octave-nkf: libinterp/corefcn/qz.cc annotate

annotate libinterp/corefcn/qz.cc @ 20616:fd0efcdb3718

use new string_value method to handle value extraction errors * dirfns.cc, file-io.cc, gammainc.cc, help.cc, load-path.cc, octave-link.cc, qz.cc, regexp.cc, strfns.cc, syscalls.cc, time.cc, variables.cc: Use new string_value method.

author	John W. Eaton <jwe@octave.org>
date	Thu, 08 Oct 2015 19:00:51 -0400
parents	f90c8372b7ba
children

rev	line source
3183 5edc539c2f80 [project @ 1998-09-25 03:37:22 by jwe] jwe parents: diff changeset	1 /*
5edc539c2f80 [project @ 1998-09-25 03:37:22 by jwe] jwe parents: diff changeset	2
19731 4197fc428c7d maint: Update copyright notices for 2015. John W. Eaton <jwe@octave.org> parents: 19437 diff changeset	3 Copyright (C) 1998-2015 A. S. Hodel
3183 5edc539c2f80 [project @ 1998-09-25 03:37:22 by jwe] jwe parents: diff changeset	4
5edc539c2f80 [project @ 1998-09-25 03:37:22 by jwe] jwe parents: diff changeset	5 This file is part of Octave.
5edc539c2f80 [project @ 1998-09-25 03:37:22 by jwe] jwe parents: diff changeset	6
5edc539c2f80 [project @ 1998-09-25 03:37:22 by jwe] jwe parents: diff changeset	7 Octave is free software; you can redistribute it and/or modify it
5edc539c2f80 [project @ 1998-09-25 03:37:22 by jwe] jwe parents: diff changeset	8 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: 5823 diff changeset	9 Free Software Foundation; either version 3 of the License, or (at your
93c65f2a5668 [project @ 2007-10-12 06:40:56 by jwe] jwe parents: 5823 diff changeset	10 option) any later version.
3183 5edc539c2f80 [project @ 1998-09-25 03:37:22 by jwe] jwe parents: diff changeset	11
5edc539c2f80 [project @ 1998-09-25 03:37:22 by jwe] jwe parents: diff changeset	12 Octave is distributed in the hope that it will be useful, but WITHOUT
5edc539c2f80 [project @ 1998-09-25 03:37:22 by jwe] jwe parents: diff changeset	13 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
5edc539c2f80 [project @ 1998-09-25 03:37:22 by jwe] jwe parents: diff changeset	14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
5edc539c2f80 [project @ 1998-09-25 03:37:22 by jwe] jwe parents: diff changeset	15 for more details.
5edc539c2f80 [project @ 1998-09-25 03:37:22 by jwe] jwe parents: diff changeset	16
5edc539c2f80 [project @ 1998-09-25 03:37:22 by jwe] jwe parents: diff changeset	17 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: 5823 diff changeset	18 along with Octave; see the file COPYING. If not, see
93c65f2a5668 [project @ 2007-10-12 06:40:56 by jwe] jwe parents: 5823 diff changeset	19 <http://www.gnu.org/licenses/>.
3183 5edc539c2f80 [project @ 1998-09-25 03:37:22 by jwe] jwe parents: diff changeset	20
5edc539c2f80 [project @ 1998-09-25 03:37:22 by jwe] jwe parents: diff changeset	21 */
5edc539c2f80 [project @ 1998-09-25 03:37:22 by jwe] jwe parents: diff changeset	22
5edc539c2f80 [project @ 1998-09-25 03:37:22 by jwe] jwe parents: diff changeset	23 // Generalized eigenvalue balancing via LAPACK
3911 8389e78e67d4 [project @ 2002-04-28 02:15:38 by jwe] jwe parents: 3887 diff changeset	24
8389e78e67d4 [project @ 2002-04-28 02:15:38 by jwe] jwe parents: 3887 diff changeset	25 // Author: A. S. Hodel <scotte@eng.auburn.edu>
3183 5edc539c2f80 [project @ 1998-09-25 03:37:22 by jwe] jwe parents: diff changeset	26
5edc539c2f80 [project @ 1998-09-25 03:37:22 by jwe] jwe parents: diff changeset	27 #undef DEBUG
5edc539c2f80 [project @ 1998-09-25 03:37:22 by jwe] jwe parents: diff changeset	28 #undef DEBUG_SORT
5edc539c2f80 [project @ 1998-09-25 03:37:22 by jwe] jwe parents: diff changeset	29 #undef DEBUG_EIG
5edc539c2f80 [project @ 1998-09-25 03:37:22 by jwe] jwe parents: diff changeset	30
9786 2c279308f6ab fix includes in some src/DLD-FUNCTIONS files John W. Eaton <jwe@octave.org> parents: 9758 diff changeset	31 #ifdef HAVE_CONFIG_H
2c279308f6ab fix includes in some src/DLD-FUNCTIONS files John W. Eaton <jwe@octave.org> parents: 9758 diff changeset	32 #include <config.h>
2c279308f6ab fix includes in some src/DLD-FUNCTIONS files John W. Eaton <jwe@octave.org> parents: 9758 diff changeset	33 #endif
3183 5edc539c2f80 [project @ 1998-09-25 03:37:22 by jwe] jwe parents: diff changeset	34
5edc539c2f80 [project @ 1998-09-25 03:37:22 by jwe] jwe parents: diff changeset	35 #include <cfloat>
4051 b79da8779a0e [project @ 2002-08-17 19:38:32 by jwe] jwe parents: 3911 diff changeset	36
3523 b80bbb43a1a9 [project @ 2000-02-02 10:25:52 by jwe] jwe parents: 3500 diff changeset	37 #include <iostream>
4051 b79da8779a0e [project @ 2002-08-17 19:38:32 by jwe] jwe parents: 3911 diff changeset	38 #include <iomanip>
3183 5edc539c2f80 [project @ 1998-09-25 03:37:22 by jwe] jwe parents: diff changeset	39
5edc539c2f80 [project @ 1998-09-25 03:37:22 by jwe] jwe parents: diff changeset	40 #include "CmplxQRP.h"
10307 4e4270ab70d6 support complex case in qz Jyh-miin Lin <jyhmiinlin@gmail.com> parents: 10155 diff changeset	41 #include "CmplxQR.h"
3183 5edc539c2f80 [project @ 1998-09-25 03:37:22 by jwe] jwe parents: diff changeset	42 #include "dbleQR.h"
4153 6b96ce9f5743 [project @ 2002-11-06 20:38:49 by jwe] jwe parents: 4051 diff changeset	43 #include "f77-fcn.h"
7231 2eb392d058bb [project @ 2007-11-30 18:53:29 by jwe] jwe parents: 7017 diff changeset	44 #include "lo-math.h"
4153 6b96ce9f5743 [project @ 2002-11-06 20:38:49 by jwe] jwe parents: 4051 diff changeset	45 #include "quit.h"
6b96ce9f5743 [project @ 2002-11-06 20:38:49 by jwe] jwe parents: 4051 diff changeset	46
15039 e753177cde93 maint: Move non-dynamically linked functions from DLD-FUNCTIONS/ to corefcn/ directory Rik <rik@octave.org> parents: 14876 diff changeset	47 #include "defun.h"
3183 5edc539c2f80 [project @ 1998-09-25 03:37:22 by jwe] jwe parents: diff changeset	48 #include "error.h"
5edc539c2f80 [project @ 1998-09-25 03:37:22 by jwe] jwe parents: diff changeset	49 #include "gripes.h"
5edc539c2f80 [project @ 1998-09-25 03:37:22 by jwe] jwe parents: diff changeset	50 #include "oct-obj.h"
5edc539c2f80 [project @ 1998-09-25 03:37:22 by jwe] jwe parents: diff changeset	51 #include "oct-map.h"
5edc539c2f80 [project @ 1998-09-25 03:37:22 by jwe] jwe parents: diff changeset	52 #include "ov.h"
5edc539c2f80 [project @ 1998-09-25 03:37:22 by jwe] jwe parents: diff changeset	53 #include "pager.h"
3185 9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	54 #if defined (DEBUG) \|\| defined (DEBUG_SORT)
3183 5edc539c2f80 [project @ 1998-09-25 03:37:22 by jwe] jwe parents: diff changeset	55 #include "pr-output.h"
5edc539c2f80 [project @ 1998-09-25 03:37:22 by jwe] jwe parents: diff changeset	56 #endif
5edc539c2f80 [project @ 1998-09-25 03:37:22 by jwe] jwe parents: diff changeset	57 #include "symtab.h"
5edc539c2f80 [project @ 1998-09-25 03:37:22 by jwe] jwe parents: diff changeset	58 #include "utils.h"
5edc539c2f80 [project @ 1998-09-25 03:37:22 by jwe] jwe parents: diff changeset	59 #include "variables.h"
5edc539c2f80 [project @ 1998-09-25 03:37:22 by jwe] jwe parents: diff changeset	60
17787 175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	61 typedef octave_idx_type (*sort_function) (const octave_idx_type& LSIZE,
175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	62 const double& ALPHA,
175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	63 const double& BETA, const double& S,
175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	64 const double& P);
3183 5edc539c2f80 [project @ 1998-09-25 03:37:22 by jwe] jwe parents: diff changeset	65
5edc539c2f80 [project @ 1998-09-25 03:37:22 by jwe] jwe parents: diff changeset	66 extern "C"
5edc539c2f80 [project @ 1998-09-25 03:37:22 by jwe] jwe parents: diff changeset	67 {
4552 6f3382e08a52 [project @ 2003-10-27 20:38:02 by jwe] jwe parents: 4153 diff changeset	68 F77_RET_T
6f3382e08a52 [project @ 2003-10-27 20:38:02 by jwe] jwe parents: 4153 diff changeset	69 F77_FUNC (dggbal, DGGBAL) (F77_CONST_CHAR_ARG_DECL,
10311 a217e1d74353 untabify qz.cc John W. Eaton <jwe@octave.org> parents: 10307 diff changeset	70 const octave_idx_type& N, double* A,
a217e1d74353 untabify qz.cc John W. Eaton <jwe@octave.org> parents: 10307 diff changeset	71 const octave_idx_type& LDA, double* B,
a217e1d74353 untabify qz.cc John W. Eaton <jwe@octave.org> parents: 10307 diff changeset	72 const octave_idx_type& LDB, octave_idx_type& ILO,
a217e1d74353 untabify qz.cc John W. Eaton <jwe@octave.org> parents: 10307 diff changeset	73 octave_idx_type& IHI, double* LSCALE,
a217e1d74353 untabify qz.cc John W. Eaton <jwe@octave.org> parents: 10307 diff changeset	74 double* RSCALE, double* WORK,
a217e1d74353 untabify qz.cc John W. Eaton <jwe@octave.org> parents: 10307 diff changeset	75 octave_idx_type& INFO
10154 40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	76 F77_CHAR_ARG_LEN_DECL);
3183 5edc539c2f80 [project @ 1998-09-25 03:37:22 by jwe] jwe parents: diff changeset	77
19895 19755f4fc851 maint: Cleanup C++ code to follow Octave coding conventions. Rik <rik@octave.org> parents: 19731 diff changeset	78 F77_RET_T
10307 4e4270ab70d6 support complex case in qz Jyh-miin Lin <jyhmiinlin@gmail.com> parents: 10155 diff changeset	79 F77_FUNC (zggbal, ZGGBAL) (F77_CONST_CHAR_ARG_DECL,
10311 a217e1d74353 untabify qz.cc John W. Eaton <jwe@octave.org> parents: 10307 diff changeset	80 const octave_idx_type& N, Complex* A,
a217e1d74353 untabify qz.cc John W. Eaton <jwe@octave.org> parents: 10307 diff changeset	81 const octave_idx_type& LDA, Complex* B,
a217e1d74353 untabify qz.cc John W. Eaton <jwe@octave.org> parents: 10307 diff changeset	82 const octave_idx_type& LDB, octave_idx_type& ILO,
a217e1d74353 untabify qz.cc John W. Eaton <jwe@octave.org> parents: 10307 diff changeset	83 octave_idx_type& IHI, double* LSCALE,
a217e1d74353 untabify qz.cc John W. Eaton <jwe@octave.org> parents: 10307 diff changeset	84 double* RSCALE, double* WORK,
a217e1d74353 untabify qz.cc John W. Eaton <jwe@octave.org> parents: 10307 diff changeset	85 octave_idx_type& INFO
11586 12df7854fa7c strip trailing whitespace from source files John W. Eaton <jwe@octave.org> parents: 11570 diff changeset	86 F77_CHAR_ARG_LEN_DECL);
10307 4e4270ab70d6 support complex case in qz Jyh-miin Lin <jyhmiinlin@gmail.com> parents: 10155 diff changeset	87
4552 6f3382e08a52 [project @ 2003-10-27 20:38:02 by jwe] jwe parents: 4153 diff changeset	88 F77_RET_T
6f3382e08a52 [project @ 2003-10-27 20:38:02 by jwe] jwe parents: 4153 diff changeset	89 F77_FUNC (dggbak, DGGBAK) (F77_CONST_CHAR_ARG_DECL,
10154 40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	90 F77_CONST_CHAR_ARG_DECL,
10311 a217e1d74353 untabify qz.cc John W. Eaton <jwe@octave.org> parents: 10307 diff changeset	91 const octave_idx_type& N,
a217e1d74353 untabify qz.cc John W. Eaton <jwe@octave.org> parents: 10307 diff changeset	92 const octave_idx_type& ILO,
a217e1d74353 untabify qz.cc John W. Eaton <jwe@octave.org> parents: 10307 diff changeset	93 const octave_idx_type& IHI,
a217e1d74353 untabify qz.cc John W. Eaton <jwe@octave.org> parents: 10307 diff changeset	94 const double* LSCALE, const double* RSCALE,
a217e1d74353 untabify qz.cc John W. Eaton <jwe@octave.org> parents: 10307 diff changeset	95 octave_idx_type& M, double* V,
10154 40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	96 const octave_idx_type& LDV, octave_idx_type& INFO
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	97 F77_CHAR_ARG_LEN_DECL
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	98 F77_CHAR_ARG_LEN_DECL);
3183 5edc539c2f80 [project @ 1998-09-25 03:37:22 by jwe] jwe parents: diff changeset	99
19895 19755f4fc851 maint: Cleanup C++ code to follow Octave coding conventions. Rik <rik@octave.org> parents: 19731 diff changeset	100 F77_RET_T
10307 4e4270ab70d6 support complex case in qz Jyh-miin Lin <jyhmiinlin@gmail.com> parents: 10155 diff changeset	101 F77_FUNC (zggbak, ZGGBAK) (F77_CONST_CHAR_ARG_DECL,
4e4270ab70d6 support complex case in qz Jyh-miin Lin <jyhmiinlin@gmail.com> parents: 10155 diff changeset	102 F77_CONST_CHAR_ARG_DECL,
10311 a217e1d74353 untabify qz.cc John W. Eaton <jwe@octave.org> parents: 10307 diff changeset	103 const octave_idx_type& N,
a217e1d74353 untabify qz.cc John W. Eaton <jwe@octave.org> parents: 10307 diff changeset	104 const octave_idx_type& ILO,
a217e1d74353 untabify qz.cc John W. Eaton <jwe@octave.org> parents: 10307 diff changeset	105 const octave_idx_type& IHI,
a217e1d74353 untabify qz.cc John W. Eaton <jwe@octave.org> parents: 10307 diff changeset	106 const double* LSCALE, const double* RSCALE,
a217e1d74353 untabify qz.cc John W. Eaton <jwe@octave.org> parents: 10307 diff changeset	107 octave_idx_type& M, Complex* V,
10307 4e4270ab70d6 support complex case in qz Jyh-miin Lin <jyhmiinlin@gmail.com> parents: 10155 diff changeset	108 const octave_idx_type& LDV, octave_idx_type& INFO
4e4270ab70d6 support complex case in qz Jyh-miin Lin <jyhmiinlin@gmail.com> parents: 10155 diff changeset	109 F77_CHAR_ARG_LEN_DECL
4e4270ab70d6 support complex case in qz Jyh-miin Lin <jyhmiinlin@gmail.com> parents: 10155 diff changeset	110 F77_CHAR_ARG_LEN_DECL);
4e4270ab70d6 support complex case in qz Jyh-miin Lin <jyhmiinlin@gmail.com> parents: 10155 diff changeset	111
4552 6f3382e08a52 [project @ 2003-10-27 20:38:02 by jwe] jwe parents: 4153 diff changeset	112 F77_RET_T
6f3382e08a52 [project @ 2003-10-27 20:38:02 by jwe] jwe parents: 4153 diff changeset	113 F77_FUNC (dgghrd, DGGHRD) (F77_CONST_CHAR_ARG_DECL,
10154 40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	114 F77_CONST_CHAR_ARG_DECL,
10311 a217e1d74353 untabify qz.cc John W. Eaton <jwe@octave.org> parents: 10307 diff changeset	115 const octave_idx_type& N,
a217e1d74353 untabify qz.cc John W. Eaton <jwe@octave.org> parents: 10307 diff changeset	116 const octave_idx_type& ILO,
10154 40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	117 const octave_idx_type& IHI, double* A,
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	118 const octave_idx_type& LDA, double* B,
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	119 const octave_idx_type& LDB, double* Q,
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	120 const octave_idx_type& LDQ, double* Z,
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	121 const octave_idx_type& LDZ, octave_idx_type& INFO
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	122 F77_CHAR_ARG_LEN_DECL
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	123 F77_CHAR_ARG_LEN_DECL);
3183 5edc539c2f80 [project @ 1998-09-25 03:37:22 by jwe] jwe parents: diff changeset	124
19895 19755f4fc851 maint: Cleanup C++ code to follow Octave coding conventions. Rik <rik@octave.org> parents: 19731 diff changeset	125 F77_RET_T
10307 4e4270ab70d6 support complex case in qz Jyh-miin Lin <jyhmiinlin@gmail.com> parents: 10155 diff changeset	126 F77_FUNC (zgghrd, ZGGHRD) (F77_CONST_CHAR_ARG_DECL,
4e4270ab70d6 support complex case in qz Jyh-miin Lin <jyhmiinlin@gmail.com> parents: 10155 diff changeset	127 F77_CONST_CHAR_ARG_DECL,
10311 a217e1d74353 untabify qz.cc John W. Eaton <jwe@octave.org> parents: 10307 diff changeset	128 const octave_idx_type& N,
a217e1d74353 untabify qz.cc John W. Eaton <jwe@octave.org> parents: 10307 diff changeset	129 const octave_idx_type& ILO,
10307 4e4270ab70d6 support complex case in qz Jyh-miin Lin <jyhmiinlin@gmail.com> parents: 10155 diff changeset	130 const octave_idx_type& IHI, Complex* A,
4e4270ab70d6 support complex case in qz Jyh-miin Lin <jyhmiinlin@gmail.com> parents: 10155 diff changeset	131 const octave_idx_type& LDA, Complex* B,
4e4270ab70d6 support complex case in qz Jyh-miin Lin <jyhmiinlin@gmail.com> parents: 10155 diff changeset	132 const octave_idx_type& LDB, Complex* Q,
4e4270ab70d6 support complex case in qz Jyh-miin Lin <jyhmiinlin@gmail.com> parents: 10155 diff changeset	133 const octave_idx_type& LDQ, Complex* Z,
4e4270ab70d6 support complex case in qz Jyh-miin Lin <jyhmiinlin@gmail.com> parents: 10155 diff changeset	134 const octave_idx_type& LDZ, octave_idx_type& INFO
4e4270ab70d6 support complex case in qz Jyh-miin Lin <jyhmiinlin@gmail.com> parents: 10155 diff changeset	135 F77_CHAR_ARG_LEN_DECL
4e4270ab70d6 support complex case in qz Jyh-miin Lin <jyhmiinlin@gmail.com> parents: 10155 diff changeset	136 F77_CHAR_ARG_LEN_DECL);
4e4270ab70d6 support complex case in qz Jyh-miin Lin <jyhmiinlin@gmail.com> parents: 10155 diff changeset	137
4552 6f3382e08a52 [project @ 2003-10-27 20:38:02 by jwe] jwe parents: 4153 diff changeset	138 F77_RET_T
6f3382e08a52 [project @ 2003-10-27 20:38:02 by jwe] jwe parents: 4153 diff changeset	139 F77_FUNC (dhgeqz, DHGEQZ) (F77_CONST_CHAR_ARG_DECL,
10154 40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	140 F77_CONST_CHAR_ARG_DECL,
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	141 F77_CONST_CHAR_ARG_DECL,
10311 a217e1d74353 untabify qz.cc John W. Eaton <jwe@octave.org> parents: 10307 diff changeset	142 const octave_idx_type& N,
a217e1d74353 untabify qz.cc John W. Eaton <jwe@octave.org> parents: 10307 diff changeset	143 const octave_idx_type& ILO,
a217e1d74353 untabify qz.cc John W. Eaton <jwe@octave.org> parents: 10307 diff changeset	144 const octave_idx_type& IHI,
10154 40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	145 double* A, const octave_idx_type& LDA, double* B,
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	146 const octave_idx_type& LDB, double* ALPHAR,
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	147 double* ALPHAI, double* BETA, double* Q,
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	148 const octave_idx_type& LDQ, double* Z,
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	149 const octave_idx_type& LDZ, double* WORK,
10311 a217e1d74353 untabify qz.cc John W. Eaton <jwe@octave.org> parents: 10307 diff changeset	150 const octave_idx_type& LWORK,
a217e1d74353 untabify qz.cc John W. Eaton <jwe@octave.org> parents: 10307 diff changeset	151 octave_idx_type& INFO
10154 40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	152 F77_CHAR_ARG_LEN_DECL
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	153 F77_CHAR_ARG_LEN_DECL
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	154 F77_CHAR_ARG_LEN_DECL);
3183 5edc539c2f80 [project @ 1998-09-25 03:37:22 by jwe] jwe parents: diff changeset	155
19895 19755f4fc851 maint: Cleanup C++ code to follow Octave coding conventions. Rik <rik@octave.org> parents: 19731 diff changeset	156 F77_RET_T
10307 4e4270ab70d6 support complex case in qz Jyh-miin Lin <jyhmiinlin@gmail.com> parents: 10155 diff changeset	157 F77_FUNC (zhgeqz, ZHGEQZ) (F77_CONST_CHAR_ARG_DECL,
4e4270ab70d6 support complex case in qz Jyh-miin Lin <jyhmiinlin@gmail.com> parents: 10155 diff changeset	158 F77_CONST_CHAR_ARG_DECL,
4e4270ab70d6 support complex case in qz Jyh-miin Lin <jyhmiinlin@gmail.com> parents: 10155 diff changeset	159 F77_CONST_CHAR_ARG_DECL,
10311 a217e1d74353 untabify qz.cc John W. Eaton <jwe@octave.org> parents: 10307 diff changeset	160 const octave_idx_type& N,
a217e1d74353 untabify qz.cc John W. Eaton <jwe@octave.org> parents: 10307 diff changeset	161 const octave_idx_type& ILO,
a217e1d74353 untabify qz.cc John W. Eaton <jwe@octave.org> parents: 10307 diff changeset	162 const octave_idx_type& IHI,
a217e1d74353 untabify qz.cc John W. Eaton <jwe@octave.org> parents: 10307 diff changeset	163 Complex* A, const octave_idx_type& LDA,
a217e1d74353 untabify qz.cc John W. Eaton <jwe@octave.org> parents: 10307 diff changeset	164 Complex* B, const octave_idx_type& LDB,
a217e1d74353 untabify qz.cc John W. Eaton <jwe@octave.org> parents: 10307 diff changeset	165 Complex* ALPHA, Complex* BETA, Complex* CQ,
11586 12df7854fa7c strip trailing whitespace from source files John W. Eaton <jwe@octave.org> parents: 11570 diff changeset	166 const octave_idx_type& LDQ,
12df7854fa7c strip trailing whitespace from source files John W. Eaton <jwe@octave.org> parents: 11570 diff changeset	167 Complex* CZ, const octave_idx_type& LDZ,
10311 a217e1d74353 untabify qz.cc John W. Eaton <jwe@octave.org> parents: 10307 diff changeset	168 Complex* WORK, const octave_idx_type& LWORK,
a217e1d74353 untabify qz.cc John W. Eaton <jwe@octave.org> parents: 10307 diff changeset	169 double* RWORK, octave_idx_type& INFO
10307 4e4270ab70d6 support complex case in qz Jyh-miin Lin <jyhmiinlin@gmail.com> parents: 10155 diff changeset	170 F77_CHAR_ARG_LEN_DECL
4e4270ab70d6 support complex case in qz Jyh-miin Lin <jyhmiinlin@gmail.com> parents: 10155 diff changeset	171 F77_CHAR_ARG_LEN_DECL
4e4270ab70d6 support complex case in qz Jyh-miin Lin <jyhmiinlin@gmail.com> parents: 10155 diff changeset	172 F77_CHAR_ARG_LEN_DECL);
4e4270ab70d6 support complex case in qz Jyh-miin Lin <jyhmiinlin@gmail.com> parents: 10155 diff changeset	173
4552 6f3382e08a52 [project @ 2003-10-27 20:38:02 by jwe] jwe parents: 4153 diff changeset	174 F77_RET_T
10311 a217e1d74353 untabify qz.cc John W. Eaton <jwe@octave.org> parents: 10307 diff changeset	175 F77_FUNC (dlag2, DLAG2) (const double* A, const octave_idx_type& LDA,
a217e1d74353 untabify qz.cc John W. Eaton <jwe@octave.org> parents: 10307 diff changeset	176 const double* B, const octave_idx_type& LDB,
a217e1d74353 untabify qz.cc John W. Eaton <jwe@octave.org> parents: 10307 diff changeset	177 const double& SAFMIN, double& SCALE1,
a217e1d74353 untabify qz.cc John W. Eaton <jwe@octave.org> parents: 10307 diff changeset	178 double& SCALE2, double& WR1, double& WR2,
a217e1d74353 untabify qz.cc John W. Eaton <jwe@octave.org> parents: 10307 diff changeset	179 double& WI);
3183 5edc539c2f80 [project @ 1998-09-25 03:37:22 by jwe] jwe parents: diff changeset	180
5edc539c2f80 [project @ 1998-09-25 03:37:22 by jwe] jwe parents: diff changeset	181 // Van Dooren's code (netlib.org: toms/590) for reordering
5edc539c2f80 [project @ 1998-09-25 03:37:22 by jwe] jwe parents: diff changeset	182 // GEP. Only processes Z, not Q.
4552 6f3382e08a52 [project @ 2003-10-27 20:38:02 by jwe] jwe parents: 4153 diff changeset	183 F77_RET_T
10311 a217e1d74353 untabify qz.cc John W. Eaton <jwe@octave.org> parents: 10307 diff changeset	184 F77_FUNC (dsubsp, DSUBSP) (const octave_idx_type& NMAX,
a217e1d74353 untabify qz.cc John W. Eaton <jwe@octave.org> parents: 10307 diff changeset	185 const octave_idx_type& N, double* A,
10154 40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	186 double* B, double* Z, sort_function,
10311 a217e1d74353 untabify qz.cc John W. Eaton <jwe@octave.org> parents: 10307 diff changeset	187 const double& EPS, octave_idx_type& NDIM,
a217e1d74353 untabify qz.cc John W. Eaton <jwe@octave.org> parents: 10307 diff changeset	188 octave_idx_type& FAIL, octave_idx_type* IND);
3183 5edc539c2f80 [project @ 1998-09-25 03:37:22 by jwe] jwe parents: diff changeset	189
10311 a217e1d74353 untabify qz.cc John W. Eaton <jwe@octave.org> parents: 10307 diff changeset	190 // Documentation for DTGEVC incorrectly states that VR, VL are
3183 5edc539c2f80 [project @ 1998-09-25 03:37:22 by jwe] jwe parents: diff changeset	191 // complex*16; they are declared in DTGEVC as double precision
10311 a217e1d74353 untabify qz.cc John W. Eaton <jwe@octave.org> parents: 10307 diff changeset	192 // (probably a cut and paste problem fro ZTGEVC).
4552 6f3382e08a52 [project @ 2003-10-27 20:38:02 by jwe] jwe parents: 4153 diff changeset	193 F77_RET_T
6f3382e08a52 [project @ 2003-10-27 20:38:02 by jwe] jwe parents: 4153 diff changeset	194 F77_FUNC (dtgevc, DTGEVC) (F77_CONST_CHAR_ARG_DECL,
10154 40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	195 F77_CONST_CHAR_ARG_DECL,
10311 a217e1d74353 untabify qz.cc John W. Eaton <jwe@octave.org> parents: 10307 diff changeset	196 octave_idx_type* SELECT,
a217e1d74353 untabify qz.cc John W. Eaton <jwe@octave.org> parents: 10307 diff changeset	197 const octave_idx_type& N, double* A,
10154 40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	198 const octave_idx_type& LDA, double* B,
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	199 const octave_idx_type& LDB, double* VL,
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	200 const octave_idx_type& LDVL, double* VR,
10311 a217e1d74353 untabify qz.cc John W. Eaton <jwe@octave.org> parents: 10307 diff changeset	201 const octave_idx_type& LDVR,
a217e1d74353 untabify qz.cc John W. Eaton <jwe@octave.org> parents: 10307 diff changeset	202 const octave_idx_type& MM, octave_idx_type& M,
a217e1d74353 untabify qz.cc John W. Eaton <jwe@octave.org> parents: 10307 diff changeset	203 double* WORK, octave_idx_type& INFO
10154 40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	204 F77_CHAR_ARG_LEN_DECL
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	205 F77_CHAR_ARG_LEN_DECL);
3183 5edc539c2f80 [project @ 1998-09-25 03:37:22 by jwe] jwe parents: diff changeset	206
19895 19755f4fc851 maint: Cleanup C++ code to follow Octave coding conventions. Rik <rik@octave.org> parents: 19731 diff changeset	207 F77_RET_T
10307 4e4270ab70d6 support complex case in qz Jyh-miin Lin <jyhmiinlin@gmail.com> parents: 10155 diff changeset	208 F77_FUNC (ztgevc, ZTGEVC) (F77_CONST_CHAR_ARG_DECL,
4e4270ab70d6 support complex case in qz Jyh-miin Lin <jyhmiinlin@gmail.com> parents: 10155 diff changeset	209 F77_CONST_CHAR_ARG_DECL,
10311 a217e1d74353 untabify qz.cc John W. Eaton <jwe@octave.org> parents: 10307 diff changeset	210 octave_idx_type* SELECT,
a217e1d74353 untabify qz.cc John W. Eaton <jwe@octave.org> parents: 10307 diff changeset	211 const octave_idx_type& N, const Complex* A,
10307 4e4270ab70d6 support complex case in qz Jyh-miin Lin <jyhmiinlin@gmail.com> parents: 10155 diff changeset	212 const octave_idx_type& LDA,const Complex* B,
4e4270ab70d6 support complex case in qz Jyh-miin Lin <jyhmiinlin@gmail.com> parents: 10155 diff changeset	213 const octave_idx_type& LDB, Complex* xVL,
4e4270ab70d6 support complex case in qz Jyh-miin Lin <jyhmiinlin@gmail.com> parents: 10155 diff changeset	214 const octave_idx_type& LDVL, Complex* xVR,
10311 a217e1d74353 untabify qz.cc John W. Eaton <jwe@octave.org> parents: 10307 diff changeset	215 const octave_idx_type& LDVR,
a217e1d74353 untabify qz.cc John W. Eaton <jwe@octave.org> parents: 10307 diff changeset	216 const octave_idx_type& MM, octave_idx_type& M,
a217e1d74353 untabify qz.cc John W. Eaton <jwe@octave.org> parents: 10307 diff changeset	217 Complex* CWORK, double* RWORK,
a217e1d74353 untabify qz.cc John W. Eaton <jwe@octave.org> parents: 10307 diff changeset	218 octave_idx_type& INFO
10307 4e4270ab70d6 support complex case in qz Jyh-miin Lin <jyhmiinlin@gmail.com> parents: 10155 diff changeset	219 F77_CHAR_ARG_LEN_DECL
4e4270ab70d6 support complex case in qz Jyh-miin Lin <jyhmiinlin@gmail.com> parents: 10155 diff changeset	220 F77_CHAR_ARG_LEN_DECL);
4e4270ab70d6 support complex case in qz Jyh-miin Lin <jyhmiinlin@gmail.com> parents: 10155 diff changeset	221
4552 6f3382e08a52 [project @ 2003-10-27 20:38:02 by jwe] jwe parents: 4153 diff changeset	222 F77_RET_T
6f3382e08a52 [project @ 2003-10-27 20:38:02 by jwe] jwe parents: 4153 diff changeset	223 F77_FUNC (xdlamch, XDLAMCH) (F77_CONST_CHAR_ARG_DECL,
10154 40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	224 double& retval
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	225 F77_CHAR_ARG_LEN_DECL);
3185 9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	226
4552 6f3382e08a52 [project @ 2003-10-27 20:38:02 by jwe] jwe parents: 4153 diff changeset	227 F77_RET_T
6f3382e08a52 [project @ 2003-10-27 20:38:02 by jwe] jwe parents: 4153 diff changeset	228 F77_FUNC (xdlange, XDLANGE) (F77_CONST_CHAR_ARG_DECL,
10311 a217e1d74353 untabify qz.cc John W. Eaton <jwe@octave.org> parents: 10307 diff changeset	229 const octave_idx_type&,
a217e1d74353 untabify qz.cc John W. Eaton <jwe@octave.org> parents: 10307 diff changeset	230 const octave_idx_type&, const double*,
10154 40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	231 const octave_idx_type&, double*, double&
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	232 F77_CHAR_ARG_LEN_DECL);
3183 5edc539c2f80 [project @ 1998-09-25 03:37:22 by jwe] jwe parents: diff changeset	233 }
5edc539c2f80 [project @ 1998-09-25 03:37:22 by jwe] jwe parents: diff changeset	234
5edc539c2f80 [project @ 1998-09-25 03:37:22 by jwe] jwe parents: diff changeset	235 // fcrhp, fin, fout, folhp:
5edc539c2f80 [project @ 1998-09-25 03:37:22 by jwe] jwe parents: diff changeset	236 // routines for ordering of generalized eigenvalues
5edc539c2f80 [project @ 1998-09-25 03:37:22 by jwe] jwe parents: diff changeset	237 // return 1 if test is passed, 0 otherwise
5edc539c2f80 [project @ 1998-09-25 03:37:22 by jwe] jwe parents: diff changeset	238 // fin: \|lambda\| < 1
5edc539c2f80 [project @ 1998-09-25 03:37:22 by jwe] jwe parents: diff changeset	239 // fout: \|lambda\| >= 1
5edc539c2f80 [project @ 1998-09-25 03:37:22 by jwe] jwe parents: diff changeset	240 // fcrhp: real(lambda) >= 0
5edc539c2f80 [project @ 1998-09-25 03:37:22 by jwe] jwe parents: diff changeset	241 // folhp: real(lambda) < 0
5edc539c2f80 [project @ 1998-09-25 03:37:22 by jwe] jwe parents: diff changeset	242
5275 23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe] jwe parents: 5016 diff changeset	243 static octave_idx_type
23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe] jwe parents: 5016 diff changeset	244 fcrhp (const octave_idx_type& lsize, const double& alpha,
3185 9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	245 const double& beta, const double& s, const double&)
3183 5edc539c2f80 [project @ 1998-09-25 03:37:22 by jwe] jwe parents: diff changeset	246 {
3185 9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	247 if (lsize == 1)
10311 a217e1d74353 untabify qz.cc John W. Eaton <jwe@octave.org> parents: 10307 diff changeset	248 return (alpha * beta >= 0 ? 1 : -1);
3185 9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	249 else
3183 5edc539c2f80 [project @ 1998-09-25 03:37:22 by jwe] jwe parents: diff changeset	250 return (s >= 0 ? 1 : -1);
5edc539c2f80 [project @ 1998-09-25 03:37:22 by jwe] jwe parents: diff changeset	251 }
3185 9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	252
5275 23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe] jwe parents: 5016 diff changeset	253 static octave_idx_type
23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe] jwe parents: 5016 diff changeset	254 fin (const octave_idx_type& lsize, const double& alpha,
3185 9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	255 const double& beta, const double&, const double& p)
3183 5edc539c2f80 [project @ 1998-09-25 03:37:22 by jwe] jwe parents: diff changeset	256 {
5275 23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe] jwe parents: 5016 diff changeset	257 octave_idx_type retval;
3183 5edc539c2f80 [project @ 1998-09-25 03:37:22 by jwe] jwe parents: diff changeset	258
3185 9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	259 if (lsize == 1)
9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	260 retval = (fabs (alpha) < fabs (beta) ? 1 : -1);
9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	261 else
9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	262 retval = (fabs (p) < 1 ? 1 : -1);
9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	263
9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	264 #ifdef DEBUG
3538 0ff7323dab8b [project @ 2000-02-02 12:36:25 by jwe] jwe parents: 3531 diff changeset	265 std::cout << "qz: fin: retval=" << retval << std::endl;
3185 9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	266 #endif
9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	267
3183 5edc539c2f80 [project @ 1998-09-25 03:37:22 by jwe] jwe parents: diff changeset	268 return retval;
5edc539c2f80 [project @ 1998-09-25 03:37:22 by jwe] jwe parents: diff changeset	269 }
3185 9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	270
5275 23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe] jwe parents: 5016 diff changeset	271 static octave_idx_type
23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe] jwe parents: 5016 diff changeset	272 folhp (const octave_idx_type& lsize, const double& alpha,
3185 9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	273 const double& beta, const double& s, const double&)
3183 5edc539c2f80 [project @ 1998-09-25 03:37:22 by jwe] jwe parents: diff changeset	274 {
3185 9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	275 if (lsize == 1)
10311 a217e1d74353 untabify qz.cc John W. Eaton <jwe@octave.org> parents: 10307 diff changeset	276 return (alpha * beta < 0 ? 1 : -1);
3185 9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	277 else
3183 5edc539c2f80 [project @ 1998-09-25 03:37:22 by jwe] jwe parents: diff changeset	278 return (s < 0 ? 1 : -1);
5edc539c2f80 [project @ 1998-09-25 03:37:22 by jwe] jwe parents: diff changeset	279 }
3185 9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	280
5275 23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe] jwe parents: 5016 diff changeset	281 static octave_idx_type
23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe] jwe parents: 5016 diff changeset	282 fout (const octave_idx_type& lsize, const double& alpha,
3185 9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	283 const double& beta, const double&, const double& p)
3183 5edc539c2f80 [project @ 1998-09-25 03:37:22 by jwe] jwe parents: diff changeset	284 {
3185 9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	285 if (lsize == 1)
9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	286 return (fabs (alpha) >= fabs (beta) ? 1 : -1);
9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	287 else
9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	288 return (fabs (p) >= 1 ? 1 : -1);
3183 5edc539c2f80 [project @ 1998-09-25 03:37:22 by jwe] jwe parents: diff changeset	289 }
5edc539c2f80 [project @ 1998-09-25 03:37:22 by jwe] jwe parents: diff changeset	290
13074 0b789a03bde1 codesprint: Add 3 tests for qz.cc Jordi Gutiérrez Hermoso <jordigh@gmail.com> parents: 12642 diff changeset	291
0b789a03bde1 codesprint: Add 3 tests for qz.cc Jordi Gutiérrez Hermoso <jordigh@gmail.com> parents: 12642 diff changeset	292 //FIXME: Matlab does not produce lambda as the first output argument.
0b789a03bde1 codesprint: Add 3 tests for qz.cc Jordi Gutiérrez Hermoso <jordigh@gmail.com> parents: 12642 diff changeset	293 // Compatibility problem?
15039 e753177cde93 maint: Move non-dynamically linked functions from DLD-FUNCTIONS/ to corefcn/ directory Rik <rik@octave.org> parents: 14876 diff changeset	294 DEFUN (qz, args, nargout,
17787 175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	295 "-- texinfo --\n\
15039 e753177cde93 maint: Move non-dynamically linked functions from DLD-FUNCTIONS/ to corefcn/ directory Rik <rik@octave.org> parents: 14876 diff changeset	296 @deftypefn {Built-in Function} {@var{lambda} =} qz (@var{A}, @var{B})\n\
e753177cde93 maint: Move non-dynamically linked functions from DLD-FUNCTIONS/ to corefcn/ directory Rik <rik@octave.org> parents: 14876 diff changeset	297 @deftypefnx {Built-in Function} {@var{lambda} =} qz (@var{A}, @var{B}, @var{opt})\n\
11593 1577c6f80926 Use non-breaking spaces between certain adjectives and their nouns in docstrings. Rik <octave@nomad.inbox5.com> parents: 11586 diff changeset	298 QZ@tie{}decomposition of the generalized eigenvalue problem\n\
20207 4f45eaf83908 doc: Update more docstrings to have one sentence summary as first line. Rik <rik@octave.org> parents: 19895 diff changeset	299 (@math{A x = s B x}).\n\
4f45eaf83908 doc: Update more docstrings to have one sentence summary as first line. Rik <rik@octave.org> parents: 19895 diff changeset	300 \n\
4f45eaf83908 doc: Update more docstrings to have one sentence summary as first line. Rik <rik@octave.org> parents: 19895 diff changeset	301 There are three ways to call this function:\n\
3372 f16c2ce14886 [project @ 1999-11-23 19:07:09 by jwe] jwe parents: 3187 diff changeset	302 @enumerate\n\
11553 01f703952eff Improve docstrings for functions in DLD-FUNCTIONS directory. Rik <octave@nomad.inbox5.com> parents: 11523 diff changeset	303 @item @code{@var{lambda} = qz (@var{A}, @var{B})}\n\
3185 9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	304 \n\
5016 bdbee5282954 [project @ 2004-09-22 02:50:35 by jwe] jwe parents: 4629 diff changeset	305 Computes the generalized eigenvalues\n\
bdbee5282954 [project @ 2004-09-22 02:50:35 by jwe] jwe parents: 4629 diff changeset	306 @tex\n\
bdbee5282954 [project @ 2004-09-22 02:50:35 by jwe] jwe parents: 4629 diff changeset	307 $\\lambda$\n\
bdbee5282954 [project @ 2004-09-22 02:50:35 by jwe] jwe parents: 4629 diff changeset	308 @end tex\n\
8517 81d6ab3ac93c Allow documentation tobe built for other formats than tex and info sh@sh-laptop parents: 8286 diff changeset	309 @ifnottex\n\
5016 bdbee5282954 [project @ 2004-09-22 02:50:35 by jwe] jwe parents: 4629 diff changeset	310 @var{lambda}\n\
8517 81d6ab3ac93c Allow documentation tobe built for other formats than tex and info sh@sh-laptop parents: 8286 diff changeset	311 @end ifnottex\n\
5016 bdbee5282954 [project @ 2004-09-22 02:50:35 by jwe] jwe parents: 4629 diff changeset	312 of @math{(A - s B)}.\n\
10840 89f4d7e294cc Grammarcheck .cc files Rik <octave@nomad.inbox5.com> parents: 10791 diff changeset	313 \n\
11553 01f703952eff Improve docstrings for functions in DLD-FUNCTIONS directory. Rik <octave@nomad.inbox5.com> parents: 11523 diff changeset	314 @item @code{[AA, BB, Q, Z, V, W, @var{lambda}] = qz (@var{A}, @var{B})}\n\
3185 9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	315 \n\
20207 4f45eaf83908 doc: Update more docstrings to have one sentence summary as first line. Rik <rik@octave.org> parents: 19895 diff changeset	316 Computes QZ@tie{}decomposition, generalized eigenvectors, and generalized\n\
4f45eaf83908 doc: Update more docstrings to have one sentence summary as first line. Rik <rik@octave.org> parents: 19895 diff changeset	317 eigenvalues of @math{(A - s B)}\n\
5016 bdbee5282954 [project @ 2004-09-22 02:50:35 by jwe] jwe parents: 4629 diff changeset	318 @tex\n\
bdbee5282954 [project @ 2004-09-22 02:50:35 by jwe] jwe parents: 4629 diff changeset	319 $$ AV = BV{ \\rm diag }(\\lambda) $$\n\
bdbee5282954 [project @ 2004-09-22 02:50:35 by jwe] jwe parents: 4629 diff changeset	320 $$ W^T A = { \\rm diag }(\\lambda)W^T B $$\n\
bdbee5282954 [project @ 2004-09-22 02:50:35 by jwe] jwe parents: 4629 diff changeset	321 $$ AA = Q^T AZ, BB = Q^T BZ $$\n\
bdbee5282954 [project @ 2004-09-22 02:50:35 by jwe] jwe parents: 4629 diff changeset	322 @end tex\n\
8517 81d6ab3ac93c Allow documentation tobe built for other formats than tex and info sh@sh-laptop parents: 8286 diff changeset	323 @ifnottex\n\
10840 89f4d7e294cc Grammarcheck .cc files Rik <octave@nomad.inbox5.com> parents: 10791 diff changeset	324 \n\
3372 f16c2ce14886 [project @ 1999-11-23 19:07:09 by jwe] jwe parents: 3187 diff changeset	325 @example\n\
f16c2ce14886 [project @ 1999-11-23 19:07:09 by jwe] jwe parents: 3187 diff changeset	326 @group\n\
5481 65e02518f4f5 [project @ 2005-10-04 17:12:08 by jwe] jwe parents: 5333 diff changeset	327 \n\
14360 97883071e8e4 doc: Correct off-by-1 spacings in all .cc docstrings Rik <octave@nomad.inbox5.com> parents: 14138 diff changeset	328 A * V = B * V * diag (@var{lambda})\n\
97883071e8e4 doc: Correct off-by-1 spacings in all .cc docstrings Rik <octave@nomad.inbox5.com> parents: 14138 diff changeset	329 W' * A = diag (@var{lambda}) * W' * B\n\
97883071e8e4 doc: Correct off-by-1 spacings in all .cc docstrings Rik <octave@nomad.inbox5.com> parents: 14138 diff changeset	330 AA = Q * A * Z, BB = Q * B * Z\n\
5481 65e02518f4f5 [project @ 2005-10-04 17:12:08 by jwe] jwe parents: 5333 diff changeset	331 \n\
3372 f16c2ce14886 [project @ 1999-11-23 19:07:09 by jwe] jwe parents: 3187 diff changeset	332 @end group\n\
f16c2ce14886 [project @ 1999-11-23 19:07:09 by jwe] jwe parents: 3187 diff changeset	333 @end example\n\
10840 89f4d7e294cc Grammarcheck .cc files Rik <octave@nomad.inbox5.com> parents: 10791 diff changeset	334 \n\
8517 81d6ab3ac93c Allow documentation tobe built for other formats than tex and info sh@sh-laptop parents: 8286 diff changeset	335 @end ifnottex\n\
5016 bdbee5282954 [project @ 2004-09-22 02:50:35 by jwe] jwe parents: 4629 diff changeset	336 with @var{Q} and @var{Z} orthogonal (unitary)= @var{I}\n\
3185 9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	337 \n\
11553 01f703952eff Improve docstrings for functions in DLD-FUNCTIONS directory. Rik <octave@nomad.inbox5.com> parents: 11523 diff changeset	338 @item @code{[AA,BB,Z@{, @var{lambda}@}] = qz (@var{A}, @var{B}, @var{opt})}\n\
3185 9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	339 \n\
20207 4f45eaf83908 doc: Update more docstrings to have one sentence summary as first line. Rik <rik@octave.org> parents: 19895 diff changeset	340 As in form [2], but allows ordering of generalized eigenpairs for, e.g.,\n\
4f45eaf83908 doc: Update more docstrings to have one sentence summary as first line. Rik <rik@octave.org> parents: 19895 diff changeset	341 solution of discrete time algebraic Riccati equations. Form 3 is not\n\
4f45eaf83908 doc: Update more docstrings to have one sentence summary as first line. Rik <rik@octave.org> parents: 19895 diff changeset	342 available for complex matrices, and does not compute the generalized\n\
4f45eaf83908 doc: Update more docstrings to have one sentence summary as first line. Rik <rik@octave.org> parents: 19895 diff changeset	343 eigenvectors @var{V}, @var{W}, nor the orthogonal matrix @var{Q}.\n\
10791 3140cb7a05a1 Add spellchecker scripts for Octave and run spellcheck of documentation Rik <octave@nomad.inbox5.com> parents: 10350 diff changeset	344 \n\
3372 f16c2ce14886 [project @ 1999-11-23 19:07:09 by jwe] jwe parents: 3187 diff changeset	345 @table @var\n\
f16c2ce14886 [project @ 1999-11-23 19:07:09 by jwe] jwe parents: 3187 diff changeset	346 @item opt\n\
20207 4f45eaf83908 doc: Update more docstrings to have one sentence summary as first line. Rik <rik@octave.org> parents: 19895 diff changeset	347 for ordering eigenvalues of the @nospell{GEP} pencil. The leading block of\n\
4f45eaf83908 doc: Update more docstrings to have one sentence summary as first line. Rik <rik@octave.org> parents: 19895 diff changeset	348 the revised pencil contains all eigenvalues that satisfy:\n\
14360 97883071e8e4 doc: Correct off-by-1 spacings in all .cc docstrings Rik <octave@nomad.inbox5.com> parents: 14138 diff changeset	349 \n\
11553 01f703952eff Improve docstrings for functions in DLD-FUNCTIONS directory. Rik <octave@nomad.inbox5.com> parents: 11523 diff changeset	350 @table @asis\n\
17281 bc924baa2c4e doc: Add new @qcode macro for code samples which are quoted. Rik <rik@octave.org> parents: 17097 diff changeset	351 @item @qcode{\"N\"}\n\
12642 f96b9b9f141b doc: Periodic grammarcheck and spellcheck of documentation. Rik <octave@nomad.inbox5.com> parents: 11593 diff changeset	352 = unordered (default)\n\
3183 5edc539c2f80 [project @ 1998-09-25 03:37:22 by jwe] jwe parents: diff changeset	353 \n\
17281 bc924baa2c4e doc: Add new @qcode macro for code samples which are quoted. Rik <rik@octave.org> parents: 17097 diff changeset	354 @item @qcode{\"S\"}\n\
12642 f96b9b9f141b doc: Periodic grammarcheck and spellcheck of documentation. Rik <octave@nomad.inbox5.com> parents: 11593 diff changeset	355 = small: leading block has all \|lambda\| @leq{} 1\n\
3185 9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	356 \n\
17281 bc924baa2c4e doc: Add new @qcode macro for code samples which are quoted. Rik <rik@octave.org> parents: 17097 diff changeset	357 @item @qcode{\"B\"}\n\
12642 f96b9b9f141b doc: Periodic grammarcheck and spellcheck of documentation. Rik <octave@nomad.inbox5.com> parents: 11593 diff changeset	358 = big: leading block has all \|lambda\| @geq{} 1\n\
3372 f16c2ce14886 [project @ 1999-11-23 19:07:09 by jwe] jwe parents: 3187 diff changeset	359 \n\
17281 bc924baa2c4e doc: Add new @qcode macro for code samples which are quoted. Rik <rik@octave.org> parents: 17097 diff changeset	360 @item @qcode{\"-\"}\n\
5481 65e02518f4f5 [project @ 2005-10-04 17:12:08 by jwe] jwe parents: 5333 diff changeset	361 = negative real part: leading block has all eigenvalues\n\
65e02518f4f5 [project @ 2005-10-04 17:12:08 by jwe] jwe parents: 5333 diff changeset	362 in the open left half-plane\n\
3372 f16c2ce14886 [project @ 1999-11-23 19:07:09 by jwe] jwe parents: 3187 diff changeset	363 \n\
17281 bc924baa2c4e doc: Add new @qcode macro for code samples which are quoted. Rik <rik@octave.org> parents: 17097 diff changeset	364 @item @qcode{\"+\"}\n\
9209 923c7cb7f13f Simplify TeXinfo files by eliminating redundant @iftex followed by @tex construction. Rik <rdrider0-list@yahoo.com> parents: 9064 diff changeset	365 = non-negative real part: leading block has all eigenvalues\n\
5481 65e02518f4f5 [project @ 2005-10-04 17:12:08 by jwe] jwe parents: 5333 diff changeset	366 in the closed right half-plane\n\
9064 7c02ec148a3c Check grammar on all .cc files Rik <rdrider0-list@yahoo.com> parents: 8927 diff changeset	367 @end table\n\
3372 f16c2ce14886 [project @ 1999-11-23 19:07:09 by jwe] jwe parents: 3187 diff changeset	368 @end table\n\
f16c2ce14886 [project @ 1999-11-23 19:07:09 by jwe] jwe parents: 3187 diff changeset	369 @end enumerate\n\
3183 5edc539c2f80 [project @ 1998-09-25 03:37:22 by jwe] jwe parents: diff changeset	370 \n\
11553 01f703952eff Improve docstrings for functions in DLD-FUNCTIONS directory. Rik <octave@nomad.inbox5.com> parents: 11523 diff changeset	371 Note: @code{qz} performs permutation balancing, but not scaling\n\
17097 e7a059a9a644 doc: Use XREF as anchor prefix in documentation for clearer results in Info viewer. Rik <rik@octave.org> parents: 16920 diff changeset	372 (@pxref{XREFbalance}). The order of output arguments was selected for\n\
11553 01f703952eff Improve docstrings for functions in DLD-FUNCTIONS directory. Rik <octave@nomad.inbox5.com> parents: 11523 diff changeset	373 compatibility with @sc{matlab}.\n\
16920 53eaa83e4181 doc: Add seealso links between various factorization forms. Rik <rik@octave.org> parents: 16826 diff changeset	374 @seealso{eig, balance, lu, chol, hess, qr, qzhess, schur, svd}\n\
3372 f16c2ce14886 [project @ 1999-11-23 19:07:09 by jwe] jwe parents: 3187 diff changeset	375 @end deftypefn")
3183 5edc539c2f80 [project @ 1998-09-25 03:37:22 by jwe] jwe parents: diff changeset	376 {
5edc539c2f80 [project @ 1998-09-25 03:37:22 by jwe] jwe parents: diff changeset	377 octave_value_list retval;
5edc539c2f80 [project @ 1998-09-25 03:37:22 by jwe] jwe parents: diff changeset	378 int nargin = args.length ();
5edc539c2f80 [project @ 1998-09-25 03:37:22 by jwe] jwe parents: diff changeset	379
3185 9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	380 #ifdef DEBUG
17787 175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	381 std::cout << "qz: nargin = " << nargin
175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	382 << ", nargout = " << nargout << std::endl;
3185 9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	383 #endif
3183 5edc539c2f80 [project @ 1998-09-25 03:37:22 by jwe] jwe parents: diff changeset	384
3185 9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	385 if (nargin < 2 \|\| nargin > 3 \|\| nargout > 7)
9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	386 {
5823 080c08b192d8 [project @ 2006-05-19 05:32:17 by jwe] jwe parents: 5775 diff changeset	387 print_usage ();
3185 9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	388 return retval;
9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	389 }
9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	390 else if (nargin == 3 && (nargout < 3 \|\| nargout > 4))
9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	391 {
3427 e098ebb77023 [project @ 2000-01-13 09:25:53 by jwe] jwe parents: 3372 diff changeset	392 error ("qz: invalid number of output arguments for form [3] call");
3185 9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	393 return retval;
9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	394 }
3183 5edc539c2f80 [project @ 1998-09-25 03:37:22 by jwe] jwe parents: diff changeset	395
3185 9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	396 #ifdef DEBUG
3538 0ff7323dab8b [project @ 2000-02-02 12:36:25 by jwe] jwe parents: 3531 diff changeset	397 std::cout << "qz: determine ordering option" << std::endl;
3185 9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	398 #endif
3183 5edc539c2f80 [project @ 1998-09-25 03:37:22 by jwe] jwe parents: diff changeset	399
10311 a217e1d74353 untabify qz.cc John W. Eaton <jwe@octave.org> parents: 10307 diff changeset	400 // Determine ordering option.
8927 d75f4ee0538d qz.cc (Fqz): avoid maybe clobbred by vfork warning from GCC John W. Eaton <jwe@octave.org> parents: 8920 diff changeset	401 volatile char ord_job = 0;
3183 5edc539c2f80 [project @ 1998-09-25 03:37:22 by jwe] jwe parents: diff changeset	402 static double safmin;
3185 9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	403
9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	404 if (nargin == 2)
8927 d75f4ee0538d qz.cc (Fqz): avoid maybe clobbred by vfork warning from GCC John W. Eaton <jwe@octave.org> parents: 8920 diff changeset	405 ord_job = 'N';
3185 9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	406 else
9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	407 {
20616 fd0efcdb3718 use new string_value method to handle value extraction errors John W. Eaton <jwe@octave.org> parents: 20587 diff changeset	408 std::string tmp = args(2).string_value ("qz: OPT must be a string");
8927 d75f4ee0538d qz.cc (Fqz): avoid maybe clobbred by vfork warning from GCC John W. Eaton <jwe@octave.org> parents: 8920 diff changeset	409
d75f4ee0538d qz.cc (Fqz): avoid maybe clobbred by vfork warning from GCC John W. Eaton <jwe@octave.org> parents: 8920 diff changeset	410 if (! tmp.empty ())
10154 40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	411 ord_job = tmp[0];
3183 5edc539c2f80 [project @ 1998-09-25 03:37:22 by jwe] jwe parents: diff changeset	412
8927 d75f4ee0538d qz.cc (Fqz): avoid maybe clobbred by vfork warning from GCC John W. Eaton <jwe@octave.org> parents: 8920 diff changeset	413 if (! (ord_job == 'N' \|\| ord_job == 'n'
10154 40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	414 \|\| ord_job == 'S' \|\| ord_job == 's'
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	415 \|\| ord_job == 'B' \|\| ord_job == 'b'
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	416 \|\| ord_job == '+' \|\| ord_job == '-'))
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	417 {
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	418 error ("qz: invalid order option");
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	419 return retval;
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	420 }
3185 9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	421
9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	422 // overflow constant required by dlag2
4552 6f3382e08a52 [project @ 2003-10-27 20:38:02 by jwe] jwe parents: 4153 diff changeset	423 F77_FUNC (xdlamch, XDLAMCH) (F77_CONST_CHAR_ARG2 ("S", 1),
10154 40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	424 safmin
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	425 F77_CHAR_ARG_LEN (1));
3183 5edc539c2f80 [project @ 1998-09-25 03:37:22 by jwe] jwe parents: diff changeset	426
3185 9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	427 #ifdef DEBUG_EIG
17787 175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	428 std::cout << "qz: initial value of safmin="
175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	429 << setiosflags (std::ios::scientific)
175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	430 << safmin << std::endl;
3185 9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	431 #endif
3183 5edc539c2f80 [project @ 1998-09-25 03:37:22 by jwe] jwe parents: diff changeset	432
10311 a217e1d74353 untabify qz.cc John W. Eaton <jwe@octave.org> parents: 10307 diff changeset	433 // Some machines (e.g., DEC alpha) get safmin = 0;
a217e1d74353 untabify qz.cc John W. Eaton <jwe@octave.org> parents: 10307 diff changeset	434 // for these, use eps instead to avoid problems in dlag2.
3185 9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	435 if (safmin == 0)
10154 40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	436 {
3185 9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	437 #ifdef DEBUG_EIG
10154 40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	438 std::cout << "qz: DANGER WILL ROBINSON: safmin is 0!" << std::endl;
3185 9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	439 #endif
3183 5edc539c2f80 [project @ 1998-09-25 03:37:22 by jwe] jwe parents: diff changeset	440
10154 40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	441 F77_FUNC (xdlamch, XDLAMCH) (F77_CONST_CHAR_ARG2 ("E", 1),
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	442 safmin
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	443 F77_CHAR_ARG_LEN (1));
3185 9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	444
9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	445 #ifdef DEBUG_EIG
17787 175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	446 std::cout << "qz: safmin set to "
175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	447 << setiosflags (std::ios::scientific)
175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	448 << safmin << std::endl;
3185 9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	449 #endif
10154 40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	450 }
3183 5edc539c2f80 [project @ 1998-09-25 03:37:22 by jwe] jwe parents: diff changeset	451 }
5edc539c2f80 [project @ 1998-09-25 03:37:22 by jwe] jwe parents: diff changeset	452
3185 9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	453 #ifdef DEBUG
3538 0ff7323dab8b [project @ 2000-02-02 12:36:25 by jwe] jwe parents: 3531 diff changeset	454 std::cout << "qz: check argument 1" << std::endl;
3185 9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	455 #endif
3183 5edc539c2f80 [project @ 1998-09-25 03:37:22 by jwe] jwe parents: diff changeset	456
10311 a217e1d74353 untabify qz.cc John W. Eaton <jwe@octave.org> parents: 10307 diff changeset	457 // Argument 1: check if it's o.k. dimensioned.
5275 23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe] jwe parents: 5016 diff changeset	458 octave_idx_type nn = args(0).rows ();
3185 9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	459
9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	460 #ifdef DEBUG
17787 175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	461 std::cout << "argument 1 dimensions: ("
175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	462 << nn << "," << args(0).columns () << ")"
175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	463 << std::endl;
3185 9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	464 #endif
9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	465
9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	466 int arg_is_empty = empty_arg ("qz", nn, args(0).columns ());
9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	467
3183 5edc539c2f80 [project @ 1998-09-25 03:37:22 by jwe] jwe parents: diff changeset	468 if (arg_is_empty < 0)
3185 9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	469 {
9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	470 gripe_empty_arg ("qz: parameter 1", 0);
9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	471 return retval;
9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	472 }
3183 5edc539c2f80 [project @ 1998-09-25 03:37:22 by jwe] jwe parents: diff changeset	473 else if (arg_is_empty > 0)
3185 9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	474 {
9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	475 gripe_empty_arg ("qz: parameter 1; continuing", 0);
9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	476 return octave_value_list (2, Matrix ());
9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	477 }
9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	478 else if (args(0).columns () != nn)
9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	479 {
9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	480 gripe_square_matrix_required ("qz");
9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	481 return retval;
9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	482 }
3183 5edc539c2f80 [project @ 1998-09-25 03:37:22 by jwe] jwe parents: diff changeset	483
10311 a217e1d74353 untabify qz.cc John W. Eaton <jwe@octave.org> parents: 10307 diff changeset	484 // Argument 1: dimensions look good; get the value.
3183 5edc539c2f80 [project @ 1998-09-25 03:37:22 by jwe] jwe parents: diff changeset	485 Matrix aa;
5edc539c2f80 [project @ 1998-09-25 03:37:22 by jwe] jwe parents: diff changeset	486 ComplexMatrix caa;
3185 9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	487
9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	488 if (args(0).is_complex_type ())
3183 5edc539c2f80 [project @ 1998-09-25 03:37:22 by jwe] jwe parents: diff changeset	489 caa = args(0).complex_matrix_value ();
3185 9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	490 else
3183 5edc539c2f80 [project @ 1998-09-25 03:37:22 by jwe] jwe parents: diff changeset	491 aa = args(0).matrix_value ();
3185 9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	492
9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	493 #ifdef DEBUG
3538 0ff7323dab8b [project @ 2000-02-02 12:36:25 by jwe] jwe parents: 3531 diff changeset	494 std::cout << "qz: check argument 2" << std::endl;
3185 9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	495 #endif
3183 5edc539c2f80 [project @ 1998-09-25 03:37:22 by jwe] jwe parents: diff changeset	496
10311 a217e1d74353 untabify qz.cc John W. Eaton <jwe@octave.org> parents: 10307 diff changeset	497 // Extract argument 2 (bb, or cbb if complex).
3185 9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	498 if ((nn != args(1).columns ()) \|\| (nn != args(1).rows ()))
9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	499 {
9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	500 gripe_nonconformant ();
9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	501 return retval;
9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	502 }
9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	503
3183 5edc539c2f80 [project @ 1998-09-25 03:37:22 by jwe] jwe parents: diff changeset	504 Matrix bb;
5edc539c2f80 [project @ 1998-09-25 03:37:22 by jwe] jwe parents: diff changeset	505 ComplexMatrix cbb;
3185 9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	506
9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	507 if (args(1).is_complex_type ())
3183 5edc539c2f80 [project @ 1998-09-25 03:37:22 by jwe] jwe parents: diff changeset	508 cbb = args(1).complex_matrix_value ();
5edc539c2f80 [project @ 1998-09-25 03:37:22 by jwe] jwe parents: diff changeset	509 else
5edc539c2f80 [project @ 1998-09-25 03:37:22 by jwe] jwe parents: diff changeset	510 bb = args(1).matrix_value ();
3185 9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	511
3183 5edc539c2f80 [project @ 1998-09-25 03:37:22 by jwe] jwe parents: diff changeset	512 // Both matrices loaded, now let's check what kind of arithmetic:
10311 a217e1d74353 untabify qz.cc John W. Eaton <jwe@octave.org> parents: 10307 diff changeset	513 // declared volatile to avoid compiler warnings about long jumps,
a217e1d74353 untabify qz.cc John W. Eaton <jwe@octave.org> parents: 10307 diff changeset	514 // vforks.
3185 9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	515
10311 a217e1d74353 untabify qz.cc John W. Eaton <jwe@octave.org> parents: 10307 diff changeset	516 volatile int complex_case
3185 9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	517 = (args(0).is_complex_type () \|\| args(1).is_complex_type ());
10311 a217e1d74353 untabify qz.cc John W. Eaton <jwe@octave.org> parents: 10307 diff changeset	518
3185 9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	519 if (nargin == 3 && complex_case)
9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	520 {
11553 01f703952eff Improve docstrings for functions in DLD-FUNCTIONS directory. Rik <octave@nomad.inbox5.com> parents: 11523 diff changeset	521 error ("qz: cannot re-order complex qz decomposition");
3185 9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	522 return retval;
9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	523 }
3183 5edc539c2f80 [project @ 1998-09-25 03:37:22 by jwe] jwe parents: diff changeset	524
10311 a217e1d74353 untabify qz.cc John W. Eaton <jwe@octave.org> parents: 10307 diff changeset	525 // First, declare variables used in both the real and complex case.
3183 5edc539c2f80 [project @ 1998-09-25 03:37:22 by jwe] jwe parents: diff changeset	526 Matrix QQ(nn,nn), ZZ(nn,nn), VR(nn,nn), VL(nn,nn);
5edc539c2f80 [project @ 1998-09-25 03:37:22 by jwe] jwe parents: diff changeset	527 RowVector alphar(nn), alphai(nn), betar(nn);
10307 4e4270ab70d6 support complex case in qz Jyh-miin Lin <jyhmiinlin@gmail.com> parents: 10155 diff changeset	528 ComplexRowVector xalpha(nn), xbeta(nn);
3185 9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	529 ComplexMatrix CQ(nn,nn), CZ(nn,nn), CVR(nn,nn), CVL(nn,nn);
5275 23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe] jwe parents: 5016 diff changeset	530 octave_idx_type ilo, ihi, info;
3185 9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	531 char compq = (nargout >= 3 ? 'V' : 'N');
14876 54a386f2ac4e correcly compute Z for 3-output call to qz (bug #36728) John W. Eaton <jwe@octave.org> parents: 14844 diff changeset	532 char compz = ((nargout >= 4 \|\| nargin == 3)? 'V' : 'N');
3183 5edc539c2f80 [project @ 1998-09-25 03:37:22 by jwe] jwe parents: diff changeset	533
10311 a217e1d74353 untabify qz.cc John W. Eaton <jwe@octave.org> parents: 10307 diff changeset	534 // Initialize Q, Z to identity if we need either of them.
3185 9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	535 if (compq == 'V' \|\| compz == 'V')
5275 23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe] jwe parents: 5016 diff changeset	536 for (octave_idx_type ii = 0; ii < nn; ii++)
23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe] jwe parents: 5016 diff changeset	537 for (octave_idx_type jj = 0; jj < nn; jj++)
10154 40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	538 {
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	539 OCTAVE_QUIT;
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	540 QQ(ii,jj) = ZZ(ii,jj) = (ii == jj ? 1.0 : 0.0);
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	541 }
3183 5edc539c2f80 [project @ 1998-09-25 03:37:22 by jwe] jwe parents: diff changeset	542
10311 a217e1d74353 untabify qz.cc John W. Eaton <jwe@octave.org> parents: 10307 diff changeset	543 // Always perform permutation balancing.
4552 6f3382e08a52 [project @ 2003-10-27 20:38:02 by jwe] jwe parents: 4153 diff changeset	544 const char bal_job = 'P';
10311 a217e1d74353 untabify qz.cc John W. Eaton <jwe@octave.org> parents: 10307 diff changeset	545 RowVector lscale (nn), rscale (nn), work (6 * nn), rwork (nn);
3183 5edc539c2f80 [project @ 1998-09-25 03:37:22 by jwe] jwe parents: diff changeset	546
3185 9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	547 if (complex_case)
9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	548 {
10307 4e4270ab70d6 support complex case in qz Jyh-miin Lin <jyhmiinlin@gmail.com> parents: 10155 diff changeset	549 #ifdef DEBUG
4e4270ab70d6 support complex case in qz Jyh-miin Lin <jyhmiinlin@gmail.com> parents: 10155 diff changeset	550 if (compq == 'V')
17787 175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	551 std::cout << "qz: performing balancing; CQ=" << std::endl
175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	552 << CQ << std::endl;
10307 4e4270ab70d6 support complex case in qz Jyh-miin Lin <jyhmiinlin@gmail.com> parents: 10155 diff changeset	553 #endif
4e4270ab70d6 support complex case in qz Jyh-miin Lin <jyhmiinlin@gmail.com> parents: 10155 diff changeset	554 if (args(0).is_real_type ())
10311 a217e1d74353 untabify qz.cc John W. Eaton <jwe@octave.org> parents: 10307 diff changeset	555 caa = ComplexMatrix (aa);
10307 4e4270ab70d6 support complex case in qz Jyh-miin Lin <jyhmiinlin@gmail.com> parents: 10155 diff changeset	556
4e4270ab70d6 support complex case in qz Jyh-miin Lin <jyhmiinlin@gmail.com> parents: 10155 diff changeset	557 if (args(1).is_real_type ())
10311 a217e1d74353 untabify qz.cc John W. Eaton <jwe@octave.org> parents: 10307 diff changeset	558 cbb = ComplexMatrix (bb);
10307 4e4270ab70d6 support complex case in qz Jyh-miin Lin <jyhmiinlin@gmail.com> parents: 10155 diff changeset	559
4e4270ab70d6 support complex case in qz Jyh-miin Lin <jyhmiinlin@gmail.com> parents: 10155 diff changeset	560 if (compq == 'V')
10311 a217e1d74353 untabify qz.cc John W. Eaton <jwe@octave.org> parents: 10307 diff changeset	561 CQ = ComplexMatrix (QQ);
10307 4e4270ab70d6 support complex case in qz Jyh-miin Lin <jyhmiinlin@gmail.com> parents: 10155 diff changeset	562
4e4270ab70d6 support complex case in qz Jyh-miin Lin <jyhmiinlin@gmail.com> parents: 10155 diff changeset	563 if (compz == 'V')
10311 a217e1d74353 untabify qz.cc John W. Eaton <jwe@octave.org> parents: 10307 diff changeset	564 CZ = ComplexMatrix (ZZ);
10307 4e4270ab70d6 support complex case in qz Jyh-miin Lin <jyhmiinlin@gmail.com> parents: 10155 diff changeset	565
10311 a217e1d74353 untabify qz.cc John W. Eaton <jwe@octave.org> parents: 10307 diff changeset	566 F77_XFCN (zggbal, ZGGBAL,
a217e1d74353 untabify qz.cc John W. Eaton <jwe@octave.org> parents: 10307 diff changeset	567 (F77_CONST_CHAR_ARG2 (&bal_job, 1),
a217e1d74353 untabify qz.cc John W. Eaton <jwe@octave.org> parents: 10307 diff changeset	568 nn, caa.fortran_vec (), nn, cbb.fortran_vec (),
a217e1d74353 untabify qz.cc John W. Eaton <jwe@octave.org> parents: 10307 diff changeset	569 nn, ilo, ihi, lscale.fortran_vec (),
a217e1d74353 untabify qz.cc John W. Eaton <jwe@octave.org> parents: 10307 diff changeset	570 rscale.fortran_vec (), work.fortran_vec (), info
a217e1d74353 untabify qz.cc John W. Eaton <jwe@octave.org> parents: 10307 diff changeset	571 F77_CHAR_ARG_LEN (1)));
3185 9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	572 }
3183 5edc539c2f80 [project @ 1998-09-25 03:37:22 by jwe] jwe parents: diff changeset	573 else
3185 9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	574 {
9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	575 #ifdef DEBUG
9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	576 if (compq == 'V')
17787 175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	577 std::cout << "qz: performing balancing; QQ=" << std::endl
175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	578 << QQ << std::endl;
3185 9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	579 #endif
3183 5edc539c2f80 [project @ 1998-09-25 03:37:22 by jwe] jwe parents: diff changeset	580
3185 9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	581 F77_XFCN (dggbal, DGGBAL,
10154 40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	582 (F77_CONST_CHAR_ARG2 (&bal_job, 1),
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	583 nn, aa.fortran_vec (), nn, bb.fortran_vec (),
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	584 nn, ilo, ihi, lscale.fortran_vec (),
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	585 rscale.fortran_vec (), work.fortran_vec (), info
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	586 F77_CHAR_ARG_LEN (1)));
3185 9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	587 }
3183 5edc539c2f80 [project @ 1998-09-25 03:37:22 by jwe] jwe parents: diff changeset	588
5edc539c2f80 [project @ 1998-09-25 03:37:22 by jwe] jwe parents: diff changeset	589 // Since we just want the balancing matrices, we can use dggbal
10311 a217e1d74353 untabify qz.cc John W. Eaton <jwe@octave.org> parents: 10307 diff changeset	590 // for both the real and complex cases; left first
3185 9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	591
10311 a217e1d74353 untabify qz.cc John W. Eaton <jwe@octave.org> parents: 10307 diff changeset	592 #if 0
a217e1d74353 untabify qz.cc John W. Eaton <jwe@octave.org> parents: 10307 diff changeset	593 if (compq == 'V')
3185 9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	594 {
9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	595 F77_XFCN (dggbak, DGGBAK,
10154 40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	596 (F77_CONST_CHAR_ARG2 (&bal_job, 1),
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	597 F77_CONST_CHAR_ARG2 ("L", 1),
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	598 nn, ilo, ihi, lscale.data (), rscale.data (),
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	599 nn, QQ.fortran_vec (), nn, info
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	600 F77_CHAR_ARG_LEN (1)
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	601 F77_CHAR_ARG_LEN (1)));
3183 5edc539c2f80 [project @ 1998-09-25 03:37:22 by jwe] jwe parents: diff changeset	602
3185 9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	603 #ifdef DEBUG
9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	604 if (compq == 'V')
10154 40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	605 std::cout << "qz: balancing done; QQ=" << std::endl << QQ << std::endl;
3185 9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	606 #endif
3183 5edc539c2f80 [project @ 1998-09-25 03:37:22 by jwe] jwe parents: diff changeset	607 }
5edc539c2f80 [project @ 1998-09-25 03:37:22 by jwe] jwe parents: diff changeset	608
5edc539c2f80 [project @ 1998-09-25 03:37:22 by jwe] jwe parents: diff changeset	609 // then right
3185 9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	610 if (compz == 'V')
9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	611 {
4552 6f3382e08a52 [project @ 2003-10-27 20:38:02 by jwe] jwe parents: 4153 diff changeset	612 F77_XFCN (dggbak, DGGBAK,
10154 40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	613 (F77_CONST_CHAR_ARG2 (&bal_job, 1),
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	614 F77_CONST_CHAR_ARG2 ("R", 1),
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	615 nn, ilo, ihi, lscale.data (), rscale.data (),
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	616 nn, ZZ.fortran_vec (), nn, info
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	617 F77_CHAR_ARG_LEN (1)
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	618 F77_CHAR_ARG_LEN (1)));
3183 5edc539c2f80 [project @ 1998-09-25 03:37:22 by jwe] jwe parents: diff changeset	619
3185 9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	620 #ifdef DEBUG
9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	621 if (compz == 'V')
10154 40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	622 std::cout << "qz: balancing done; ZZ=" << std::endl << ZZ << std::endl;
3185 9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	623 #endif
10311 a217e1d74353 untabify qz.cc John W. Eaton <jwe@octave.org> parents: 10307 diff changeset	624 }
a217e1d74353 untabify qz.cc John W. Eaton <jwe@octave.org> parents: 10307 diff changeset	625 #endif
3183 5edc539c2f80 [project @ 1998-09-25 03:37:22 by jwe] jwe parents: diff changeset	626
5edc539c2f80 [project @ 1998-09-25 03:37:22 by jwe] jwe parents: diff changeset	627 static char qz_job;
11586 12df7854fa7c strip trailing whitespace from source files John W. Eaton <jwe@octave.org> parents: 11570 diff changeset	628 qz_job = (nargout < 2 ? 'E' : 'S');
3185 9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	629
3183 5edc539c2f80 [project @ 1998-09-25 03:37:22 by jwe] jwe parents: diff changeset	630 if (complex_case)
3185 9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	631 {
10311 a217e1d74353 untabify qz.cc John W. Eaton <jwe@octave.org> parents: 10307 diff changeset	632 // Complex case.
a217e1d74353 untabify qz.cc John W. Eaton <jwe@octave.org> parents: 10307 diff changeset	633
a217e1d74353 untabify qz.cc John W. Eaton <jwe@octave.org> parents: 10307 diff changeset	634 // The QR decomposition of cbb.
a217e1d74353 untabify qz.cc John W. Eaton <jwe@octave.org> parents: 10307 diff changeset	635 ComplexQR cbqr (cbb);
a217e1d74353 untabify qz.cc John W. Eaton <jwe@octave.org> parents: 10307 diff changeset	636 // The R matrix of QR decomposition for cbb.
a217e1d74353 untabify qz.cc John W. Eaton <jwe@octave.org> parents: 10307 diff changeset	637 cbb = cbqr.R ();
a217e1d74353 untabify qz.cc John W. Eaton <jwe@octave.org> parents: 10307 diff changeset	638 // (Q*)caa for following work.
a217e1d74353 untabify qz.cc John W. Eaton <jwe@octave.org> parents: 10307 diff changeset	639 caa = (cbqr.Q ().hermitian ()) * caa;
a217e1d74353 untabify qz.cc John W. Eaton <jwe@octave.org> parents: 10307 diff changeset	640 CQ = CQ * cbqr.Q ();
a217e1d74353 untabify qz.cc John W. Eaton <jwe@octave.org> parents: 10307 diff changeset	641
10307 4e4270ab70d6 support complex case in qz Jyh-miin Lin <jyhmiinlin@gmail.com> parents: 10155 diff changeset	642 F77_XFCN (zgghrd, ZGGHRD,
4e4270ab70d6 support complex case in qz Jyh-miin Lin <jyhmiinlin@gmail.com> parents: 10155 diff changeset	643 (F77_CONST_CHAR_ARG2 (&compq, 1),
4e4270ab70d6 support complex case in qz Jyh-miin Lin <jyhmiinlin@gmail.com> parents: 10155 diff changeset	644 F77_CONST_CHAR_ARG2 (&compz, 1),
4e4270ab70d6 support complex case in qz Jyh-miin Lin <jyhmiinlin@gmail.com> parents: 10155 diff changeset	645 nn, ilo, ihi, caa.fortran_vec (),
4e4270ab70d6 support complex case in qz Jyh-miin Lin <jyhmiinlin@gmail.com> parents: 10155 diff changeset	646 nn, cbb.fortran_vec (), nn, CQ.fortran_vec (), nn,
4e4270ab70d6 support complex case in qz Jyh-miin Lin <jyhmiinlin@gmail.com> parents: 10155 diff changeset	647 CZ.fortran_vec (), nn, info
4e4270ab70d6 support complex case in qz Jyh-miin Lin <jyhmiinlin@gmail.com> parents: 10155 diff changeset	648 F77_CHAR_ARG_LEN (1)
4e4270ab70d6 support complex case in qz Jyh-miin Lin <jyhmiinlin@gmail.com> parents: 10155 diff changeset	649 F77_CHAR_ARG_LEN (1)));
10311 a217e1d74353 untabify qz.cc John W. Eaton <jwe@octave.org> parents: 10307 diff changeset	650
11586 12df7854fa7c strip trailing whitespace from source files John W. Eaton <jwe@octave.org> parents: 11570 diff changeset	651 ComplexRowVector cwork (1 * nn);
10311 a217e1d74353 untabify qz.cc John W. Eaton <jwe@octave.org> parents: 10307 diff changeset	652
10307 4e4270ab70d6 support complex case in qz Jyh-miin Lin <jyhmiinlin@gmail.com> parents: 10155 diff changeset	653 F77_XFCN (zhgeqz, ZHGEQZ,
4e4270ab70d6 support complex case in qz Jyh-miin Lin <jyhmiinlin@gmail.com> parents: 10155 diff changeset	654 (F77_CONST_CHAR_ARG2 (&qz_job, 1),
4e4270ab70d6 support complex case in qz Jyh-miin Lin <jyhmiinlin@gmail.com> parents: 10155 diff changeset	655 F77_CONST_CHAR_ARG2 (&compq, 1),
4e4270ab70d6 support complex case in qz Jyh-miin Lin <jyhmiinlin@gmail.com> parents: 10155 diff changeset	656 F77_CONST_CHAR_ARG2 (&compz, 1),
11586 12df7854fa7c strip trailing whitespace from source files John W. Eaton <jwe@octave.org> parents: 11570 diff changeset	657 nn, ilo, ihi,
12df7854fa7c strip trailing whitespace from source files John W. Eaton <jwe@octave.org> parents: 11570 diff changeset	658 caa.fortran_vec (), nn,
12df7854fa7c strip trailing whitespace from source files John W. Eaton <jwe@octave.org> parents: 11570 diff changeset	659 cbb.fortran_vec (),nn,
12df7854fa7c strip trailing whitespace from source files John W. Eaton <jwe@octave.org> parents: 11570 diff changeset	660 xalpha.fortran_vec (), xbeta.fortran_vec (),
10307 4e4270ab70d6 support complex case in qz Jyh-miin Lin <jyhmiinlin@gmail.com> parents: 10155 diff changeset	661 CQ.fortran_vec (), nn,
11586 12df7854fa7c strip trailing whitespace from source files John W. Eaton <jwe@octave.org> parents: 11570 diff changeset	662 CZ.fortran_vec (), nn,
10307 4e4270ab70d6 support complex case in qz Jyh-miin Lin <jyhmiinlin@gmail.com> parents: 10155 diff changeset	663 cwork.fortran_vec (), nn, rwork.fortran_vec (), info
4e4270ab70d6 support complex case in qz Jyh-miin Lin <jyhmiinlin@gmail.com> parents: 10155 diff changeset	664 F77_CHAR_ARG_LEN (1)
4e4270ab70d6 support complex case in qz Jyh-miin Lin <jyhmiinlin@gmail.com> parents: 10155 diff changeset	665 F77_CHAR_ARG_LEN (1)
11586 12df7854fa7c strip trailing whitespace from source files John W. Eaton <jwe@octave.org> parents: 11570 diff changeset	666 F77_CHAR_ARG_LEN (1)));
3185 9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	667
11586 12df7854fa7c strip trailing whitespace from source files John W. Eaton <jwe@octave.org> parents: 11570 diff changeset	668 if (compq == 'V')
10307 4e4270ab70d6 support complex case in qz Jyh-miin Lin <jyhmiinlin@gmail.com> parents: 10155 diff changeset	669 {
10311 a217e1d74353 untabify qz.cc John W. Eaton <jwe@octave.org> parents: 10307 diff changeset	670 // Left eigenvector.
10307 4e4270ab70d6 support complex case in qz Jyh-miin Lin <jyhmiinlin@gmail.com> parents: 10155 diff changeset	671 F77_XFCN (zggbak, ZGGBAK,
4e4270ab70d6 support complex case in qz Jyh-miin Lin <jyhmiinlin@gmail.com> parents: 10155 diff changeset	672 (F77_CONST_CHAR_ARG2 (&bal_job, 1),
4e4270ab70d6 support complex case in qz Jyh-miin Lin <jyhmiinlin@gmail.com> parents: 10155 diff changeset	673 F77_CONST_CHAR_ARG2 ("L", 1),
4e4270ab70d6 support complex case in qz Jyh-miin Lin <jyhmiinlin@gmail.com> parents: 10155 diff changeset	674 nn, ilo, ihi, lscale.data (), rscale.data (),
4e4270ab70d6 support complex case in qz Jyh-miin Lin <jyhmiinlin@gmail.com> parents: 10155 diff changeset	675 nn, CQ.fortran_vec (), nn, info
4e4270ab70d6 support complex case in qz Jyh-miin Lin <jyhmiinlin@gmail.com> parents: 10155 diff changeset	676 F77_CHAR_ARG_LEN (1)
4e4270ab70d6 support complex case in qz Jyh-miin Lin <jyhmiinlin@gmail.com> parents: 10155 diff changeset	677 F77_CHAR_ARG_LEN (1)));
11586 12df7854fa7c strip trailing whitespace from source files John W. Eaton <jwe@octave.org> parents: 11570 diff changeset	678 }
3185 9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	679
10311 a217e1d74353 untabify qz.cc John W. Eaton <jwe@octave.org> parents: 10307 diff changeset	680 // Right eigenvector.
3185 9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	681 if (compz == 'V')
10307 4e4270ab70d6 support complex case in qz Jyh-miin Lin <jyhmiinlin@gmail.com> parents: 10155 diff changeset	682 {
4e4270ab70d6 support complex case in qz Jyh-miin Lin <jyhmiinlin@gmail.com> parents: 10155 diff changeset	683 F77_XFCN (zggbak, ZGGBAK,
4e4270ab70d6 support complex case in qz Jyh-miin Lin <jyhmiinlin@gmail.com> parents: 10155 diff changeset	684 (F77_CONST_CHAR_ARG2 (&bal_job, 1),
4e4270ab70d6 support complex case in qz Jyh-miin Lin <jyhmiinlin@gmail.com> parents: 10155 diff changeset	685 F77_CONST_CHAR_ARG2 ("R", 1),
4e4270ab70d6 support complex case in qz Jyh-miin Lin <jyhmiinlin@gmail.com> parents: 10155 diff changeset	686 nn, ilo, ihi, lscale.data (), rscale.data (),
4e4270ab70d6 support complex case in qz Jyh-miin Lin <jyhmiinlin@gmail.com> parents: 10155 diff changeset	687 nn, CZ.fortran_vec (), nn, info
4e4270ab70d6 support complex case in qz Jyh-miin Lin <jyhmiinlin@gmail.com> parents: 10155 diff changeset	688 F77_CHAR_ARG_LEN (1)
4e4270ab70d6 support complex case in qz Jyh-miin Lin <jyhmiinlin@gmail.com> parents: 10155 diff changeset	689 F77_CHAR_ARG_LEN (1)));
11586 12df7854fa7c strip trailing whitespace from source files John W. Eaton <jwe@octave.org> parents: 11570 diff changeset	690 }
3185 9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	691
9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	692 }
10311 a217e1d74353 untabify qz.cc John W. Eaton <jwe@octave.org> parents: 10307 diff changeset	693 else
3185 9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	694 {
9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	695 #ifdef DEBUG
3538 0ff7323dab8b [project @ 2000-02-02 12:36:25 by jwe] jwe parents: 3531 diff changeset	696 std::cout << "qz: peforming qr decomposition of bb" << std::endl;
3185 9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	697 #endif
3183 5edc539c2f80 [project @ 1998-09-25 03:37:22 by jwe] jwe parents: diff changeset	698
10311 a217e1d74353 untabify qz.cc John W. Eaton <jwe@octave.org> parents: 10307 diff changeset	699 // Compute the QR factorization of bb.
3185 9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	700 QR bqr (bb);
9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	701
9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	702 #ifdef DEBUG
17787 175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	703 std::cout << "qz: qr (bb) done; now peforming qz decomposition"
175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	704 << std::endl;
3185 9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	705 #endif
3183 5edc539c2f80 [project @ 1998-09-25 03:37:22 by jwe] jwe parents: diff changeset	706
3185 9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	707 bb = bqr.R ();
9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	708
9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	709 #ifdef DEBUG
3538 0ff7323dab8b [project @ 2000-02-02 12:36:25 by jwe] jwe parents: 3531 diff changeset	710 std::cout << "qz: extracted bb" << std::endl;
3185 9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	711 #endif
3183 5edc539c2f80 [project @ 1998-09-25 03:37:22 by jwe] jwe parents: diff changeset	712
10311 a217e1d74353 untabify qz.cc John W. Eaton <jwe@octave.org> parents: 10307 diff changeset	713 aa = (bqr.Q ()).transpose () * aa;
3185 9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	714
9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	715 #ifdef DEBUG
3538 0ff7323dab8b [project @ 2000-02-02 12:36:25 by jwe] jwe parents: 3531 diff changeset	716 std::cout << "qz: updated aa " << std::endl;
0ff7323dab8b [project @ 2000-02-02 12:36:25 by jwe] jwe parents: 3531 diff changeset	717 std::cout << "bqr.Q () = " << std::endl << bqr.Q () << std::endl;
3183 5edc539c2f80 [project @ 1998-09-25 03:37:22 by jwe] jwe parents: diff changeset	718
3185 9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	719 if (compq == 'V')
10154 40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	720 std::cout << "QQ =" << QQ << std::endl;
3185 9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	721 #endif
3183 5edc539c2f80 [project @ 1998-09-25 03:37:22 by jwe] jwe parents: diff changeset	722
3185 9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	723 if (compq == 'V')
10311 a217e1d74353 untabify qz.cc John W. Eaton <jwe@octave.org> parents: 10307 diff changeset	724 QQ = QQ * bqr.Q ();
3183 5edc539c2f80 [project @ 1998-09-25 03:37:22 by jwe] jwe parents: diff changeset	725
3185 9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	726 #ifdef DEBUG
3538 0ff7323dab8b [project @ 2000-02-02 12:36:25 by jwe] jwe parents: 3531 diff changeset	727 std::cout << "qz: precursors done..." << std::endl;
3185 9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	728 #endif
3183 5edc539c2f80 [project @ 1998-09-25 03:37:22 by jwe] jwe parents: diff changeset	729
3185 9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	730 #ifdef DEBUG
17787 175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	731 std::cout << "qz: compq = " << compq << ", compz = " << compz
175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	732 << std::endl;
3185 9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	733 #endif
3183 5edc539c2f80 [project @ 1998-09-25 03:37:22 by jwe] jwe parents: diff changeset	734
10311 a217e1d74353 untabify qz.cc John W. Eaton <jwe@octave.org> parents: 10307 diff changeset	735 // Reduce to generalized hessenberg form.
3185 9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	736 F77_XFCN (dgghrd, DGGHRD,
10154 40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	737 (F77_CONST_CHAR_ARG2 (&compq, 1),
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	738 F77_CONST_CHAR_ARG2 (&compz, 1),
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	739 nn, ilo, ihi, aa.fortran_vec (),
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	740 nn, bb.fortran_vec (), nn, QQ.fortran_vec (), nn,
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	741 ZZ.fortran_vec (), nn, info
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	742 F77_CHAR_ARG_LEN (1)
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	743 F77_CHAR_ARG_LEN (1)));
3183 5edc539c2f80 [project @ 1998-09-25 03:37:22 by jwe] jwe parents: diff changeset	744
10311 a217e1d74353 untabify qz.cc John W. Eaton <jwe@octave.org> parents: 10307 diff changeset	745 // Check if just computing generalized eigenvalues or if we're
a217e1d74353 untabify qz.cc John W. Eaton <jwe@octave.org> parents: 10307 diff changeset	746 // actually computing the decomposition.
3183 5edc539c2f80 [project @ 1998-09-25 03:37:22 by jwe] jwe parents: diff changeset	747
10311 a217e1d74353 untabify qz.cc John W. Eaton <jwe@octave.org> parents: 10307 diff changeset	748 // Reduce to generalized Schur form.
3185 9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	749 F77_XFCN (dhgeqz, DHGEQZ,
10154 40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	750 (F77_CONST_CHAR_ARG2 (&qz_job, 1),
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	751 F77_CONST_CHAR_ARG2 (&compq, 1),
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	752 F77_CONST_CHAR_ARG2 (&compz, 1),
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	753 nn, ilo, ihi, aa.fortran_vec (), nn, bb.fortran_vec (),
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	754 nn, alphar.fortran_vec (), alphai.fortran_vec (),
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	755 betar.fortran_vec (), QQ.fortran_vec (), nn,
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	756 ZZ.fortran_vec (), nn, work.fortran_vec (), nn, info
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	757 F77_CHAR_ARG_LEN (1)
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	758 F77_CHAR_ARG_LEN (1)
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	759 F77_CHAR_ARG_LEN (1)));
10311 a217e1d74353 untabify qz.cc John W. Eaton <jwe@octave.org> parents: 10307 diff changeset	760
10307 4e4270ab70d6 support complex case in qz Jyh-miin Lin <jyhmiinlin@gmail.com> parents: 10155 diff changeset	761 if (compq == 'V')
10311 a217e1d74353 untabify qz.cc John W. Eaton <jwe@octave.org> parents: 10307 diff changeset	762 {
a217e1d74353 untabify qz.cc John W. Eaton <jwe@octave.org> parents: 10307 diff changeset	763 F77_XFCN (dggbak, DGGBAK,
a217e1d74353 untabify qz.cc John W. Eaton <jwe@octave.org> parents: 10307 diff changeset	764 (F77_CONST_CHAR_ARG2 (&bal_job, 1),
a217e1d74353 untabify qz.cc John W. Eaton <jwe@octave.org> parents: 10307 diff changeset	765 F77_CONST_CHAR_ARG2 ("L", 1),
a217e1d74353 untabify qz.cc John W. Eaton <jwe@octave.org> parents: 10307 diff changeset	766 nn, ilo, ihi, lscale.data (), rscale.data (),
a217e1d74353 untabify qz.cc John W. Eaton <jwe@octave.org> parents: 10307 diff changeset	767 nn, QQ.fortran_vec (), nn, info
a217e1d74353 untabify qz.cc John W. Eaton <jwe@octave.org> parents: 10307 diff changeset	768 F77_CHAR_ARG_LEN (1)
a217e1d74353 untabify qz.cc John W. Eaton <jwe@octave.org> parents: 10307 diff changeset	769 F77_CHAR_ARG_LEN (1)));
10307 4e4270ab70d6 support complex case in qz Jyh-miin Lin <jyhmiinlin@gmail.com> parents: 10155 diff changeset	770
4e4270ab70d6 support complex case in qz Jyh-miin Lin <jyhmiinlin@gmail.com> parents: 10155 diff changeset	771 #ifdef DEBUG
10311 a217e1d74353 untabify qz.cc John W. Eaton <jwe@octave.org> parents: 10307 diff changeset	772 if (compq == 'V')
17787 175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	773 std::cout << "qz: balancing done; QQ=" << std::endl
175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	774 << QQ << std::endl;
10307 4e4270ab70d6 support complex case in qz Jyh-miin Lin <jyhmiinlin@gmail.com> parents: 10155 diff changeset	775 #endif
4e4270ab70d6 support complex case in qz Jyh-miin Lin <jyhmiinlin@gmail.com> parents: 10155 diff changeset	776 }
4e4270ab70d6 support complex case in qz Jyh-miin Lin <jyhmiinlin@gmail.com> parents: 10155 diff changeset	777
17787 175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	778 // then right
10307 4e4270ab70d6 support complex case in qz Jyh-miin Lin <jyhmiinlin@gmail.com> parents: 10155 diff changeset	779 if (compz == 'V')
4e4270ab70d6 support complex case in qz Jyh-miin Lin <jyhmiinlin@gmail.com> parents: 10155 diff changeset	780 {
17787 175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	781 F77_XFCN (dggbak, DGGBAK,
175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	782 (F77_CONST_CHAR_ARG2 (&bal_job, 1),
175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	783 F77_CONST_CHAR_ARG2 ("R", 1),
175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	784 nn, ilo, ihi, lscale.data (), rscale.data (),
175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	785 nn, ZZ.fortran_vec (), nn, info
175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	786 F77_CHAR_ARG_LEN (1)
175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	787 F77_CHAR_ARG_LEN (1)));
10307 4e4270ab70d6 support complex case in qz Jyh-miin Lin <jyhmiinlin@gmail.com> parents: 10155 diff changeset	788
4e4270ab70d6 support complex case in qz Jyh-miin Lin <jyhmiinlin@gmail.com> parents: 10155 diff changeset	789 #ifdef DEBUG
17787 175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	790 if (compz == 'V')
175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	791 std::cout << "qz: balancing done; ZZ=" << std::endl
175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	792 << ZZ << std::endl;
10307 4e4270ab70d6 support complex case in qz Jyh-miin Lin <jyhmiinlin@gmail.com> parents: 10155 diff changeset	793 #endif
4e4270ab70d6 support complex case in qz Jyh-miin Lin <jyhmiinlin@gmail.com> parents: 10155 diff changeset	794 }
4e4270ab70d6 support complex case in qz Jyh-miin Lin <jyhmiinlin@gmail.com> parents: 10155 diff changeset	795
3185 9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	796 }
3183 5edc539c2f80 [project @ 1998-09-25 03:37:22 by jwe] jwe parents: diff changeset	797
10311 a217e1d74353 untabify qz.cc John W. Eaton <jwe@octave.org> parents: 10307 diff changeset	798 // Order the QZ decomposition?
8927 d75f4ee0538d qz.cc (Fqz): avoid maybe clobbred by vfork warning from GCC John W. Eaton <jwe@octave.org> parents: 8920 diff changeset	799 if (! (ord_job == 'N' \|\| ord_job == 'n'))
3183 5edc539c2f80 [project @ 1998-09-25 03:37:22 by jwe] jwe parents: diff changeset	800 {
3185 9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	801 if (complex_case)
10154 40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	802 {
10311 a217e1d74353 untabify qz.cc John W. Eaton <jwe@octave.org> parents: 10307 diff changeset	803 // Probably not needed, but better be safe.
11553 01f703952eff Improve docstrings for functions in DLD-FUNCTIONS directory. Rik <octave@nomad.inbox5.com> parents: 11523 diff changeset	804 error ("qz: cannot re-order complex qz decomposition");
10154 40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	805 return retval;
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	806 }
3185 9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	807 else
10154 40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	808 {
3185 9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	809 #ifdef DEBUG_SORT
10154 40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	810 std::cout << "qz: ordering eigenvalues: ord_job = "
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	811 << ord_job << std::endl;
3185 9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	812 #endif
3183 5edc539c2f80 [project @ 1998-09-25 03:37:22 by jwe] jwe parents: diff changeset	813
10311 a217e1d74353 untabify qz.cc John W. Eaton <jwe@octave.org> parents: 10307 diff changeset	814 // Declared static to avoid vfork/long jump compiler complaints.
10154 40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	815 static sort_function sort_test;
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	816 sort_test = 0;
3183 5edc539c2f80 [project @ 1998-09-25 03:37:22 by jwe] jwe parents: diff changeset	817
10154 40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	818 switch (ord_job)
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	819 {
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	820 case 'S':
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	821 case 's':
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	822 sort_test = &fin;
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	823 break;
3183 5edc539c2f80 [project @ 1998-09-25 03:37:22 by jwe] jwe parents: diff changeset	824
10154 40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	825 case 'B':
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	826 case 'b':
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	827 sort_test = &fout;
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	828 break;
3183 5edc539c2f80 [project @ 1998-09-25 03:37:22 by jwe] jwe parents: diff changeset	829
10154 40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	830 case '+':
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	831 sort_test = &fcrhp;
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	832 break;
3183 5edc539c2f80 [project @ 1998-09-25 03:37:22 by jwe] jwe parents: diff changeset	833
10154 40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	834 case '-':
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	835 sort_test = &folhp;
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	836 break;
3185 9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	837
10154 40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	838 default:
10311 a217e1d74353 untabify qz.cc John W. Eaton <jwe@octave.org> parents: 10307 diff changeset	839 // Invalid order option (should never happen, since we
10154 40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	840 // checked the options at the top).
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	841 panic_impossible ();
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	842 break;
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	843 }
3183 5edc539c2f80 [project @ 1998-09-25 03:37:22 by jwe] jwe parents: diff changeset	844
10154 40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	845 octave_idx_type ndim, fail;
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	846 double inf_norm;
3185 9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	847
10154 40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	848 F77_XFCN (xdlange, XDLANGE,
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	849 (F77_CONST_CHAR_ARG2 ("I", 1),
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	850 nn, nn, aa.data (), nn, work.fortran_vec (), inf_norm
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	851 F77_CHAR_ARG_LEN (1)));
3185 9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	852
15220 61822c866ba1 use std::numeric_limits<T>::epsilon in C++ code John W. Eaton <jwe@octave.org> parents: 15195 diff changeset	853 double eps = std::numeric_limits<double>::epsilon () * inf_norm * nn;
3185 9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	854
9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	855 #ifdef DEBUG_SORT
10154 40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	856 std::cout << "qz: calling dsubsp: aa=" << std::endl;
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	857 octave_print_internal (std::cout, aa, 0);
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	858 std::cout << std::endl << "bb=" << std::endl;
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	859 octave_print_internal (std::cout, bb, 0);
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	860 if (compz == 'V')
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	861 {
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	862 std::cout << std::endl << "ZZ=" << std::endl;
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	863 octave_print_internal (std::cout, ZZ, 0);
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	864 }
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	865 std::cout << std::endl;
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	866 std::cout << "alphar = " << std::endl;
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	867 octave_print_internal (std::cout, (Matrix) alphar, 0);
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	868 std::cout << std::endl << "alphai = " << std::endl;
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	869 octave_print_internal (std::cout, (Matrix) alphai, 0);
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	870 std::cout << std::endl << "beta = " << std::endl;
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	871 octave_print_internal (std::cout, (Matrix) betar, 0);
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	872 std::cout << std::endl;
3185 9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	873 #endif
9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	874
11570 57632dea2446 attempt better backward compatibility for Array constructors John W. Eaton <jwe@octave.org> parents: 11553 diff changeset	875 Array<octave_idx_type> ind (dim_vector (nn, 1));
3550 bc492f4a94cb [project @ 2000-02-03 01:36:30 by jwe] jwe parents: 3538 diff changeset	876
10154 40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	877 F77_XFCN (dsubsp, DSUBSP,
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	878 (nn, nn, aa.fortran_vec (), bb.fortran_vec (),
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	879 ZZ.fortran_vec (), sort_test, eps, ndim, fail,
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	880 ind.fortran_vec ()));
3185 9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	881
9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	882 #ifdef DEBUG
10154 40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	883 std::cout << "qz: back from dsubsp: aa=" << std::endl;
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	884 octave_print_internal (std::cout, aa, 0);
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	885 std::cout << std::endl << "bb=" << std::endl;
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	886 octave_print_internal (std::cout, bb, 0);
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	887 if (compz == 'V')
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	888 {
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	889 std::cout << std::endl << "ZZ=" << std::endl;
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	890 octave_print_internal (std::cout, ZZ, 0);
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	891 }
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	892 std::cout << std::endl;
3185 9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	893 #endif
9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	894
10311 a217e1d74353 untabify qz.cc John W. Eaton <jwe@octave.org> parents: 10307 diff changeset	895 // Manually update alphar, alphai, betar.
10154 40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	896 static int jj;
3185 9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	897
10311 a217e1d74353 untabify qz.cc John W. Eaton <jwe@octave.org> parents: 10307 diff changeset	898 jj = 0;
10154 40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	899 while (jj < nn)
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	900 {
3185 9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	901 #ifdef DEBUG_EIG
10154 40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	902 std::cout << "computing gen eig #" << jj << std::endl;
3185 9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	903 #endif
9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	904
10311 a217e1d74353 untabify qz.cc John W. Eaton <jwe@octave.org> parents: 10307 diff changeset	905 // Number of zeros in this block.
a217e1d74353 untabify qz.cc John W. Eaton <jwe@octave.org> parents: 10307 diff changeset	906 static int zcnt;
3185 9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	907
10154 40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	908 if (jj == (nn-1))
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	909 zcnt = 1;
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	910 else if (aa(jj+1,jj) == 0)
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	911 zcnt = 1;
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	912 else zcnt = 2;
3185 9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	913
10311 a217e1d74353 untabify qz.cc John W. Eaton <jwe@octave.org> parents: 10307 diff changeset	914 if (zcnt == 1)
10154 40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	915 {
10311 a217e1d74353 untabify qz.cc John W. Eaton <jwe@octave.org> parents: 10307 diff changeset	916 // Real zero.
3185 9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	917 #ifdef DEBUG_EIG
10154 40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	918 std::cout << " single gen eig:" << std::endl;
17787 175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	919 std::cout << " alphar(" << jj << ") = " << aa(jj,jj)
175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	920 << std::endl;
18712 6113e0c6920b maint: Clean up extra spaces before/after parentheses. Rik <rik@octave.org> parents: 17787 diff changeset	921 std::cout << " betar(" << jj << ") = " << bb(jj,jj)
17787 175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	922 << std::endl;
10154 40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	923 std::cout << " alphai(" << jj << ") = 0" << std::endl;
3185 9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	924 #endif
9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	925
10154 40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	926 alphar(jj) = aa(jj,jj);
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	927 alphai(jj) = 0;
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	928 betar(jj) = bb(jj,jj);
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	929 }
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	930 else
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	931 {
10311 a217e1d74353 untabify qz.cc John W. Eaton <jwe@octave.org> parents: 10307 diff changeset	932 // Complex conjugate pair.
3185 9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	933 #ifdef DEBUG_EIG
10154 40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	934 std::cout << "qz: calling dlag2:" << std::endl;
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	935 std::cout << "safmin="
17787 175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	936 << setiosflags (std::ios::scientific)
175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	937 << safmin << std::endl;
3185 9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	938
10154 40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	939 for (int idr = jj; idr <= jj+1; idr++)
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	940 {
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	941 for (int idc = jj; idc <= jj+1; idc++)
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	942 {
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	943 std::cout << "aa(" << idr << "," << idc << ")="
17787 175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	944 << aa(idr,idc) << std::endl;
10154 40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	945 std::cout << "bb(" << idr << "," << idc << ")="
17787 175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	946 << bb(idr,idc) << std::endl;
10154 40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	947 }
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	948 }
3185 9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	949 #endif
9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	950
17787 175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	951 // FIXME: probably should be using
10154 40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	952 // fortran_vec instead of &aa(jj,jj) here.
4566 30ba814d6700 [project @ 2003-10-29 15:06:29 by jwe] jwe parents: 4552 diff changeset	953
10154 40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	954 double scale1, scale2, wr1, wr2, wi;
10311 a217e1d74353 untabify qz.cc John W. Eaton <jwe@octave.org> parents: 10307 diff changeset	955 const double aa_ptr = aa.data () + jj nn + jj;
a217e1d74353 untabify qz.cc John W. Eaton <jwe@octave.org> parents: 10307 diff changeset	956 const double bb_ptr = bb.data () + jj nn + jj;
10154 40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	957 F77_XFCN (dlag2, DLAG2,
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	958 (aa_ptr, nn, bb_ptr, nn, safmin,
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	959 scale1, scale2, wr1, wr2, wi));
3185 9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	960
9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	961 #ifdef DEBUG_EIG
10154 40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	962 std::cout << "dlag2 returns: scale1=" << scale1
17787 175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	963 << "\tscale2=" << scale2 << std::endl
175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	964 << "\twr1=" << wr1 << "\twr2=" << wr2
175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	965 << "\twi=" << wi << std::endl;
3185 9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	966 #endif
9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	967
10311 a217e1d74353 untabify qz.cc John W. Eaton <jwe@octave.org> parents: 10307 diff changeset	968 // Just to be safe, check if it's a real pair.
10154 40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	969 if (wi == 0)
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	970 {
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	971 alphar(jj) = wr1;
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	972 alphai(jj) = 0;
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	973 betar(jj) = scale1;
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	974 alphar(jj+1) = wr2;
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	975 alphai(jj+1) = 0;
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	976 betar(jj+1) = scale2;
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	977 }
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	978 else
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	979 {
10311 a217e1d74353 untabify qz.cc John W. Eaton <jwe@octave.org> parents: 10307 diff changeset	980 alphar(jj) = alphar(jj+1) = wr1;
10154 40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	981 alphai(jj) = -(alphai(jj+1) = wi);
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	982 betar(jj) = betar(jj+1) = scale1;
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	983 }
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	984 }
3185 9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	985
10311 a217e1d74353 untabify qz.cc John W. Eaton <jwe@octave.org> parents: 10307 diff changeset	986 // Advance past this block.
10154 40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	987 jj += zcnt;
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	988 }
3185 9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	989
9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	990 #ifdef DEBUG_SORT
10154 40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	991 std::cout << "qz: back from dsubsp: aa=" << std::endl;
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	992 octave_print_internal (std::cout, aa, 0);
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	993 std::cout << std::endl << "bb=" << std::endl;
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	994 octave_print_internal (std::cout, bb, 0);
3185 9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	995
10154 40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	996 if (compz == 'V')
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	997 {
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	998 std::cout << std::endl << "ZZ=" << std::endl;
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	999 octave_print_internal (std::cout, ZZ, 0);
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	1000 }
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	1001 std::cout << std::endl << "qz: ndim=" << ndim << std::endl
17787 175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	1002 << "fail=" << fail << std::endl;
10154 40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	1003 std::cout << "alphar = " << std::endl;
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	1004 octave_print_internal (std::cout, (Matrix) alphar, 0);
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	1005 std::cout << std::endl << "alphai = " << std::endl;
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	1006 octave_print_internal (std::cout, (Matrix) alphai, 0);
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	1007 std::cout << std::endl << "beta = " << std::endl;
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	1008 octave_print_internal (std::cout, (Matrix) betar, 0);
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	1009 std::cout << std::endl;
3185 9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	1010 #endif
10154 40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	1011 }
3183 5edc539c2f80 [project @ 1998-09-25 03:37:22 by jwe] jwe parents: diff changeset	1012 }
3185 9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	1013
10311 a217e1d74353 untabify qz.cc John W. Eaton <jwe@octave.org> parents: 10307 diff changeset	1014 // Compute generalized eigenvalues?
3183 5edc539c2f80 [project @ 1998-09-25 03:37:22 by jwe] jwe parents: diff changeset	1015 ComplexColumnVector gev;
3185 9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	1016
9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	1017 if (nargout < 2 \|\| nargout == 7 \|\| (nargin == 3 && nargout == 4))
3183 5edc539c2f80 [project @ 1998-09-25 03:37:22 by jwe] jwe parents: diff changeset	1018 {
3185 9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	1019 if (complex_case)
10154 40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	1020 {
10311 a217e1d74353 untabify qz.cc John W. Eaton <jwe@octave.org> parents: 10307 diff changeset	1021 int cnt = 0;
10307 4e4270ab70d6 support complex case in qz Jyh-miin Lin <jyhmiinlin@gmail.com> parents: 10155 diff changeset	1022
10311 a217e1d74353 untabify qz.cc John W. Eaton <jwe@octave.org> parents: 10307 diff changeset	1023 for (int ii = 0; ii < nn; ii++)
a217e1d74353 untabify qz.cc John W. Eaton <jwe@octave.org> parents: 10307 diff changeset	1024 cnt++;
10307 4e4270ab70d6 support complex case in qz Jyh-miin Lin <jyhmiinlin@gmail.com> parents: 10155 diff changeset	1025
10311 a217e1d74353 untabify qz.cc John W. Eaton <jwe@octave.org> parents: 10307 diff changeset	1026 ComplexColumnVector tmp (cnt);
10307 4e4270ab70d6 support complex case in qz Jyh-miin Lin <jyhmiinlin@gmail.com> parents: 10155 diff changeset	1027
10311 a217e1d74353 untabify qz.cc John W. Eaton <jwe@octave.org> parents: 10307 diff changeset	1028 cnt = 0;
a217e1d74353 untabify qz.cc John W. Eaton <jwe@octave.org> parents: 10307 diff changeset	1029 for (int ii = 0; ii < nn; ii++)
a217e1d74353 untabify qz.cc John W. Eaton <jwe@octave.org> parents: 10307 diff changeset	1030 tmp(cnt++) = xalpha(ii) / xbeta(ii);
a217e1d74353 untabify qz.cc John W. Eaton <jwe@octave.org> parents: 10307 diff changeset	1031
a217e1d74353 untabify qz.cc John W. Eaton <jwe@octave.org> parents: 10307 diff changeset	1032 gev = tmp;
10154 40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	1033 }
3185 9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	1034 else
10154 40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	1035 {
3185 9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	1036 #ifdef DEBUG
10154 40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	1037 std::cout << "qz: computing generalized eigenvalues" << std::endl;
3185 9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	1038 #endif
3183 5edc539c2f80 [project @ 1998-09-25 03:37:22 by jwe] jwe parents: diff changeset	1039
10311 a217e1d74353 untabify qz.cc John W. Eaton <jwe@octave.org> parents: 10307 diff changeset	1040 // Return finite generalized eigenvalues.
10154 40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	1041 int cnt = 0;
3185 9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	1042
10154 40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	1043 for (int ii = 0; ii < nn; ii++)
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	1044 if (betar(ii) != 0)
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	1045 cnt++;
3185 9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	1046
10311 a217e1d74353 untabify qz.cc John W. Eaton <jwe@octave.org> parents: 10307 diff changeset	1047 ComplexColumnVector tmp (cnt);
3185 9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	1048
10154 40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	1049 cnt = 0;
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	1050 for (int ii = 0; ii < nn; ii++)
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	1051 if (betar(ii) != 0)
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	1052 tmp(cnt++) = Complex(alphar(ii), alphai(ii))/betar(ii);
10311 a217e1d74353 untabify qz.cc John W. Eaton <jwe@octave.org> parents: 10307 diff changeset	1053
10154 40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	1054 gev = tmp;
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	1055 }
3183 5edc539c2f80 [project @ 1998-09-25 03:37:22 by jwe] jwe parents: diff changeset	1056 }
5edc539c2f80 [project @ 1998-09-25 03:37:22 by jwe] jwe parents: diff changeset	1057
10311 a217e1d74353 untabify qz.cc John W. Eaton <jwe@octave.org> parents: 10307 diff changeset	1058 // Right, left eigenvector matrices.
3185 9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	1059 if (nargout >= 5)
3183 5edc539c2f80 [project @ 1998-09-25 03:37:22 by jwe] jwe parents: diff changeset	1060 {
10311 a217e1d74353 untabify qz.cc John W. Eaton <jwe@octave.org> parents: 10307 diff changeset	1061 // Which side to compute?
a217e1d74353 untabify qz.cc John W. Eaton <jwe@octave.org> parents: 10307 diff changeset	1062 char side = (nargout == 5 ? 'R' : 'B');
a217e1d74353 untabify qz.cc John W. Eaton <jwe@octave.org> parents: 10307 diff changeset	1063 // Compute all of them and backtransform
a217e1d74353 untabify qz.cc John W. Eaton <jwe@octave.org> parents: 10307 diff changeset	1064 char howmny = 'B';
a217e1d74353 untabify qz.cc John W. Eaton <jwe@octave.org> parents: 10307 diff changeset	1065 // Dummy pointer; select is not used.
a217e1d74353 untabify qz.cc John W. Eaton <jwe@octave.org> parents: 10307 diff changeset	1066 octave_idx_type *select = 0;
3185 9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	1067
9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	1068 if (complex_case)
10154 40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	1069 {
10311 a217e1d74353 untabify qz.cc John W. Eaton <jwe@octave.org> parents: 10307 diff changeset	1070 CVL = CQ;
a217e1d74353 untabify qz.cc John W. Eaton <jwe@octave.org> parents: 10307 diff changeset	1071 CVR = CZ;
a217e1d74353 untabify qz.cc John W. Eaton <jwe@octave.org> parents: 10307 diff changeset	1072 ComplexRowVector cwork2 (2 * nn);
a217e1d74353 untabify qz.cc John W. Eaton <jwe@octave.org> parents: 10307 diff changeset	1073 RowVector rwork2 (8 * nn);
10307 4e4270ab70d6 support complex case in qz Jyh-miin Lin <jyhmiinlin@gmail.com> parents: 10155 diff changeset	1074 octave_idx_type m;
4e4270ab70d6 support complex case in qz Jyh-miin Lin <jyhmiinlin@gmail.com> parents: 10155 diff changeset	1075
10311 a217e1d74353 untabify qz.cc John W. Eaton <jwe@octave.org> parents: 10307 diff changeset	1076 F77_XFCN (ztgevc, ZTGEVC,
a217e1d74353 untabify qz.cc John W. Eaton <jwe@octave.org> parents: 10307 diff changeset	1077 (F77_CONST_CHAR_ARG2 (&side, 1),
a217e1d74353 untabify qz.cc John W. Eaton <jwe@octave.org> parents: 10307 diff changeset	1078 F77_CONST_CHAR_ARG2 (&howmny, 1),
a217e1d74353 untabify qz.cc John W. Eaton <jwe@octave.org> parents: 10307 diff changeset	1079 select, nn, caa.fortran_vec (), nn, cbb.fortran_vec (),
a217e1d74353 untabify qz.cc John W. Eaton <jwe@octave.org> parents: 10307 diff changeset	1080 nn, CVL.fortran_vec (), nn, CVR.fortran_vec (), nn, nn,
a217e1d74353 untabify qz.cc John W. Eaton <jwe@octave.org> parents: 10307 diff changeset	1081 m, cwork2.fortran_vec (), rwork2.fortran_vec (), info
a217e1d74353 untabify qz.cc John W. Eaton <jwe@octave.org> parents: 10307 diff changeset	1082 F77_CHAR_ARG_LEN (1)
11586 12df7854fa7c strip trailing whitespace from source files John W. Eaton <jwe@octave.org> parents: 11570 diff changeset	1083 F77_CHAR_ARG_LEN (1)));
10154 40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	1084 }
3185 9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	1085 else
10154 40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	1086 {
3185 9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	1087 #ifdef DEBUG
10154 40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	1088 std::cout << "qz: computing generalized eigenvectors" << std::endl;
3185 9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	1089 #endif
9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	1090
10154 40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	1091 VL = QQ;
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	1092 VR = ZZ;
10311 a217e1d74353 untabify qz.cc John W. Eaton <jwe@octave.org> parents: 10307 diff changeset	1093 octave_idx_type m;
a217e1d74353 untabify qz.cc John W. Eaton <jwe@octave.org> parents: 10307 diff changeset	1094
10154 40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	1095 F77_XFCN (dtgevc, DTGEVC,
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	1096 (F77_CONST_CHAR_ARG2 (&side, 1),
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	1097 F77_CONST_CHAR_ARG2 (&howmny, 1),
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	1098 select, nn, aa.fortran_vec (), nn, bb.fortran_vec (),
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	1099 nn, VL.fortran_vec (), nn, VR.fortran_vec (), nn, nn,
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	1100 m, work.fortran_vec (), info
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	1101 F77_CHAR_ARG_LEN (1)
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	1102 F77_CHAR_ARG_LEN (1)));
3185 9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	1103
10311 a217e1d74353 untabify qz.cc John W. Eaton <jwe@octave.org> parents: 10307 diff changeset	1104 // Now construct the complex form of VV, WW.
10154 40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	1105 int jj = 0;
3185 9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	1106
10154 40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	1107 while (jj < nn)
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	1108 {
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	1109 OCTAVE_QUIT;
4153 6b96ce9f5743 [project @ 2002-11-06 20:38:49 by jwe] jwe parents: 4051 diff changeset	1110
10311 a217e1d74353 untabify qz.cc John W. Eaton <jwe@octave.org> parents: 10307 diff changeset	1111 // See if real or complex eigenvalue.
a217e1d74353 untabify qz.cc John W. Eaton <jwe@octave.org> parents: 10307 diff changeset	1112
a217e1d74353 untabify qz.cc John W. Eaton <jwe@octave.org> parents: 10307 diff changeset	1113 // Column increment; assume complex eigenvalue.
a217e1d74353 untabify qz.cc John W. Eaton <jwe@octave.org> parents: 10307 diff changeset	1114 int cinc = 2;
3185 9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	1115
10154 40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	1116 if (jj == (nn-1))
10311 a217e1d74353 untabify qz.cc John W. Eaton <jwe@octave.org> parents: 10307 diff changeset	1117 // Single column.
a217e1d74353 untabify qz.cc John W. Eaton <jwe@octave.org> parents: 10307 diff changeset	1118 cinc = 1;
10154 40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	1119 else if (aa(jj+1,jj) == 0)
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	1120 cinc = 1;
3185 9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	1121
10311 a217e1d74353 untabify qz.cc John W. Eaton <jwe@octave.org> parents: 10307 diff changeset	1122 // Now copy the eigenvector (s) to CVR, CVL.
10154 40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	1123 if (cinc == 1)
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	1124 {
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	1125 for (int ii = 0; ii < nn; ii++)
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	1126 CVR(ii,jj) = VR(ii,jj);
3185 9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	1127
10154 40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	1128 if (side == 'B')
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	1129 for (int ii = 0; ii < nn; ii++)
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	1130 CVL(ii,jj) = VL(ii,jj);
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	1131 }
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	1132 else
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	1133 {
10311 a217e1d74353 untabify qz.cc John W. Eaton <jwe@octave.org> parents: 10307 diff changeset	1134 // Double column; complex vector.
3185 9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	1135
10154 40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	1136 for (int ii = 0; ii < nn; ii++)
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	1137 {
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	1138 CVR(ii,jj) = Complex (VR(ii,jj), VR(ii,jj+1));
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	1139 CVR(ii,jj+1) = Complex (VR(ii,jj), -VR(ii,jj+1));
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	1140 }
3183 5edc539c2f80 [project @ 1998-09-25 03:37:22 by jwe] jwe parents: diff changeset	1141
10154 40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	1142 if (side == 'B')
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	1143 for (int ii = 0; ii < nn; ii++)
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	1144 {
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	1145 CVL(ii,jj) = Complex (VL(ii,jj), VL(ii,jj+1));
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	1146 CVL(ii,jj+1) = Complex (VL(ii,jj), -VL(ii,jj+1));
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	1147 }
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	1148 }
3185 9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	1149
10311 a217e1d74353 untabify qz.cc John W. Eaton <jwe@octave.org> parents: 10307 diff changeset	1150 // Advance to next eigenvectors (if any).
10154 40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	1151 jj += cinc;
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	1152 }
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	1153 }
3183 5edc539c2f80 [project @ 1998-09-25 03:37:22 by jwe] jwe parents: diff changeset	1154 }
3185 9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	1155
9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	1156 switch (nargout)
9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	1157 {
9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	1158 case 7:
9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	1159 retval(6) = gev;
9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	1160
10311 a217e1d74353 untabify qz.cc John W. Eaton <jwe@octave.org> parents: 10307 diff changeset	1161 case 6:
a217e1d74353 untabify qz.cc John W. Eaton <jwe@octave.org> parents: 10307 diff changeset	1162 // Return eigenvectors.
3185 9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	1163 retval(5) = CVL;
9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	1164
10311 a217e1d74353 untabify qz.cc John W. Eaton <jwe@octave.org> parents: 10307 diff changeset	1165 case 5:
a217e1d74353 untabify qz.cc John W. Eaton <jwe@octave.org> parents: 10307 diff changeset	1166 // Return eigenvectors.
3185 9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	1167 retval(4) = CVR;
9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	1168
9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	1169 case 4:
9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	1170 if (nargin == 3)
10154 40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	1171 {
3185 9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	1172 #ifdef DEBUG
10154 40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	1173 std::cout << "qz: sort: retval(3) = gev = " << std::endl;
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	1174 octave_print_internal (std::cout, gev);
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	1175 std::cout << std::endl;
3185 9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	1176 #endif
10154 40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	1177 retval(3) = gev;
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	1178 }
3185 9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	1179 else
10311 a217e1d74353 untabify qz.cc John W. Eaton <jwe@octave.org> parents: 10307 diff changeset	1180 {
a217e1d74353 untabify qz.cc John W. Eaton <jwe@octave.org> parents: 10307 diff changeset	1181 if (complex_case)
a217e1d74353 untabify qz.cc John W. Eaton <jwe@octave.org> parents: 10307 diff changeset	1182 retval(3) = CZ;
a217e1d74353 untabify qz.cc John W. Eaton <jwe@octave.org> parents: 10307 diff changeset	1183 else
a217e1d74353 untabify qz.cc John W. Eaton <jwe@octave.org> parents: 10307 diff changeset	1184 retval(3) = ZZ;
a217e1d74353 untabify qz.cc John W. Eaton <jwe@octave.org> parents: 10307 diff changeset	1185 }
3185 9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	1186
9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	1187 case 3:
9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	1188 if (nargin == 3)
14876 54a386f2ac4e correcly compute Z for 3-output call to qz (bug #36728) John W. Eaton <jwe@octave.org> parents: 14844 diff changeset	1189 {
54a386f2ac4e correcly compute Z for 3-output call to qz (bug #36728) John W. Eaton <jwe@octave.org> parents: 14844 diff changeset	1190 if (complex_case)
54a386f2ac4e correcly compute Z for 3-output call to qz (bug #36728) John W. Eaton <jwe@octave.org> parents: 14844 diff changeset	1191 retval(2) = CZ;
54a386f2ac4e correcly compute Z for 3-output call to qz (bug #36728) John W. Eaton <jwe@octave.org> parents: 14844 diff changeset	1192 else
54a386f2ac4e correcly compute Z for 3-output call to qz (bug #36728) John W. Eaton <jwe@octave.org> parents: 14844 diff changeset	1193 retval(2) = ZZ;
54a386f2ac4e correcly compute Z for 3-output call to qz (bug #36728) John W. Eaton <jwe@octave.org> parents: 14844 diff changeset	1194 }
3185 9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	1195 else
10311 a217e1d74353 untabify qz.cc John W. Eaton <jwe@octave.org> parents: 10307 diff changeset	1196 {
a217e1d74353 untabify qz.cc John W. Eaton <jwe@octave.org> parents: 10307 diff changeset	1197 if (complex_case)
a217e1d74353 untabify qz.cc John W. Eaton <jwe@octave.org> parents: 10307 diff changeset	1198 retval(2) = CQ.hermitian ();
a217e1d74353 untabify qz.cc John W. Eaton <jwe@octave.org> parents: 10307 diff changeset	1199 else
a217e1d74353 untabify qz.cc John W. Eaton <jwe@octave.org> parents: 10307 diff changeset	1200 retval(2) = QQ.transpose ();
a217e1d74353 untabify qz.cc John W. Eaton <jwe@octave.org> parents: 10307 diff changeset	1201 }
a217e1d74353 untabify qz.cc John W. Eaton <jwe@octave.org> parents: 10307 diff changeset	1202
3185 9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	1203 case 2:
10307 4e4270ab70d6 support complex case in qz Jyh-miin Lin <jyhmiinlin@gmail.com> parents: 10155 diff changeset	1204 {
10311 a217e1d74353 untabify qz.cc John W. Eaton <jwe@octave.org> parents: 10307 diff changeset	1205 if (complex_case)
a217e1d74353 untabify qz.cc John W. Eaton <jwe@octave.org> parents: 10307 diff changeset	1206 {
10307 4e4270ab70d6 support complex case in qz Jyh-miin Lin <jyhmiinlin@gmail.com> parents: 10155 diff changeset	1207 #ifdef DEBUG
14844 5bc9b9cb4362 maint: Use Octave coding conventions for cuddled parenthesis in retval assignments. Rik <octave@nomad.inbox5.com> parents: 14501 diff changeset	1208 std::cout << "qz: retval(1) = cbb = " << std::endl;
10311 a217e1d74353 untabify qz.cc John W. Eaton <jwe@octave.org> parents: 10307 diff changeset	1209 octave_print_internal (std::cout, cbb, 0);
a217e1d74353 untabify qz.cc John W. Eaton <jwe@octave.org> parents: 10307 diff changeset	1210 std::cout << std::endl << "qz: retval(0) = caa = " <<std::endl;
a217e1d74353 untabify qz.cc John W. Eaton <jwe@octave.org> parents: 10307 diff changeset	1211 octave_print_internal (std::cout, caa, 0);
a217e1d74353 untabify qz.cc John W. Eaton <jwe@octave.org> parents: 10307 diff changeset	1212 std::cout << std::endl;
11586 12df7854fa7c strip trailing whitespace from source files John W. Eaton <jwe@octave.org> parents: 11570 diff changeset	1213 #endif
10311 a217e1d74353 untabify qz.cc John W. Eaton <jwe@octave.org> parents: 10307 diff changeset	1214 retval(1) = cbb;
a217e1d74353 untabify qz.cc John W. Eaton <jwe@octave.org> parents: 10307 diff changeset	1215 retval(0) = caa;
a217e1d74353 untabify qz.cc John W. Eaton <jwe@octave.org> parents: 10307 diff changeset	1216 }
17787 175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	1217 else
175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	1218 {
3185 9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	1219 #ifdef DEBUG
17787 175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	1220 std::cout << "qz: retval(1) = bb = " << std::endl;
175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	1221 octave_print_internal (std::cout, bb, 0);
175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	1222 std::cout << std::endl << "qz: retval(0) = aa = " <<std::endl;
175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	1223 octave_print_internal (std::cout, aa, 0);
175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	1224 std::cout << std::endl;
3185 9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	1225 #endif
17787 175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	1226 retval(1) = bb;
175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	1227 retval(0) = aa;
175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	1228 }
11586 12df7854fa7c strip trailing whitespace from source files John W. Eaton <jwe@octave.org> parents: 11570 diff changeset	1229 }
10311 a217e1d74353 untabify qz.cc John W. Eaton <jwe@octave.org> parents: 10307 diff changeset	1230 break;
10307 4e4270ab70d6 support complex case in qz Jyh-miin Lin <jyhmiinlin@gmail.com> parents: 10155 diff changeset	1231
3185 9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	1232
9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	1233 case 1:
9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	1234 case 0:
9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	1235 #ifdef DEBUG
3538 0ff7323dab8b [project @ 2000-02-02 12:36:25 by jwe] jwe parents: 3531 diff changeset	1236 std::cout << "qz: retval(0) = gev = " << gev << std::endl;
3185 9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	1237 #endif
9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	1238 retval(0) = gev;
9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	1239 break;
9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	1240
9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	1241 default:
11553 01f703952eff Improve docstrings for functions in DLD-FUNCTIONS directory. Rik <octave@nomad.inbox5.com> parents: 11523 diff changeset	1242 error ("qz: too many return arguments");
3185 9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	1243 break;
3183 5edc539c2f80 [project @ 1998-09-25 03:37:22 by jwe] jwe parents: diff changeset	1244 }
5edc539c2f80 [project @ 1998-09-25 03:37:22 by jwe] jwe parents: diff changeset	1245
3185 9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	1246 #ifdef DEBUG
3538 0ff7323dab8b [project @ 2000-02-02 12:36:25 by jwe] jwe parents: 3531 diff changeset	1247 std::cout << "qz: exiting (at long last)" << std::endl;
3185 9580887dd160 [project @ 1998-09-26 02:45:55 by jwe] jwe parents: 3183 diff changeset	1248 #endif
3183 5edc539c2f80 [project @ 1998-09-25 03:37:22 by jwe] jwe parents: diff changeset	1249
5edc539c2f80 [project @ 1998-09-25 03:37:22 by jwe] jwe parents: diff changeset	1250 return retval;
5edc539c2f80 [project @ 1998-09-25 03:37:22 by jwe] jwe parents: diff changeset	1251 }
13074 0b789a03bde1 codesprint: Add 3 tests for qz.cc Jordi Gutiérrez Hermoso <jordigh@gmail.com> parents: 12642 diff changeset	1252
0b789a03bde1 codesprint: Add 3 tests for qz.cc Jordi Gutiérrez Hermoso <jordigh@gmail.com> parents: 12642 diff changeset	1253 /*
0b789a03bde1 codesprint: Add 3 tests for qz.cc Jordi Gutiérrez Hermoso <jordigh@gmail.com> parents: 12642 diff changeset	1254 %!shared a, b, c
14501 60e5cf354d80 Update %!tests in DLD-FUNCTIONS/ directory with Octave coding conventions. Rik <octave@nomad.inbox5.com> parents: 14360 diff changeset	1255 %! a = [1 2; 0 3];
60e5cf354d80 Update %!tests in DLD-FUNCTIONS/ directory with Octave coding conventions. Rik <octave@nomad.inbox5.com> parents: 14360 diff changeset	1256 %! b = [1 0; 0 0];
60e5cf354d80 Update %!tests in DLD-FUNCTIONS/ directory with Octave coding conventions. Rik <octave@nomad.inbox5.com> parents: 14360 diff changeset	1257 %! c = [0 1; 0 0];
60e5cf354d80 Update %!tests in DLD-FUNCTIONS/ directory with Octave coding conventions. Rik <octave@nomad.inbox5.com> parents: 14360 diff changeset	1258 %!assert (qz (a,b), 1)
60e5cf354d80 Update %!tests in DLD-FUNCTIONS/ directory with Octave coding conventions. Rik <octave@nomad.inbox5.com> parents: 14360 diff changeset	1259 %!assert (isempty (qz (a,c)))
13074 0b789a03bde1 codesprint: Add 3 tests for qz.cc Jordi Gutiérrez Hermoso <jordigh@gmail.com> parents: 12642 diff changeset	1260
14501 60e5cf354d80 Update %!tests in DLD-FUNCTIONS/ directory with Octave coding conventions. Rik <octave@nomad.inbox5.com> parents: 14360 diff changeset	1261 ## Exaple 7.7.3 in Golub & Van Loan
13074 0b789a03bde1 codesprint: Add 3 tests for qz.cc Jordi Gutiérrez Hermoso <jordigh@gmail.com> parents: 12642 diff changeset	1262 %!test
0b789a03bde1 codesprint: Add 3 tests for qz.cc Jordi Gutiérrez Hermoso <jordigh@gmail.com> parents: 12642 diff changeset	1263 %! a = [ 10 1 2;
0b789a03bde1 codesprint: Add 3 tests for qz.cc Jordi Gutiérrez Hermoso <jordigh@gmail.com> parents: 12642 diff changeset	1264 %! 1 2 -1;
0b789a03bde1 codesprint: Add 3 tests for qz.cc Jordi Gutiérrez Hermoso <jordigh@gmail.com> parents: 12642 diff changeset	1265 %! 1 1 2];
14501 60e5cf354d80 Update %!tests in DLD-FUNCTIONS/ directory with Octave coding conventions. Rik <octave@nomad.inbox5.com> parents: 14360 diff changeset	1266 %! b = reshape (1:9,3,3);
13074 0b789a03bde1 codesprint: Add 3 tests for qz.cc Jordi Gutiérrez Hermoso <jordigh@gmail.com> parents: 12642 diff changeset	1267 %! [aa, bb, q, z, v, w, lambda] = qz (a, b);
14501 60e5cf354d80 Update %!tests in DLD-FUNCTIONS/ directory with Octave coding conventions. Rik <octave@nomad.inbox5.com> parents: 14360 diff changeset	1268 %! sz = length (lambda);
60e5cf354d80 Update %!tests in DLD-FUNCTIONS/ directory with Octave coding conventions. Rik <octave@nomad.inbox5.com> parents: 14360 diff changeset	1269 %! observed = (b * v * diag ([lambda;0])) (:, 1:sz);
18712 6113e0c6920b maint: Clean up extra spaces before/after parentheses. Rik <rik@octave.org> parents: 17787 diff changeset	1270 %! assert ((av)(:, 1:sz), observed, norm (observed) 1e-14);
13088 4ffea87ad71b codesprint: Fix tolerance for qz.cc tests. Ben Abbott <bpabbott@mac.com> parents: 13074 diff changeset	1271 %! observed = (diag ([lambda;0]) * w' * b) (1:sz, :);
18712 6113e0c6920b maint: Clean up extra spaces before/after parentheses. Rik <rik@octave.org> parents: 17787 diff changeset	1272 %! assert ((w'a)(1:sz, :) , observed, norm (observed) 1e-13);
13088 4ffea87ad71b codesprint: Fix tolerance for qz.cc tests. Ben Abbott <bpabbott@mac.com> parents: 13074 diff changeset	1273 %! assert (q * a * z, aa, norm (aa) * 1e-14);
4ffea87ad71b codesprint: Fix tolerance for qz.cc tests. Ben Abbott <bpabbott@mac.com> parents: 13074 diff changeset	1274 %! assert (q * b * z, bb, norm (bb) * 1e-14);
13074 0b789a03bde1 codesprint: Add 3 tests for qz.cc Jordi Gutiérrez Hermoso <jordigh@gmail.com> parents: 12642 diff changeset	1275
14876 54a386f2ac4e correcly compute Z for 3-output call to qz (bug #36728) John W. Eaton <jwe@octave.org> parents: 14844 diff changeset	1276 %!test
54a386f2ac4e correcly compute Z for 3-output call to qz (bug #36728) John W. Eaton <jwe@octave.org> parents: 14844 diff changeset	1277 %! A = [0, 0, -1, 0; 1, 0, 0, 0; -1, 0, -2, -1; 0, -1, 1, 0];
54a386f2ac4e correcly compute Z for 3-output call to qz (bug #36728) John W. Eaton <jwe@octave.org> parents: 14844 diff changeset	1278 %! B = [0, 0, 0, 0; 0, 1, 0, 0; 0, 0, 1, 0; 0, 0, 0, 1];
54a386f2ac4e correcly compute Z for 3-output call to qz (bug #36728) John W. Eaton <jwe@octave.org> parents: 14844 diff changeset	1279 %! [AA, BB, Q, Z1] = qz (A, B);
54a386f2ac4e correcly compute Z for 3-output call to qz (bug #36728) John W. Eaton <jwe@octave.org> parents: 14844 diff changeset	1280 %! [AA, BB, Z2] = qz (A, B, '-');
54a386f2ac4e correcly compute Z for 3-output call to qz (bug #36728) John W. Eaton <jwe@octave.org> parents: 14844 diff changeset	1281 %! assert (Z1, Z2);
13074 0b789a03bde1 codesprint: Add 3 tests for qz.cc Jordi Gutiérrez Hermoso <jordigh@gmail.com> parents: 12642 diff changeset	1282 */

Mercurial > octave-nkf

annotate libinterp/corefcn/qz.cc @ 20616:fd0efcdb3718