920 else if (typ == MatrixType::Full \|\| typ == MatrixType::Hermitian)
5681 233d98d95659 [project @ 2006-03-16 17:48:55 by dbateman] dbateman parents: 5630 diff changeset	6921 retval = fsolve (mattype, b, err, rcond, sing_handler, true);
5785 6b9cec830d72 [project @ 2006-05-03 19:32:46 by dbateman] dbateman parents: 5775 diff changeset	6922 else if (typ != MatrixType::Rectangular)
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	6923 {
5681 233d98d95659 [project @ 2006-03-16 17:48:55 by dbateman] dbateman parents: 5630 diff changeset	6924 (*current_liboctave_error_handler) ("unknown matrix type");
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	6925 return SparseMatrix ();
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	6926 }
5681 233d98d95659 [project @ 2006-03-16 17:48:55 by dbateman] dbateman parents: 5630 diff changeset	6927
5785 6b9cec830d72 [project @ 2006-05-03 19:32:46 by dbateman] dbateman parents: 5775 diff changeset	6928 if (singular_fallback && mattype.type (false) == MatrixType::Rectangular)
5681 233d98d95659 [project @ 2006-03-16 17:48:55 by dbateman] dbateman parents: 5630 diff changeset	6929 {
233d98d95659 [project @ 2006-03-16 17:48:55 by dbateman] dbateman parents: 5630 diff changeset	6930 rcond = 1.;
233d98d95659 [project @ 2006-03-16 17:48:55 by dbateman] dbateman parents: 5630 diff changeset	6931 #ifdef USE_QRSOLVE
233d98d95659 [project @ 2006-03-16 17:48:55 by dbateman] dbateman parents: 5630 diff changeset	6932 retval = qrsolve (*this, b, err);
233d98d95659 [project @ 2006-03-16 17:48:55 by dbateman] dbateman parents: 5630 diff changeset	6933 #else
233d98d95659 [project @ 2006-03-16 17:48:55 by dbateman] dbateman parents: 5630 diff changeset	6934 retval = dmsolve<SparseMatrix, SparseMatrix,
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6935 SparseMatrix> (*this, b, err);
5681 233d98d95659 [project @ 2006-03-16 17:48:55 by dbateman] dbateman parents: 5630 diff changeset	6936 #endif
233d98d95659 [project @ 2006-03-16 17:48:55 by dbateman] dbateman parents: 5630 diff changeset	6937 }
233d98d95659 [project @ 2006-03-16 17:48:55 by dbateman] dbateman parents: 5630 diff changeset	6938
233d98d95659 [project @ 2006-03-16 17:48:55 by dbateman] dbateman parents: 5630 diff changeset	6939 return retval;
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	6940 }
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	6941
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	6942 ComplexMatrix
5785 6b9cec830d72 [project @ 2006-05-03 19:32:46 by dbateman] dbateman parents: 5775 diff changeset	6943 SparseMatrix::solve (MatrixType &mattype, const ComplexMatrix& b) const
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	6944 {
5275 23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe] jwe parents: 5261 diff changeset	6945 octave_idx_type info;
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	6946 double rcond;
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	6947 return solve (mattype, b, info, rcond, 0);
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	6948 }
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	6949
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	6950 ComplexMatrix
5785 6b9cec830d72 [project @ 2006-05-03 19:32:46 by dbateman] dbateman parents: 5775 diff changeset	6951 SparseMatrix::solve (MatrixType &mattype, const ComplexMatrix& b,
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6952 octave_idx_type& info) const
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	6953 {
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	6954 double rcond;
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	6955 return solve (mattype, b, info, rcond, 0);
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	6956 }
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	6957
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	6958 ComplexMatrix
5785 6b9cec830d72 [project @ 2006-05-03 19:32:46 by dbateman] dbateman parents: 5775 diff changeset	6959 SparseMatrix::solve (MatrixType &mattype, const ComplexMatrix& b,
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6960 octave_idx_type& info, double& rcond) const
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	6961 {
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	6962 return solve (mattype, b, info, rcond, 0);
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	6963 }
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	6964
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	6965 ComplexMatrix
5785 6b9cec830d72 [project @ 2006-05-03 19:32:46 by dbateman] dbateman parents: 5775 diff changeset	6966 SparseMatrix::solve (MatrixType &mattype, const ComplexMatrix& b,
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6967 octave_idx_type& err, double& rcond,
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6968 solve_singularity_handler sing_handler,
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6969 bool singular_fallback) const
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	6970 {
5681 233d98d95659 [project @ 2006-03-16 17:48:55 by dbateman] dbateman parents: 5630 diff changeset	6971 ComplexMatrix retval;
5322 22994a5730f9 [project @ 2005-04-29 13:04:24 by dbateman] dbateman parents: 5307 diff changeset	6972 int typ = mattype.type (false);
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	6973
5785 6b9cec830d72 [project @ 2006-05-03 19:32:46 by dbateman] dbateman parents: 5775 diff changeset	6974 if (typ == MatrixType::Unknown)
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	6975 typ = mattype.type (*this);
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	6976
5785 6b9cec830d72 [project @ 2006-05-03 19:32:46 by dbateman] dbateman parents: 5775 diff changeset	6977 if (typ == MatrixType::Diagonal \|\| typ == MatrixType::Permuted_Diagonal)
5681 233d98d95659 [project @ 2006-03-16 17:48:55 by dbateman] dbateman parents: 5630 diff changeset	6978 retval = dsolve (mattype, b, err, rcond, sing_handler, false);
5785 6b9cec830d72 [project @ 2006-05-03 19:32:46 by dbateman] dbateman parents: 5775 diff changeset	6979 else if (typ == MatrixType::Upper \|\| typ == MatrixType::Permuted_Upper)
5681 233d98d95659 [project @ 2006-03-16 17:48:55 by dbateman] dbateman parents: 5630 diff changeset	6980 retval = utsolve (mattype, b, err, rcond, sing_handler, false);
5785 6b9cec830d72 [project @ 2006-05-03 19:32:46 by dbateman] dbateman parents: 5775 diff changeset	6981 else if (typ == MatrixType::Lower \|\| typ == MatrixType::Permuted_Lower)
5681 233d98d95659 [project @ 2006-03-16 17:48:55 by dbateman] dbateman parents: 5630 diff changeset	6982 retval = ltsolve (mattype, b, err, rcond, sing_handler, false);
5785 6b9cec830d72 [project @ 2006-05-03 19:32:46 by dbateman] dbateman parents: 5775 diff changeset	6983 else if (typ == MatrixType::Banded \|\| typ == MatrixType::Banded_Hermitian)
5681 233d98d95659 [project @ 2006-03-16 17:48:55 by dbateman] dbateman parents: 5630 diff changeset	6984 retval = bsolve (mattype, b, err, rcond, sing_handler, false);
5785 6b9cec830d72 [project @ 2006-05-03 19:32:46 by dbateman] dbateman parents: 5775 diff changeset	6985 else if (typ == MatrixType::Tridiagonal \|\|
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	6986 typ == MatrixType::Tridiagonal_Hermitian)
5681 233d98d95659 [project @ 2006-03-16 17:48:55 by dbateman] dbateman parents: 5630 diff changeset	6987 retval = trisolve (mattype, b, err, rcond, sing_handler, false);
5785 6b9cec830d72 [project @ 2006-05-03 19:32:46 by dbateman] dbateman parents: 5775 diff changeset	6988 else if (typ == MatrixType::Full \|\| typ == MatrixType::Hermitian)
5681 233d98d95659 [project @ 2006-03-16 17:48:55 by dbateman] dbateman parents: 5630 diff changeset	6989 retval = fsolve (mattype, b, err, rcond, sing_handler, true);
5785 6b9cec830d72 [project @ 2006-05-03 19:32:46 by dbateman] dbateman parents: 5775 diff changeset	6990 else if (typ != MatrixType::Rectangular)
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	6991 {
5681 233d98d95659 [project @ 2006-03-16 17:48:55 by dbateman] dbateman parents: 5630 diff changeset	6992 (*current_liboctave_error_handler) ("unknown matrix type");
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	6993 return ComplexMatrix ();
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	6994 }
5681 233d98d95659 [project @ 2006-03-16 17:48:55 by dbateman] dbateman parents: 5630 diff changeset	6995
5785 6b9cec830d72 [project @ 2006-05-03 19:32:46 by dbateman] dbateman parents: 5775 diff changeset	6996 if (singular_fallback && mattype.type(false) == MatrixType::Rectangular)
5681 233d98d95659 [project @ 2006-03-16 17:48:55 by dbateman] dbateman parents: 5630 diff changeset	6997 {
233d98d95659 [project @ 2006-03-16 17:48:55 by dbateman] dbateman parents: 5630 diff changeset	6998 rcond = 1.;
233d98d95659 [project @ 2006-03-16 17:48:55 by dbateman] dbateman parents: 5630 diff changeset	6999 #ifdef USE_QRSOLVE
233d98d95659 [project @ 2006-03-16 17:48:55 by dbateman] dbateman parents: 5630 diff changeset	7000 retval = qrsolve (*this, b, err);
233d98d95659 [project @ 2006-03-16 17:48:55 by dbateman] dbateman parents: 5630 diff changeset	7001 #else
233d98d95659 [project @ 2006-03-16 17:48:55 by dbateman] dbateman parents: 5630 diff changeset	7002 retval = dmsolve<ComplexMatrix, SparseMatrix,
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	7003 ComplexMatrix> (*this, b, err);
5681 233d98d95659 [project @ 2006-03-16 17:48:55 by dbateman] dbateman parents: 5630 diff changeset	7004 #endif
233d98d95659 [project @ 2006-03-16 17:48:55 by dbateman] dbateman parents: 5630 diff changeset	7005 }
233d98d95659 [project @ 2006-03-16 17:48:55 by dbateman] dbateman parents: 5630 diff changeset	7006
233d98d95659 [project @ 2006-03-16 17:48:55 by dbateman] dbateman parents: 5630 diff changeset	7007 return retval;
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7008 }
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7009
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7010 SparseComplexMatrix
5785 6b9cec830d72 [project @ 2006-05-03 19:32:46 by dbateman] dbateman parents: 5775 diff changeset	7011 SparseMatrix::solve (MatrixType &mattype, const SparseComplexMatrix& b) const
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7012 {
5275 23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe] jwe parents: 5261 diff changeset	7013 octave_idx_type info;
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7014 double rcond;
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7015 return solve (mattype, b, info, rcond, 0);
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7016 }
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7017
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7018 SparseComplexMatrix
5785 6b9cec830d72 [project @ 2006-05-03 19:32:46 by dbateman] dbateman parents: 5775 diff changeset	7019 SparseMatrix::solve (MatrixType &mattype, const SparseComplexMatrix& b,
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	7020 octave_idx_type& info) const
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7021 {
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7022 double rcond;
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7023 return solve (mattype, b, info, rcond, 0);
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7024 }
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7025
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7026 SparseComplexMatrix
5785 6b9cec830d72 [project @ 2006-05-03 19:32:46 by dbateman] dbateman parents: 5775 diff changeset	7027 SparseMatrix::solve (MatrixType &mattype, const SparseComplexMatrix& b,
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	7028 octave_idx_type& info, double& rcond) const
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7029 {
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7030 return solve (mattype, b, info, rcond, 0);
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7031 }
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7032
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7033 SparseComplexMatrix
5785 6b9cec830d72 [project @ 2006-05-03 19:32:46 by dbateman] dbateman parents: 5775 diff changeset	7034 SparseMatrix::solve (MatrixType &mattype, const SparseComplexMatrix& b,
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	7035 octave_idx_type& err, double& rcond,
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	7036 solve_singularity_handler sing_handler,
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	7037 bool singular_fallback) const
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7038 {
5681 233d98d95659 [project @ 2006-03-16 17:48:55 by dbateman] dbateman parents: 5630 diff changeset	7039 SparseComplexMatrix retval;
5322 22994a5730f9 [project @ 2005-04-29 13:04:24 by dbateman] dbateman parents: 5307 diff changeset	7040 int typ = mattype.type (false);
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7041
5785 6b9cec830d72 [project @ 2006-05-03 19:32:46 by dbateman] dbateman parents: 5775 diff changeset	7042 if (typ == MatrixType::Unknown)
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7043 typ = mattype.type (*this);
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7044
5785 6b9cec830d72 [project @ 2006-05-03 19:32:46 by dbateman] dbateman parents: 5775 diff changeset	7045 if (typ == MatrixType::Diagonal \|\| typ == MatrixType::Permuted_Diagonal)
5681 233d98d95659 [project @ 2006-03-16 17:48:55 by dbateman] dbateman parents: 5630 diff changeset	7046 retval = dsolve (mattype, b, err, rcond, sing_handler, false);
5785 6b9cec830d72 [project @ 2006-05-03 19:32:46 by dbateman] dbateman parents: 5775 diff changeset	7047 else if (typ == MatrixType::Upper \|\| typ == MatrixType::Permuted_Upper)
5681 233d98d95659 [project @ 2006-03-16 17:48:55 by dbateman] dbateman parents: 5630 diff changeset	7048 retval = utsolve (mattype, b, err, rcond, sing_handler, false);
5785 6b9cec830d72 [project @ 2006-05-03 19:32:46 by dbateman] dbateman parents: 5775 diff changeset	7049 else if (typ == MatrixType::Lower \|\| typ == MatrixType::Permuted_Lower)
5681 233d98d95659 [project @ 2006-03-16 17:48:55 by dbateman] dbateman parents: 5630 diff changeset	7050 retval = ltsolve (mattype, b, err, rcond, sing_handler, false);
5785 6b9cec830d72 [project @ 2006-05-03 19:32:46 by dbateman] dbateman parents: 5775 diff changeset	7051 else if (typ == MatrixType::Banded \|\| typ == MatrixType::Banded_Hermitian)
5681 233d98d95659 [project @ 2006-03-16 17:48:55 by dbateman] dbateman parents: 5630 diff changeset	7052 retval = bsolve (mattype, b, err, rcond, sing_handler, false);
5785 6b9cec830d72 [project @ 2006-05-03 19:32:46 by dbateman] dbateman parents: 5775 diff changeset	7053 else if (typ == MatrixType::Tridiagonal \|\|
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	7054 typ == MatrixType::Tridiagonal_Hermitian)
5681 233d98d95659 [project @ 2006-03-16 17:48:55 by dbateman] dbateman parents: 5630 diff changeset	7055 retval = trisolve (mattype, b, err, rcond, sing_handler, false);
5785 6b9cec830d72 [project @ 2006-05-03 19:32:46 by dbateman] dbateman parents: 5775 diff changeset	7056 else if (typ == MatrixType::Full \|\| typ == MatrixType::Hermitian)
5681 233d98d95659 [project @ 2006-03-16 17:48:55 by dbateman] dbateman parents: 5630 diff changeset	7057 retval = fsolve (mattype, b, err, rcond, sing_handler, true);
5785 6b9cec830d72 [project @ 2006-05-03 19:32:46 by dbateman] dbateman parents: 5775 diff changeset	7058 else if (typ != MatrixType::Rectangular)
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7059 {
5681 233d98d95659 [project @ 2006-03-16 17:48:55 by dbateman] dbateman parents: 5630 diff changeset	7060 (*current_liboctave_error_handler) ("unknown matrix type");
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7061 return SparseComplexMatrix ();
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7062 }
5681 233d98d95659 [project @ 2006-03-16 17:48:55 by dbateman] dbateman parents: 5630 diff changeset	7063
5785 6b9cec830d72 [project @ 2006-05-03 19:32:46 by dbateman] dbateman parents: 5775 diff changeset	7064 if (singular_fallback && mattype.type(false) == MatrixType::Rectangular)
5681 233d98d95659 [project @ 2006-03-16 17:48:55 by dbateman] dbateman parents: 5630 diff changeset	7065 {
233d98d95659 [project @ 2006-03-16 17:48:55 by dbateman] dbateman parents: 5630 diff changeset	7066 rcond = 1.;
233d98d95659 [project @ 2006-03-16 17:48:55 by dbateman] dbateman parents: 5630 diff changeset	7067 #ifdef USE_QRSOLVE
233d98d95659 [project @ 2006-03-16 17:48:55 by dbateman] dbateman parents: 5630 diff changeset	7068 retval = qrsolve (*this, b, err);
233d98d95659 [project @ 2006-03-16 17:48:55 by dbateman] dbateman parents: 5630 diff changeset	7069 #else
233d98d95659 [project @ 2006-03-16 17:48:55 by dbateman] dbateman parents: 5630 diff changeset	7070 retval = dmsolve<SparseComplexMatrix, SparseMatrix,
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	7071 SparseComplexMatrix> (*this, b, err);
5681 233d98d95659 [project @ 2006-03-16 17:48:55 by dbateman] dbateman parents: 5630 diff changeset	7072 #endif
233d98d95659 [project @ 2006-03-16 17:48:55 by dbateman] dbateman parents: 5630 diff changeset	7073 }
233d98d95659 [project @ 2006-03-16 17:48:55 by dbateman] dbateman parents: 5630 diff changeset	7074
233d98d95659 [project @ 2006-03-16 17:48:55 by dbateman] dbateman parents: 5630 diff changeset	7075 return retval;
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7076 }
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7077
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7078 ColumnVector
5785 6b9cec830d72 [project @ 2006-05-03 19:32:46 by dbateman] dbateman parents: 5775 diff changeset	7079 SparseMatrix::solve (MatrixType &mattype, const ColumnVector& b) const
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7080 {
5275 23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe] jwe parents: 5261 diff changeset	7081 octave_idx_type info; double rcond;
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7082 return solve (mattype, b, info, rcond);
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7083 }
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7084
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7085 ColumnVector
5785 6b9cec830d72 [project @ 2006-05-03 19:32:46 by dbateman] dbateman parents: 5775 diff changeset	7086 SparseMatrix::solve (MatrixType &mattype, const ColumnVector& b, octave_idx_type& info) const
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7087 {
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7088 double rcond;
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7089 return solve (mattype, b, info, rcond);
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7090 }
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7091
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7092 ColumnVector
5785 6b9cec830d72 [project @ 2006-05-03 19:32:46 by dbateman] dbateman parents: 5775 diff changeset	7093 SparseMatrix::solve (MatrixType &mattype, const ColumnVector& b, octave_idx_type& info, double& rcond) const
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7094 {
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7095 return solve (mattype, b, info, rcond, 0);
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7096 }
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7097
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7098 ColumnVector
5785 6b9cec830d72 [project @ 2006-05-03 19:32:46 by dbateman] dbateman parents: 5775 diff changeset	7099 SparseMatrix::solve (MatrixType &mattype, const ColumnVector& b, octave_idx_type& info, double& rcond,
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	7100 solve_singularity_handler sing_handler) const
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7101 {
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7102 Matrix tmp (b);
5275 23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe] jwe parents: 5261 diff changeset	7103 return solve (mattype, tmp, info, rcond, sing_handler).column (static_cast<octave_idx_type> (0));
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7104 }
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7105
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7106 ComplexColumnVector
5785 6b9cec830d72 [project @ 2006-05-03 19:32:46 by dbateman] dbateman parents: 5775 diff changeset	7107 SparseMatrix::solve (MatrixType &mattype, const ComplexColumnVector& b) const
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7108 {
5275 23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe] jwe parents: 5261 diff changeset	7109 octave_idx_type info;
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7110 double rcond;
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7111 return solve (mattype, b, info, rcond, 0);
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7112 }
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7113
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7114 ComplexColumnVector
5785 6b9cec830d72 [project @ 2006-05-03 19:32:46 by dbateman] dbateman parents: 5775 diff changeset	7115 SparseMatrix::solve (MatrixType &mattype, const ComplexColumnVector& b, octave_idx_type& info) const
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7116 {
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7117 double rcond;
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7118 return solve (mattype, b, info, rcond, 0);
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7119 }
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7120
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7121 ComplexColumnVector
5785 6b9cec830d72 [project @ 2006-05-03 19:32:46 by dbateman] dbateman parents: 5775 diff changeset	7122 SparseMatrix::solve (MatrixType &mattype, const ComplexColumnVector& b, octave_idx_type& info,
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	7123 double& rcond) const
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7124 {
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7125 return solve (mattype, b, info, rcond, 0);
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7126 }
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7127
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7128 ComplexColumnVector
5785 6b9cec830d72 [project @ 2006-05-03 19:32:46 by dbateman] dbateman parents: 5775 diff changeset	7129 SparseMatrix::solve (MatrixType &mattype, const ComplexColumnVector& b, octave_idx_type& info, double& rcond,
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	7130 solve_singularity_handler sing_handler) const
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7131 {
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7132 ComplexMatrix tmp (b);
5275 23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe] jwe parents: 5261 diff changeset	7133 return solve (mattype, tmp, info, rcond, sing_handler).column (static_cast<octave_idx_type> (0));
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7134 }
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7135
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7136 Matrix
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7137 SparseMatrix::solve (const Matrix& b) const
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7138 {
5275 23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe] jwe parents: 5261 diff changeset	7139 octave_idx_type info;
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7140 double rcond;
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7141 return solve (b, info, rcond, 0);
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7142 }
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7143
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7144 Matrix
5275 23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe] jwe parents: 5261 diff changeset	7145 SparseMatrix::solve (const Matrix& b, octave_idx_type& info) const
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7146 {
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7147 double rcond;
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7148 return solve (b, info, rcond, 0);
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7149 }
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7150
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7151 Matrix
5275 23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe] jwe parents: 5261 diff changeset	7152 SparseMatrix::solve (const Matrix& b, octave_idx_type& info,
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	7153 double& rcond) const
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7154 {
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7155 return solve (b, info, rcond, 0);
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7156 }
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7157
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7158 Matrix
5275 23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe] jwe parents: 5261 diff changeset	7159 SparseMatrix::solve (const Matrix& b, octave_idx_type& err,
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	7160 double& rcond,
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	7161 solve_singularity_handler sing_handler) const
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7162 {
5785 6b9cec830d72 [project @ 2006-05-03 19:32:46 by dbateman] dbateman parents: 5775 diff changeset	7163 MatrixType mattype (*this);
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7164 return solve (mattype, b, err, rcond, sing_handler);
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7165 }
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7166
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7167 SparseMatrix
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7168 SparseMatrix::solve (const SparseMatrix& b) const
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7169 {
5275 23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe] jwe parents: 5261 diff changeset	7170 octave_idx_type info;
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7171 double rcond;
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7172 return solve (b, info, rcond, 0);
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7173 }
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7174
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7175 SparseMatrix
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7176 SparseMatrix::solve (const SparseMatrix& b,
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	7177 octave_idx_type& info) const
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7178 {
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7179 double rcond;
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7180 return solve (b, info, rcond, 0);
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7181 }
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7182
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7183 SparseMatrix
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7184 SparseMatrix::solve (const SparseMatrix& b,
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	7185 octave_idx_type& info, double& rcond) const
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7186 {
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7187 return solve (b, info, rcond, 0);
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7188 }
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7189
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7190 SparseMatrix
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7191 SparseMatrix::solve (const SparseMatrix& b,
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	7192 octave_idx_type& err, double& rcond,
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	7193 solve_singularity_handler sing_handler) const
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7194 {
5785 6b9cec830d72 [project @ 2006-05-03 19:32:46 by dbateman] dbateman parents: 5775 diff changeset	7195 MatrixType mattype (*this);
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7196 return solve (mattype, b, err, rcond, sing_handler);
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7197 }
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7198
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7199 ComplexMatrix
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7200 SparseMatrix::solve (const ComplexMatrix& b,
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	7201 octave_idx_type& info) const
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7202 {
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7203 double rcond;
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7204 return solve (b, info, rcond, 0);
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7205 }
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7206
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7207 ComplexMatrix
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7208 SparseMatrix::solve (const ComplexMatrix& b,
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	7209 octave_idx_type& info, double& rcond) const
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7210 {
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7211 return solve (b, info, rcond, 0);
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7212 }
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7213
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7214 ComplexMatrix
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7215 SparseMatrix::solve (const ComplexMatrix& b,
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	7216 octave_idx_type& err, double& rcond,
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	7217 solve_singularity_handler sing_handler) const
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7218 {
5785 6b9cec830d72 [project @ 2006-05-03 19:32:46 by dbateman] dbateman parents: 5775 diff changeset	7219 MatrixType mattype (*this);
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7220 return solve (mattype, b, err, rcond, sing_handler);
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7221 }
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7222
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7223 SparseComplexMatrix
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7224 SparseMatrix::solve (const SparseComplexMatrix& b) const
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7225 {
5275 23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe] jwe parents: 5261 diff changeset	7226 octave_idx_type info;
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7227 double rcond;
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7228 return solve (b, info, rcond, 0);
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7229 }
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7230
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7231 SparseComplexMatrix
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7232 SparseMatrix::solve (const SparseComplexMatrix& b,
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	7233 octave_idx_type& info) const
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7234 {
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7235 double rcond;
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7236 return solve (b, info, rcond, 0);
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7237 }
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7238
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7239 SparseComplexMatrix
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7240 SparseMatrix::solve (const SparseComplexMatrix& b,
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	7241 octave_idx_type& info, double& rcond) const
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7242 {
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7243 return solve (b, info, rcond, 0);
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7244 }
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7245
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7246 SparseComplexMatrix
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7247 SparseMatrix::solve (const SparseComplexMatrix& b,
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	7248 octave_idx_type& err, double& rcond,
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	7249 solve_singularity_handler sing_handler) const
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7250 {
5785 6b9cec830d72 [project @ 2006-05-03 19:32:46 by dbateman] dbateman parents: 5775 diff changeset	7251 MatrixType mattype (*this);
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7252 return solve (mattype, b, err, rcond, sing_handler);
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7253 }
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7254
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7255 ColumnVector
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7256 SparseMatrix::solve (const ColumnVector& b) const
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7257 {
5275 23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe] jwe parents: 5261 diff changeset	7258 octave_idx_type info; double rcond;
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7259 return solve (b, info, rcond);
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7260 }
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7261
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7262 ColumnVector
5275 23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe] jwe parents: 5261 diff changeset	7263 SparseMatrix::solve (const ColumnVector& b, octave_idx_type& info) const
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7264 {
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7265 double rcond;
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7266 return solve (b, info, rcond);
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7267 }
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7268
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7269 ColumnVector
5275 23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe] jwe parents: 5261 diff changeset	7270 SparseMatrix::solve (const ColumnVector& b, octave_idx_type& info, double& rcond) const
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7271 {
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7272 return solve (b, info, rcond, 0);
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7273 }
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7274
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7275 ColumnVector
5275 23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe] jwe parents: 5261 diff changeset	7276 SparseMatrix::solve (const ColumnVector& b, octave_idx_type& info, double& rcond,
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	7277 solve_singularity_handler sing_handler) const
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7278 {
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7279 Matrix tmp (b);
5275 23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe] jwe parents: 5261 diff changeset	7280 return solve (tmp, info, rcond, sing_handler).column (static_cast<octave_idx_type> (0));
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7281 }
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7282
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7283 ComplexColumnVector
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7284 SparseMatrix::solve (const ComplexColumnVector& b) const
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7285 {
5275 23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe] jwe parents: 5261 diff changeset	7286 octave_idx_type info;
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7287 double rcond;
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7288 return solve (b, info, rcond, 0);
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7289 }
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7290
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7291 ComplexColumnVector
5275 23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe] jwe parents: 5261 diff changeset	7292 SparseMatrix::solve (const ComplexColumnVector& b, octave_idx_type& info) const
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7293 {
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7294 double rcond;
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7295 return solve (b, info, rcond, 0);
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7296 }
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7297
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7298 ComplexColumnVector
5275 23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe] jwe parents: 5261 diff changeset	7299 SparseMatrix::solve (const ComplexColumnVector& b, octave_idx_type& info,
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	7300 double& rcond) const
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7301 {
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7302 return solve (b, info, rcond, 0);
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7303 }
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7304
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7305 ComplexColumnVector
5275 23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe] jwe parents: 5261 diff changeset	7306 SparseMatrix::solve (const ComplexColumnVector& b, octave_idx_type& info, double& rcond,
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	7307 solve_singularity_handler sing_handler) const
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7308 {
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7309 ComplexMatrix tmp (b);
5275 23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe] jwe parents: 5261 diff changeset	7310 return solve (tmp, info, rcond, sing_handler).column (static_cast<octave_idx_type> (0));
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7311 }
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7312
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7313 // other operations.
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7314
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7315 bool
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7316 SparseMatrix::any_element_is_negative (bool neg_zero) const
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7317 {
5681 233d98d95659 [project @ 2006-03-16 17:48:55 by dbateman] dbateman parents: 5630 diff changeset	7318 octave_idx_type nel = nnz ();
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7319
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7320 if (neg_zero)
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7321 {
5275 23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe] jwe parents: 5261 diff changeset	7322 for (octave_idx_type i = 0; i < nel; i++)
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	7323 if (lo_ieee_signbit (data (i)))
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	7324 return true;
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7325 }
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7326 else
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7327 {
5275 23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe] jwe parents: 5261 diff changeset	7328 for (octave_idx_type i = 0; i < nel; i++)
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	7329 if (data (i) < 0)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	7330 return true;
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7331 }
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7332
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7333 return false;
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7334 }
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7335
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7336 bool
7922 935be827eaf8 error for NaN values in & and \| expressions John W. Eaton <jwe@octave.org> parents: 7802 diff changeset	7337 SparseMatrix::any_element_is_nan (void) const
935be827eaf8 error for NaN values in & and \| expressions John W. Eaton <jwe@octave.org> parents: 7802 diff changeset	7338 {
935be827eaf8 error for NaN values in & and \| expressions John W. Eaton <jwe@octave.org> parents: 7802 diff changeset	7339 octave_idx_type nel = nnz ();
935be827eaf8 error for NaN values in & and \| expressions John W. Eaton <jwe@octave.org> parents: 7802 diff changeset	7340
935be827eaf8 error for NaN values in & and \| expressions John W. Eaton <jwe@octave.org> parents: 7802 diff changeset	7341 for (octave_idx_type i = 0; i < nel; i++)
935be827eaf8 error for NaN values in & and \| expressions John W. Eaton <jwe@octave.org> parents: 7802 diff changeset	7342 {
935be827eaf8 error for NaN values in & and \| expressions John W. Eaton <jwe@octave.org> parents: 7802 diff changeset	7343 double val = data (i);
935be827eaf8 error for NaN values in & and \| expressions John W. Eaton <jwe@octave.org> parents: 7802 diff changeset	7344 if (xisnan (val))
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	7345 return true;
7922 935be827eaf8 error for NaN values in & and \| expressions John W. Eaton <jwe@octave.org> parents: 7802 diff changeset	7346 }
935be827eaf8 error for NaN values in & and \| expressions John W. Eaton <jwe@octave.org> parents: 7802 diff changeset	7347
935be827eaf8 error for NaN values in & and \| expressions John W. Eaton <jwe@octave.org> parents: 7802 diff changeset	7348 return false;
935be827eaf8 error for NaN values in & and \| expressions John W. Eaton <jwe@octave.org> parents: 7802 diff changeset	7349 }
935be827eaf8 error for NaN values in & and \| expressions John W. Eaton <jwe@octave.org> parents: 7802 diff changeset	7350
935be827eaf8 error for NaN values in & and \| expressions John W. Eaton <jwe@octave.org> parents: 7802 diff changeset	7351 bool
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7352 SparseMatrix::any_element_is_inf_or_nan (void) const
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7353 {
5681 233d98d95659 [project @ 2006-03-16 17:48:55 by dbateman] dbateman parents: 5630 diff changeset	7354 octave_idx_type nel = nnz ();
5275 23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe] jwe parents: 5261 diff changeset	7355
23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe] jwe parents: 5261 diff changeset	7356 for (octave_idx_type i = 0; i < nel; i++)
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7357 {
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7358 double val = data (i);
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7359 if (xisinf (val) \|\| xisnan (val))
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	7360 return true;
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7361 }
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7362
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7363 return false;
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7364 }
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7365
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7366 bool
9852 aabf7a8c2e57 implement sparse logical conversion Jaroslav Hajek <highegg@gmail.com> parents: 9812 diff changeset	7367 SparseMatrix::any_element_not_one_or_zero (void) const
aabf7a8c2e57 implement sparse logical conversion Jaroslav Hajek <highegg@gmail.com> parents: 9812 diff changeset	7368 {
aabf7a8c2e57 implement sparse logical conversion Jaroslav Hajek <highegg@gmail.com> parents: 9812 diff changeset	7369 octave_idx_type nel = nnz ();
aabf7a8c2e57 implement sparse logical conversion Jaroslav Hajek <highegg@gmail.com> parents: 9812 diff changeset	7370
aabf7a8c2e57 implement sparse logical conversion Jaroslav Hajek <highegg@gmail.com> parents: 9812 diff changeset	7371 for (octave_idx_type i = 0; i < nel; i++)
aabf7a8c2e57 implement sparse logical conversion Jaroslav Hajek <highegg@gmail.com> parents: 9812 diff changeset	7372 {
aabf7a8c2e57 implement sparse logical conversion Jaroslav Hajek <highegg@gmail.com> parents: 9812 diff changeset	7373 double val = data (i);
aabf7a8c2e57 implement sparse logical conversion Jaroslav Hajek <highegg@gmail.com> parents: 9812 diff changeset	7374 if (val != 0.0 && val != 1.0)
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	7375 return true;
9852 aabf7a8c2e57 implement sparse logical conversion Jaroslav Hajek <highegg@gmail.com> parents: 9812 diff changeset	7376 }
aabf7a8c2e57 implement sparse logical conversion Jaroslav Hajek <highegg@gmail.com> parents: 9812 diff changeset	7377
aabf7a8c2e57 implement sparse logical conversion Jaroslav Hajek <highegg@gmail.com> parents: 9812 diff changeset	7378 return false;
aabf7a8c2e57 implement sparse logical conversion Jaroslav Hajek <highegg@gmail.com> parents: 9812 diff changeset	7379 }
aabf7a8c2e57 implement sparse logical conversion Jaroslav Hajek <highegg@gmail.com> parents: 9812 diff changeset	7380
aabf7a8c2e57 implement sparse logical conversion Jaroslav Hajek <highegg@gmail.com> parents: 9812 diff changeset	7381 bool
6989 2d326000e09b [project @ 2007-10-09 20:32:42 by jwe] jwe parents: 6924 diff changeset	7382 SparseMatrix::all_elements_are_zero (void) const
2d326000e09b [project @ 2007-10-09 20:32:42 by jwe] jwe parents: 6924 diff changeset	7383 {
2d326000e09b [project @ 2007-10-09 20:32:42 by jwe] jwe parents: 6924 diff changeset	7384 octave_idx_type nel = nnz ();
2d326000e09b [project @ 2007-10-09 20:32:42 by jwe] jwe parents: 6924 diff changeset	7385
2d326000e09b [project @ 2007-10-09 20:32:42 by jwe] jwe parents: 6924 diff changeset	7386 for (octave_idx_type i = 0; i < nel; i++)
2d326000e09b [project @ 2007-10-09 20:32:42 by jwe] jwe parents: 6924 diff changeset	7387 if (data (i) != 0)
2d326000e09b [project @ 2007-10-09 20:32:42 by jwe] jwe parents: 6924 diff changeset	7388 return false;
2d326000e09b [project @ 2007-10-09 20:32:42 by jwe] jwe parents: 6924 diff changeset	7389
2d326000e09b [project @ 2007-10-09 20:32:42 by jwe] jwe parents: 6924 diff changeset	7390 return true;
2d326000e09b [project @ 2007-10-09 20:32:42 by jwe] jwe parents: 6924 diff changeset	7391 }
2d326000e09b [project @ 2007-10-09 20:32:42 by jwe] jwe parents: 6924 diff changeset	7392
2d326000e09b [project @ 2007-10-09 20:32:42 by jwe] jwe parents: 6924 diff changeset	7393 bool
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7394 SparseMatrix::all_elements_are_int_or_inf_or_nan (void) const
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7395 {
5681 233d98d95659 [project @ 2006-03-16 17:48:55 by dbateman] dbateman parents: 5630 diff changeset	7396 octave_idx_type nel = nnz ();
5275 23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe] jwe parents: 5261 diff changeset	7397
23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe] jwe parents: 5261 diff changeset	7398 for (octave_idx_type i = 0; i < nel; i++)
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7399 {
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7400 double val = data (i);
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7401 if (xisnan (val) \|\| D_NINT (val) == val)
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	7402 continue;
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7403 else
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	7404 return false;
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7405 }
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7406
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7407 return true;
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7408 }
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7409
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7410 // Return nonzero if any element of M is not an integer. Also extract
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7411 // the largest and smallest values and return them in MAX_VAL and MIN_VAL.
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7412
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7413 bool
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7414 SparseMatrix::all_integers (double& max_val, double& min_val) const
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7415 {
5681 233d98d95659 [project @ 2006-03-16 17:48:55 by dbateman] dbateman parents: 5630 diff changeset	7416 octave_idx_type nel = nnz ();
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7417
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7418 if (nel == 0)
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7419 return false;
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7420
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7421 max_val = data (0);
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7422 min_val = data (0);
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7423
5275 23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe] jwe parents: 5261 diff changeset	7424 for (octave_idx_type i = 0; i < nel; i++)
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7425 {
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7426 double val = data (i);
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7427
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7428 if (val > max_val)
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	7429 max_val = val;
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7430
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7431 if (val < min_val)
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	7432 min_val = val;
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7433
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7434 if (D_NINT (val) != val)
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	7435 return false;
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7436 }
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7437
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7438 return true;
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7439 }
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7440
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7441 bool
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7442 SparseMatrix::too_large_for_float (void) const
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7443 {
5681 233d98d95659 [project @ 2006-03-16 17:48:55 by dbateman] dbateman parents: 5630 diff changeset	7444 octave_idx_type nel = nnz ();
5275 23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe] jwe parents: 5261 diff changeset	7445
23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe] jwe parents: 5261 diff changeset	7446 for (octave_idx_type i = 0; i < nel; i++)
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7447 {
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7448 double val = data (i);
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7449
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7450 if (val > FLT_MAX \|\| val < FLT_MIN)
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	7451 return true;
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7452 }
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7453
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7454 return false;
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7455 }
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7456
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7457 SparseBoolMatrix
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7458 SparseMatrix::operator ! (void) const
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7459 {
11130 7c573eb981eb consistently give error for operator not applied to NaN values John W. Eaton <jwe@octave.org> parents: 10785 diff changeset	7460 if (any_element_is_nan ())
7c573eb981eb consistently give error for operator not applied to NaN values John W. Eaton <jwe@octave.org> parents: 10785 diff changeset	7461 gripe_nan_to_logical_conversion ();
7c573eb981eb consistently give error for operator not applied to NaN values John W. Eaton <jwe@octave.org> parents: 10785 diff changeset	7462
5275 23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe] jwe parents: 5261 diff changeset	7463 octave_idx_type nr = rows ();
23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe] jwe parents: 5261 diff changeset	7464 octave_idx_type nc = cols ();
5681 233d98d95659 [project @ 2006-03-16 17:48:55 by dbateman] dbateman parents: 5630 diff changeset	7465 octave_idx_type nz1 = nnz ();
5275 23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe] jwe parents: 5261 diff changeset	7466 octave_idx_type nz2 = nr*nc - nz1;
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7467
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7468 SparseBoolMatrix r (nr, nc, nz2);
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7469
5275 23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe] jwe parents: 5261 diff changeset	7470 octave_idx_type ii = 0;
23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe] jwe parents: 5261 diff changeset	7471 octave_idx_type jj = 0;
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7472 r.cidx (0) = 0;
5275 23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe] jwe parents: 5261 diff changeset	7473 for (octave_idx_type i = 0; i < nc; i++)
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7474 {
5275 23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe] jwe parents: 5261 diff changeset	7475 for (octave_idx_type j = 0; j < nr; j++)
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	7476 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	7477 if (jj < cidx(i+1) && ridx(jj) == j)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	7478 jj++;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	7479 else
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	7480 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	7481 r.data(ii) = true;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	7482 r.ridx(ii++) = j;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	7483 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	7484 }
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7485 r.cidx (i+1) = ii;
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7486 }
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7487
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7488 return r;
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7489 }
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7490
5775 ace8d8d26933 [project @ 2006-04-24 19:13:06 by jwe] jwe parents: 5760 diff changeset	7491 // FIXME Do these really belong here? Maybe they should be
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7492 // in a base class?
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7493
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7494 SparseBoolMatrix
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7495 SparseMatrix::all (int dim) const
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7496 {
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7497 SPARSE_ALL_OP (dim);
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7498 }
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7499
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7500 SparseBoolMatrix
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7501 SparseMatrix::any (int dim) const
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7502 {
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7503 SPARSE_ANY_OP (dim);
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7504 }
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7505
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7506 SparseMatrix
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7507 SparseMatrix::cumprod (int dim) const
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7508 {
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7509 SPARSE_CUMPROD (SparseMatrix, double, cumprod);
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7510 }
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7511
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7512 SparseMatrix
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7513 SparseMatrix::cumsum (int dim) const
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7514 {
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7515 SPARSE_CUMSUM (SparseMatrix, double, cumsum);
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7516 }
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7517
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7518 SparseMatrix
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7519 SparseMatrix::prod (int dim) const
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7520 {
7269 3fade00a6ac7 [project @ 2007-12-07 19:26:20 by jwe] jwe parents: 7036 diff changeset	7521 if ((rows() == 1 && dim == -1) \|\| dim == 1)
3fade00a6ac7 [project @ 2007-12-07 19:26:20 by jwe] jwe parents: 7036 diff changeset	7522 return transpose (). prod (0). transpose();
3fade00a6ac7 [project @ 2007-12-07 19:26:20 by jwe] jwe parents: 7036 diff changeset	7523 else
3fade00a6ac7 [project @ 2007-12-07 19:26:20 by jwe] jwe parents: 7036 diff changeset	7524 {
3fade00a6ac7 [project @ 2007-12-07 19:26:20 by jwe] jwe parents: 7036 diff changeset	7525 SPARSE_REDUCTION_OP (SparseMatrix, double, *=,
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	7526 (cidx(j+1) - cidx(j) < nr ? 0.0 : 1.0), 1.0);
7269 3fade00a6ac7 [project @ 2007-12-07 19:26:20 by jwe] jwe parents: 7036 diff changeset	7527 }
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7528 }
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7529
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7530 SparseMatrix
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7531 SparseMatrix::sum (int dim) const
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7532 {
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7533 SPARSE_REDUCTION_OP (SparseMatrix, double, +=, 0.0, 0.0);
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7534 }
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7535
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7536 SparseMatrix
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7537 SparseMatrix::sumsq (int dim) const
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7538 {
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7539 #define ROW_EXPR \
7269 3fade00a6ac7 [project @ 2007-12-07 19:26:20 by jwe] jwe parents: 7036 diff changeset	7540 double d = data (i); \
3fade00a6ac7 [project @ 2007-12-07 19:26:20 by jwe] jwe parents: 7036 diff changeset	7541 tmp[ridx(i)] += d * d
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7542
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7543 #define COL_EXPR \
7269 3fade00a6ac7 [project @ 2007-12-07 19:26:20 by jwe] jwe parents: 7036 diff changeset	7544 double d = data (i); \
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7545 tmp[j] += d * d
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7546
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7547 SPARSE_BASE_REDUCTION_OP (SparseMatrix, double, ROW_EXPR, COL_EXPR,
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	7548 0.0, 0.0);
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7549
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7550 #undef ROW_EXPR
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7551 #undef COL_EXPR
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7552 }
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7553
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7554 SparseMatrix
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7555 SparseMatrix::abs (void) const
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7556 {
5681 233d98d95659 [project @ 2006-03-16 17:48:55 by dbateman] dbateman parents: 5630 diff changeset	7557 octave_idx_type nz = nnz ();
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7558
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7559 SparseMatrix retval (*this);
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7560
5275 23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe] jwe parents: 5261 diff changeset	7561 for (octave_idx_type i = 0; i < nz; i++)
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7562 retval.data(i) = fabs(retval.data(i));
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7563
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7564 return retval;
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7565 }
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7566
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7567 SparseMatrix
5275 23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe] jwe parents: 5261 diff changeset	7568 SparseMatrix::diag (octave_idx_type k) const
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7569 {
7620 36594d5bbe13 Move diag function into the octave_value class David Bateman <dbateman@free.fr> parents: 7602 diff changeset	7570 return MSparse<double>::diag (k);
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7571 }
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7572
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7573 Matrix
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7574 SparseMatrix::matrix_value (void) const
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7575 {
10431 5dd7a7bf4950 simplify sparse->full conversions in liboctave Jaroslav Hajek <highegg@gmail.com> parents: 10421 diff changeset	7576 return Sparse<double>::array_value ();
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7577 }
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7578
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7579 std::ostream&
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7580 operator << (std::ostream& os, const SparseMatrix& a)
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7581 {
5275 23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe] jwe parents: 5261 diff changeset	7582 octave_idx_type nc = a.cols ();
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7583
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7584 // add one to the printed indices to go from
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7585 // zero-based to one-based arrays
10550 c48b7048e720 style fixes John W. Eaton <jwe@octave.org> parents: 10521 diff changeset	7586 for (octave_idx_type j = 0; j < nc; j++)
c48b7048e720 style fixes John W. Eaton <jwe@octave.org> parents: 10521 diff changeset	7587 {
c48b7048e720 style fixes John W. Eaton <jwe@octave.org> parents: 10521 diff changeset	7588 octave_quit ();
c48b7048e720 style fixes John W. Eaton <jwe@octave.org> parents: 10521 diff changeset	7589 for (octave_idx_type i = a.cidx(j); i < a.cidx(j+1); i++)
c48b7048e720 style fixes John W. Eaton <jwe@octave.org> parents: 10521 diff changeset	7590 {
c48b7048e720 style fixes John W. Eaton <jwe@octave.org> parents: 10521 diff changeset	7591 os << a.ridx(i) + 1 << " " << j + 1 << " ";
c48b7048e720 style fixes John W. Eaton <jwe@octave.org> parents: 10521 diff changeset	7592 octave_write_double (os, a.data(i));
c48b7048e720 style fixes John W. Eaton <jwe@octave.org> parents: 10521 diff changeset	7593 os << "\n";
c48b7048e720 style fixes John W. Eaton <jwe@octave.org> parents: 10521 diff changeset	7594 }
c48b7048e720 style fixes John W. Eaton <jwe@octave.org> parents: 10521 diff changeset	7595 }
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7596
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7597 return os;
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7598 }
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7599
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7600 std::istream&
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7601 operator >> (std::istream& is, SparseMatrix& a)
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7602 {
9469 c6edba80dfae sanity checks for loading sparse matrices John W. Eaton <jwe@octave.org> parents: 9417 diff changeset	7603 typedef SparseMatrix::element_type elt_type;
c6edba80dfae sanity checks for loading sparse matrices John W. Eaton <jwe@octave.org> parents: 9417 diff changeset	7604
c6edba80dfae sanity checks for loading sparse matrices John W. Eaton <jwe@octave.org> parents: 9417 diff changeset	7605 return read_sparse_matrix<elt_type> (is, a, octave_read_value<double>);
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7606 }
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7607
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7608 SparseMatrix
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7609 SparseMatrix::squeeze (void) const
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7610 {
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7611 return MSparse<double>::squeeze ();
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7612 }
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7613
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7614 SparseMatrix
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7615 SparseMatrix::reshape (const dim_vector& new_dims) const
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7616 {
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7617 return MSparse<double>::reshape (new_dims);
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7618 }
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7619
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7620 SparseMatrix
5275 23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe] jwe parents: 5261 diff changeset	7621 SparseMatrix::permute (const Array<octave_idx_type>& vec, bool inv) const
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7622 {
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7623 return MSparse<double>::permute (vec, inv);
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7624 }
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7625
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7626 SparseMatrix
5275 23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe] jwe parents: 5261 diff changeset	7627 SparseMatrix::ipermute (const Array<octave_idx_type>& vec) const
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7628 {
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7629 return MSparse<double>::ipermute (vec);
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7630 }
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7631
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7632 // matrix by matrix -> matrix operations
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7633
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7634 SparseMatrix
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7635 operator * (const SparseMatrix& m, const SparseMatrix& a)
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7636 {
5681 233d98d95659 [project @ 2006-03-16 17:48:55 by dbateman] dbateman parents: 5630 diff changeset	7637 SPARSE_SPARSE_MUL (SparseMatrix, double, double);
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7638 }
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7639
5429 2042301733ce [project @ 2005-08-25 12:21:24 by dbateman] dbateman parents: 5404 diff changeset	7640 Matrix
2042301733ce [project @ 2005-08-25 12:21:24 by dbateman] dbateman parents: 5404 diff changeset	7641 operator * (const Matrix& m, const SparseMatrix& a)
2042301733ce [project @ 2005-08-25 12:21:24 by dbateman] dbateman parents: 5404 diff changeset	7642 {
5681 233d98d95659 [project @ 2006-03-16 17:48:55 by dbateman] dbateman parents: 5630 diff changeset	7643 FULL_SPARSE_MUL (Matrix, double, 0.);
5429 2042301733ce [project @ 2005-08-25 12:21:24 by dbateman] dbateman parents: 5404 diff changeset	7644 }
2042301733ce [project @ 2005-08-25 12:21:24 by dbateman] dbateman parents: 5404 diff changeset	7645
2042301733ce [project @ 2005-08-25 12:21:24 by dbateman] dbateman parents: 5404 diff changeset	7646 Matrix
7802 1a446f28ce68 implement optimized sparse-dense transposed multiplication Jaroslav Hajek <highegg@gmail.com> parents: 7776 diff changeset	7647 mul_trans (const Matrix& m, const SparseMatrix& a)
1a446f28ce68 implement optimized sparse-dense transposed multiplication Jaroslav Hajek <highegg@gmail.com> parents: 7776 diff changeset	7648 {
1a446f28ce68 implement optimized sparse-dense transposed multiplication Jaroslav Hajek <highegg@gmail.com> parents: 7776 diff changeset	7649 FULL_SPARSE_MUL_TRANS (Matrix, double, 0., );
1a446f28ce68 implement optimized sparse-dense transposed multiplication Jaroslav Hajek <highegg@gmail.com> parents: 7776 diff changeset	7650 }
1a446f28ce68 implement optimized sparse-dense transposed multiplication Jaroslav Hajek <highegg@gmail.com> parents: 7776 diff changeset	7651
1a446f28ce68 implement optimized sparse-dense transposed multiplication Jaroslav Hajek <highegg@gmail.com> parents: 7776 diff changeset	7652 Matrix
5429 2042301733ce [project @ 2005-08-25 12:21:24 by dbateman] dbateman parents: 5404 diff changeset	7653 operator * (const SparseMatrix& m, const Matrix& a)
2042301733ce [project @ 2005-08-25 12:21:24 by dbateman] dbateman parents: 5404 diff changeset	7654 {
5681 233d98d95659 [project @ 2006-03-16 17:48:55 by dbateman] dbateman parents: 5630 diff changeset	7655 SPARSE_FULL_MUL (Matrix, double, 0.);
5429 2042301733ce [project @ 2005-08-25 12:21:24 by dbateman] dbateman parents: 5404 diff changeset	7656 }
2042301733ce [project @ 2005-08-25 12:21:24 by dbateman] dbateman parents: 5404 diff changeset	7657
7802 1a446f28ce68 implement optimized sparse-dense transposed multiplication Jaroslav Hajek <highegg@gmail.com> parents: 7776 diff changeset	7658 Matrix
1a446f28ce68 implement optimized sparse-dense transposed multiplication Jaroslav Hajek <highegg@gmail.com> parents: 7776 diff changeset	7659 trans_mul (const SparseMatrix& m, const Matrix& a)
1a446f28ce68 implement optimized sparse-dense transposed multiplication Jaroslav Hajek <highegg@gmail.com> parents: 7776 diff changeset	7660 {
1a446f28ce68 implement optimized sparse-dense transposed multiplication Jaroslav Hajek <highegg@gmail.com> parents: 7776 diff changeset	7661 SPARSE_FULL_TRANS_MUL (Matrix, double, 0., );
1a446f28ce68 implement optimized sparse-dense transposed multiplication Jaroslav Hajek <highegg@gmail.com> parents: 7776 diff changeset	7662 }
1a446f28ce68 implement optimized sparse-dense transposed multiplication Jaroslav Hajek <highegg@gmail.com> parents: 7776 diff changeset	7663
8964 f4f4d65faaa0 Implement sparse * diagonal and diagonal * sparse operations, double-prec only. Jason Riedy <jason@acm.org> parents: 8951 diff changeset	7664 // diag * sparse and sparse * diag
f4f4d65faaa0 Implement sparse * diagonal and diagonal * sparse operations, double-prec only. Jason Riedy <jason@acm.org> parents: 8951 diff changeset	7665
f4f4d65faaa0 Implement sparse * diagonal and diagonal * sparse operations, double-prec only. Jason Riedy <jason@acm.org> parents: 8951 diff changeset	7666 SparseMatrix
f4f4d65faaa0 Implement sparse * diagonal and diagonal * sparse operations, double-prec only. Jason Riedy <jason@acm.org> parents: 8951 diff changeset	7667 operator * (const DiagMatrix& d, const SparseMatrix& a)
f4f4d65faaa0 Implement sparse * diagonal and diagonal * sparse operations, double-prec only. Jason Riedy <jason@acm.org> parents: 8951 diff changeset	7668 {
8967 5bbbf482909a fix omissions adjusting JR's patches Jaroslav Hajek <highegg@gmail.com> parents: 8966 diff changeset	7669 return do_mul_dm_sm<SparseMatrix> (d, a);
8964 f4f4d65faaa0 Implement sparse * diagonal and diagonal * sparse operations, double-prec only. Jason Riedy <jason@acm.org> parents: 8951 diff changeset	7670 }
f4f4d65faaa0 Implement sparse * diagonal and diagonal * sparse operations, double-prec only. Jason Riedy <jason@acm.org> parents: 8951 diff changeset	7671
f4f4d65faaa0 Implement sparse * diagonal and diagonal * sparse operations, double-prec only. Jason Riedy <jason@acm.org> parents: 8951 diff changeset	7672 SparseMatrix
f4f4d65faaa0 Implement sparse * diagonal and diagonal * sparse operations, double-prec only. Jason Riedy <jason@acm.org> parents: 8951 diff changeset	7673 operator * (const SparseMatrix& a, const DiagMatrix& d)
f4f4d65faaa0 Implement sparse * diagonal and diagonal * sparse operations, double-prec only. Jason Riedy <jason@acm.org> parents: 8951 diff changeset	7674 {
8967 5bbbf482909a fix omissions adjusting JR's patches Jaroslav Hajek <highegg@gmail.com> parents: 8966 diff changeset	7675 return do_mul_sm_dm<SparseMatrix> (a, d);
8964 f4f4d65faaa0 Implement sparse * diagonal and diagonal * sparse operations, double-prec only. Jason Riedy <jason@acm.org> parents: 8951 diff changeset	7676 }
f4f4d65faaa0 Implement sparse * diagonal and diagonal * sparse operations, double-prec only. Jason Riedy <jason@acm.org> parents: 8951 diff changeset	7677
8966 1bba53c0a38d Implement diag + sparse, diag - sparse, sparse + diag, sparse - diag. Jason Riedy <jason@acm.org> parents: 8964 diff changeset	7678 SparseMatrix
1bba53c0a38d Implement diag + sparse, diag - sparse, sparse + diag, sparse - diag. Jason Riedy <jason@acm.org> parents: 8964 diff changeset	7679 operator + (const DiagMatrix& d, const SparseMatrix& a)
1bba53c0a38d Implement diag + sparse, diag - sparse, sparse + diag, sparse - diag. Jason Riedy <jason@acm.org> parents: 8964 diff changeset	7680 {
8967 5bbbf482909a fix omissions adjusting JR's patches Jaroslav Hajek <highegg@gmail.com> parents: 8966 diff changeset	7681 return do_add_dm_sm<SparseMatrix> (d, a);
8966 1bba53c0a38d Implement diag + sparse, diag - sparse, sparse + diag, sparse - diag. Jason Riedy <jason@acm.org> parents: 8964 diff changeset	7682 }
1bba53c0a38d Implement diag + sparse, diag - sparse, sparse + diag, sparse - diag. Jason Riedy <jason@acm.org> parents: 8964 diff changeset	7683
1bba53c0a38d Implement diag + sparse, diag - sparse, sparse + diag, sparse - diag. Jason Riedy <jason@acm.org> parents: 8964 diff changeset	7684 SparseMatrix
1bba53c0a38d Implement diag + sparse, diag - sparse, sparse + diag, sparse - diag. Jason Riedy <jason@acm.org> parents: 8964 diff changeset	7685 operator - (const DiagMatrix& d, const SparseMatrix& a)
1bba53c0a38d Implement diag + sparse, diag - sparse, sparse + diag, sparse - diag. Jason Riedy <jason@acm.org> parents: 8964 diff changeset	7686 {
8967 5bbbf482909a fix omissions adjusting JR's patches Jaroslav Hajek <highegg@gmail.com> parents: 8966 diff changeset	7687 return do_sub_dm_sm<SparseMatrix> (d, a);
8966 1bba53c0a38d Implement diag + sparse, diag - sparse, sparse + diag, sparse - diag. Jason Riedy <jason@acm.org> parents: 8964 diff changeset	7688 }
1bba53c0a38d Implement diag + sparse, diag - sparse, sparse + diag, sparse - diag. Jason Riedy <jason@acm.org> parents: 8964 diff changeset	7689
1bba53c0a38d Implement diag + sparse, diag - sparse, sparse + diag, sparse - diag. Jason Riedy <jason@acm.org> parents: 8964 diff changeset	7690 SparseMatrix
1bba53c0a38d Implement diag + sparse, diag - sparse, sparse + diag, sparse - diag. Jason Riedy <jason@acm.org> parents: 8964 diff changeset	7691 operator + (const SparseMatrix& a, const DiagMatrix& d)
1bba53c0a38d Implement diag + sparse, diag - sparse, sparse + diag, sparse - diag. Jason Riedy <jason@acm.org> parents: 8964 diff changeset	7692 {
8967 5bbbf482909a fix omissions adjusting JR's patches Jaroslav Hajek <highegg@gmail.com> parents: 8966 diff changeset	7693 return do_add_sm_dm<SparseMatrix> (a, d);
8966 1bba53c0a38d Implement diag + sparse, diag - sparse, sparse + diag, sparse - diag. Jason Riedy <jason@acm.org> parents: 8964 diff changeset	7694 }
1bba53c0a38d Implement diag + sparse, diag - sparse, sparse + diag, sparse - diag. Jason Riedy <jason@acm.org> parents: 8964 diff changeset	7695
1bba53c0a38d Implement diag + sparse, diag - sparse, sparse + diag, sparse - diag. Jason Riedy <jason@acm.org> parents: 8964 diff changeset	7696 SparseMatrix
1bba53c0a38d Implement diag + sparse, diag - sparse, sparse + diag, sparse - diag. Jason Riedy <jason@acm.org> parents: 8964 diff changeset	7697 operator - (const SparseMatrix& a, const DiagMatrix& d)
1bba53c0a38d Implement diag + sparse, diag - sparse, sparse + diag, sparse - diag. Jason Riedy <jason@acm.org> parents: 8964 diff changeset	7698 {
8967 5bbbf482909a fix omissions adjusting JR's patches Jaroslav Hajek <highegg@gmail.com> parents: 8966 diff changeset	7699 return do_sub_sm_dm<SparseMatrix> (a, d);
8966 1bba53c0a38d Implement diag + sparse, diag - sparse, sparse + diag, sparse - diag. Jason Riedy <jason@acm.org> parents: 8964 diff changeset	7700 }
1bba53c0a38d Implement diag + sparse, diag - sparse, sparse + diag, sparse - diag. Jason Riedy <jason@acm.org> parents: 8964 diff changeset	7701
8968 91d53dc37f79 Add perm * sparse, perm \ sparse, sparse * perm, and sparse / perm operations. Jason Riedy <jason@acm.org> parents: 8967 diff changeset	7702 // perm * sparse and sparse * perm
91d53dc37f79 Add perm * sparse, perm \ sparse, sparse * perm, and sparse / perm operations. Jason Riedy <jason@acm.org> parents: 8967 diff changeset	7703
91d53dc37f79 Add perm * sparse, perm \ sparse, sparse * perm, and sparse / perm operations. Jason Riedy <jason@acm.org> parents: 8967 diff changeset	7704 SparseMatrix
91d53dc37f79 Add perm * sparse, perm \ sparse, sparse * perm, and sparse / perm operations. Jason Riedy <jason@acm.org> parents: 8967 diff changeset	7705 operator * (const PermMatrix& p, const SparseMatrix& a)
91d53dc37f79 Add perm * sparse, perm \ sparse, sparse * perm, and sparse / perm operations. Jason Riedy <jason@acm.org> parents: 8967 diff changeset	7706 {
91d53dc37f79 Add perm * sparse, perm \ sparse, sparse * perm, and sparse / perm operations. Jason Riedy <jason@acm.org> parents: 8967 diff changeset	7707 return octinternal_do_mul_pm_sm (p, a);
91d53dc37f79 Add perm * sparse, perm \ sparse, sparse * perm, and sparse / perm operations. Jason Riedy <jason@acm.org> parents: 8967 diff changeset	7708 }
91d53dc37f79 Add perm * sparse, perm \ sparse, sparse * perm, and sparse / perm operations. Jason Riedy <jason@acm.org> parents: 8967 diff changeset	7709
91d53dc37f79 Add perm * sparse, perm \ sparse, sparse * perm, and sparse / perm operations. Jason Riedy <jason@acm.org> parents: 8967 diff changeset	7710 SparseMatrix
91d53dc37f79 Add perm * sparse, perm \ sparse, sparse * perm, and sparse / perm operations. Jason Riedy <jason@acm.org> parents: 8967 diff changeset	7711 operator * (const SparseMatrix& a, const PermMatrix& p)
91d53dc37f79 Add perm * sparse, perm \ sparse, sparse * perm, and sparse / perm operations. Jason Riedy <jason@acm.org> parents: 8967 diff changeset	7712 {
91d53dc37f79 Add perm * sparse, perm \ sparse, sparse * perm, and sparse / perm operations. Jason Riedy <jason@acm.org> parents: 8967 diff changeset	7713 return octinternal_do_mul_sm_pm (a, p);
91d53dc37f79 Add perm * sparse, perm \ sparse, sparse * perm, and sparse / perm operations. Jason Riedy <jason@acm.org> parents: 8967 diff changeset	7714 }
91d53dc37f79 Add perm * sparse, perm \ sparse, sparse * perm, and sparse / perm operations. Jason Riedy <jason@acm.org> parents: 8967 diff changeset	7715
5775 ace8d8d26933 [project @ 2006-04-24 19:13:06 by jwe] jwe parents: 5760 diff changeset	7716 // FIXME -- it would be nice to share code among the min/max
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7717 // functions below.
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7718
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7719 #define EMPTY_RETURN_CHECK(T) \
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7720 if (nr == 0 \|\| nc == 0) \
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7721 return T (nr, nc);
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7722
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7723 SparseMatrix
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7724 min (double d, const SparseMatrix& m)
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7725 {
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7726 SparseMatrix result;
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7727
5275 23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe] jwe parents: 5261 diff changeset	7728 octave_idx_type nr = m.rows ();
23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe] jwe parents: 5261 diff changeset	7729 octave_idx_type nc = m.columns ();
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7730
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7731 EMPTY_RETURN_CHECK (SparseMatrix);
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7732
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7733 // Count the number of non-zero elements
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7734 if (d < 0.)
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7735 {
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7736 result = SparseMatrix (nr, nc, d);
5275 23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe] jwe parents: 5261 diff changeset	7737 for (octave_idx_type j = 0; j < nc; j++)
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	7738 for (octave_idx_type i = m.cidx(j); i < m.cidx(j+1); i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	7739 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	7740 double tmp = xmin (d, m.data (i));
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	7741 if (tmp != 0.)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	7742 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	7743 octave_idx_type idx = m.ridx(i) + j * nr;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	7744 result.xdata(idx) = tmp;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	7745 result.xridx(idx) = m.ridx(i);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	7746 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	7747 }
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7748 }
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7749 else
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7750 {
5275 23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe] jwe parents: 5261 diff changeset	7751 octave_idx_type nel = 0;
23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe] jwe parents: 5261 diff changeset	7752 for (octave_idx_type j = 0; j < nc; j++)
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	7753 for (octave_idx_type i = m.cidx(j); i < m.cidx(j+1); i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	7754 if (xmin (d, m.data (i)) != 0.)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	7755 nel++;
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7756
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7757 result = SparseMatrix (nr, nc, nel);
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7758
5275 23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe] jwe parents: 5261 diff changeset	7759 octave_idx_type ii = 0;
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7760 result.xcidx(0) = 0;
5275 23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe] jwe parents: 5261 diff changeset	7761 for (octave_idx_type j = 0; j < nc; j++)
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	7762 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	7763 for (octave_idx_type i = m.cidx(j); i < m.cidx(j+1); i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	7764 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	7765 double tmp = xmin (d, m.data (i));
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	7766
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	7767 if (tmp != 0.)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	7768 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	7769 result.xdata(ii) = tmp;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	7770 result.xridx(ii++) = m.ridx(i);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	7771 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	7772 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	7773 result.xcidx(j+1) = ii;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	7774 }
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7775 }
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7776
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7777 return result;
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7778 }
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7779
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7780 SparseMatrix
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7781 min (const SparseMatrix& m, double d)
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7782 {
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7783 return min (d, m);
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7784 }
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7785
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7786 SparseMatrix
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7787 min (const SparseMatrix& a, const SparseMatrix& b)
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7788 {
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7789 SparseMatrix r;
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7790
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7791 if ((a.rows() == b.rows()) && (a.cols() == b.cols()))
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7792 {
5275 23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe] jwe parents: 5261 diff changeset	7793 octave_idx_type a_nr = a.rows ();
23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe] jwe parents: 5261 diff changeset	7794 octave_idx_type a_nc = a.cols ();
23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe] jwe parents: 5261 diff changeset	7795
23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe] jwe parents: 5261 diff changeset	7796 octave_idx_type b_nr = b.rows ();
23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe] jwe parents: 5261 diff changeset	7797 octave_idx_type b_nc = b.cols ();
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7798
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7799 if (a_nr != b_nr \|\| a_nc != b_nc)
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	7800 gripe_nonconformant ("min", a_nr, a_nc, b_nr, b_nc);
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7801 else
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	7802 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	7803 r = SparseMatrix (a_nr, a_nc, (a.nnz () + b.nnz ()));
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7804
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	7805 octave_idx_type jx = 0;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	7806 r.cidx (0) = 0;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	7807 for (octave_idx_type i = 0 ; i < a_nc ; i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	7808 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	7809 octave_idx_type ja = a.cidx(i);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	7810 octave_idx_type ja_max = a.cidx(i+1);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	7811 bool ja_lt_max= ja < ja_max;
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7812
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	7813 octave_idx_type jb = b.cidx(i);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	7814 octave_idx_type jb_max = b.cidx(i+1);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	7815 bool jb_lt_max = jb < jb_max;
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7816
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	7817 while (ja_lt_max \|\| jb_lt_max )
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	7818 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	7819 octave_quit ();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	7820 if ((! jb_lt_max) \|\|
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7821 (ja_lt_max && (a.ridx(ja) < b.ridx(jb))))
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	7822 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	7823 double tmp = xmin (a.data(ja), 0.);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	7824 if (tmp != 0.)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	7825 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	7826 r.ridx(jx) = a.ridx(ja);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	7827 r.data(jx) = tmp;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	7828 jx++;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	7829 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	7830 ja++;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	7831 ja_lt_max= ja < ja_max;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	7832 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	7833 else if (( !ja_lt_max ) \|\|
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	7834 (jb_lt_max && (b.ridx(jb) < a.ridx(ja)) ) )
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	7835 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	7836 double tmp = xmin (0., b.data(jb));
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	7837 if (tmp != 0.)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	7838 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	7839 r.ridx(jx) = b.ridx(jb);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	7840 r.data(jx) = tmp;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	7841 jx++;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	7842 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	7843 jb++;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	7844 jb_lt_max= jb < jb_max;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	7845 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	7846 else
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	7847 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	7848 double tmp = xmin (a.data(ja), b.data(jb));
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	7849 if (tmp != 0.)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	7850 {
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7851 r.data(jx) = tmp;
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7852 r.ridx(jx) = a.ridx(ja);
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7853 jx++;
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	7854 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	7855 ja++;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	7856 ja_lt_max= ja < ja_max;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	7857 jb++;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	7858 jb_lt_max= jb < jb_max;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	7859 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	7860 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	7861 r.cidx(i+1) = jx;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	7862 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	7863
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	7864 r.maybe_compress ();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	7865 }
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7866 }
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7867 else
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7868 (*current_liboctave_error_handler) ("matrix size mismatch");
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7869
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7870 return r;
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7871 }
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7872
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7873 SparseMatrix
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7874 max (double d, const SparseMatrix& m)
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7875 {
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7876 SparseMatrix result;
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7877
5275 23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe] jwe parents: 5261 diff changeset	7878 octave_idx_type nr = m.rows ();
23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe] jwe parents: 5261 diff changeset	7879 octave_idx_type nc = m.columns ();
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7880
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7881 EMPTY_RETURN_CHECK (SparseMatrix);
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7882
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7883 // Count the number of non-zero elements
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7884 if (d > 0.)
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7885 {
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7886 result = SparseMatrix (nr, nc, d);
5275 23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe] jwe parents: 5261 diff changeset	7887 for (octave_idx_type j = 0; j < nc; j++)
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	7888 for (octave_idx_type i = m.cidx(j); i < m.cidx(j+1); i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	7889 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	7890 double tmp = xmax (d, m.data (i));
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	7891
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	7892 if (tmp != 0.)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	7893 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	7894 octave_idx_type idx = m.ridx(i) + j * nr;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	7895 result.xdata(idx) = tmp;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	7896 result.xridx(idx) = m.ridx(i);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	7897 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	7898 }
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7899 }
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7900 else
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7901 {
5275 23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe] jwe parents: 5261 diff changeset	7902 octave_idx_type nel = 0;
23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe] jwe parents: 5261 diff changeset	7903 for (octave_idx_type j = 0; j < nc; j++)
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	7904 for (octave_idx_type i = m.cidx(j); i < m.cidx(j+1); i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	7905 if (xmax (d, m.data (i)) != 0.)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	7906 nel++;
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7907
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7908 result = SparseMatrix (nr, nc, nel);
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7909
5275 23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe] jwe parents: 5261 diff changeset	7910 octave_idx_type ii = 0;
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7911 result.xcidx(0) = 0;
5275 23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe] jwe parents: 5261 diff changeset	7912 for (octave_idx_type j = 0; j < nc; j++)
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	7913 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	7914 for (octave_idx_type i = m.cidx(j); i < m.cidx(j+1); i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	7915 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	7916 double tmp = xmax (d, m.data (i));
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	7917 if (tmp != 0.)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	7918 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	7919 result.xdata(ii) = tmp;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	7920 result.xridx(ii++) = m.ridx(i);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	7921 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	7922 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	7923 result.xcidx(j+1) = ii;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	7924 }
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7925 }
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7926
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7927 return result;
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7928 }
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7929
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7930 SparseMatrix
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7931 max (const SparseMatrix& m, double d)
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7932 {
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7933 return max (d, m);
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7934 }
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7935
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7936 SparseMatrix
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7937 max (const SparseMatrix& a, const SparseMatrix& b)
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7938 {
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7939 SparseMatrix r;
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7940
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7941 if ((a.rows() == b.rows()) && (a.cols() == b.cols()))
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7942 {
5275 23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe] jwe parents: 5261 diff changeset	7943 octave_idx_type a_nr = a.rows ();
23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe] jwe parents: 5261 diff changeset	7944 octave_idx_type a_nc = a.cols ();
23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe] jwe parents: 5261 diff changeset	7945
23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe] jwe parents: 5261 diff changeset	7946 octave_idx_type b_nr = b.rows ();
23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe] jwe parents: 5261 diff changeset	7947 octave_idx_type b_nc = b.cols ();
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7948
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7949 if (a_nr != b_nr \|\| a_nc != b_nc)
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	7950 gripe_nonconformant ("min", a_nr, a_nc, b_nr, b_nc);
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7951 else
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	7952 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	7953 r = SparseMatrix (a_nr, a_nc, (a.nnz () + b.nnz ()));
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7954
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	7955 octave_idx_type jx = 0;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	7956 r.cidx (0) = 0;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	7957 for (octave_idx_type i = 0 ; i < a_nc ; i++)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	7958 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	7959 octave_idx_type ja = a.cidx(i);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	7960 octave_idx_type ja_max = a.cidx(i+1);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	7961 bool ja_lt_max= ja < ja_max;
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7962
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	7963 octave_idx_type jb = b.cidx(i);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	7964 octave_idx_type jb_max = b.cidx(i+1);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	7965 bool jb_lt_max = jb < jb_max;
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7966
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	7967 while (ja_lt_max \|\| jb_lt_max )
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	7968 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	7969 octave_quit ();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	7970 if ((! jb_lt_max) \|\|
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	7971 (ja_lt_max && (a.ridx(ja) < b.ridx(jb))))
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	7972 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	7973 double tmp = xmax (a.data(ja), 0.);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	7974 if (tmp != 0.)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	7975 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	7976 r.ridx(jx) = a.ridx(ja);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	7977 r.data(jx) = tmp;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	7978 jx++;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	7979 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	7980 ja++;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	7981 ja_lt_max= ja < ja_max;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	7982 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	7983 else if (( !ja_lt_max ) \|\|
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	7984 (jb_lt_max && (b.ridx(jb) < a.ridx(ja)) ) )
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	7985 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	7986 double tmp = xmax (0., b.data(jb));
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	7987 if (tmp != 0.)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	7988 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	7989 r.ridx(jx) = b.ridx(jb);
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	7990 r.data(jx) = tmp;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	7991 jx++;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	7992 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	7993 jb++;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	7994 jb_lt_max= jb < jb_max;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	7995 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	7996 else
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	7997 {
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	7998 double tmp = xmax (a.data(ja), b.data(jb));
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	7999 if (tmp != 0.)
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	8000 {
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	8001 r.data(jx) = tmp;
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	8002 r.ridx(jx) = a.ridx(ja);
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	8003 jx++;
10314 07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	8004 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	8005 ja++;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	8006 ja_lt_max= ja < ja_max;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	8007 jb++;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	8008 jb_lt_max= jb < jb_max;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	8009 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	8010 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	8011 r.cidx(i+1) = jx;
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	8012 }
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	8013
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	8014 r.maybe_compress ();
07ebe522dac2 untabify liboctave C++ sources John W. Eaton <jwe@octave.org> parents: 10158 diff changeset	8015 }
5164 57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	8016 }
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	8017 else
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	8018 (*current_liboctave_error_handler) ("matrix size mismatch");
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	8019
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	8020 return r;
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	8021 }
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	8022
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	8023 SPARSE_SMS_CMP_OPS (SparseMatrix, 0.0, , double, 0.0, )
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	8024 SPARSE_SMS_BOOL_OPS (SparseMatrix, double, 0.0)
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	8025
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	8026 SPARSE_SSM_CMP_OPS (double, 0.0, , SparseMatrix, 0.0, )
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	8027 SPARSE_SSM_BOOL_OPS (double, SparseMatrix, 0.0)
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	8028
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	8029 SPARSE_SMSM_CMP_OPS (SparseMatrix, 0.0, , SparseMatrix, 0.0, )
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe] jwe parents: diff changeset	8030 SPARSE_SMSM_BOOL_OPS (SparseMatrix, SparseMatrix, 0.0)

Mercurial > octave-nkf

annotate liboctave/dSparse.cc @ 11518:141b3fb5cef7