Mercurial > octave-nkf

annotate liboctave/floatHESS.cc @ 8710:739141cde75a ss-3-1-52

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
fix typo in Array-f.cc
author Jaroslav Hajek <highegg@gmail.com>
date Mon, 09 Feb 2009 21:51:31 +0100
parents 39c1026191e9
children eb63fbe60fab
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
7792
39c1026191e9 add missing files from single-precision merge
John W. Eaton <jwe@octave.org>
parents:
diff changeset
1 /*
39c1026191e9 add missing files from single-precision merge
John W. Eaton <jwe@octave.org>
parents:
diff changeset
2
39c1026191e9 add missing files from single-precision merge
John W. Eaton <jwe@octave.org>
parents:
diff changeset
3 Copyright (C) 1994, 1995, 1996, 1997, 2002, 2003, 2004, 2005, 2007
39c1026191e9 add missing files from single-precision merge
John W. Eaton <jwe@octave.org>
parents:
diff changeset
4 John W. Eaton
39c1026191e9 add missing files from single-precision merge
John W. Eaton <jwe@octave.org>
parents:
diff changeset
5
39c1026191e9 add missing files from single-precision merge
John W. Eaton <jwe@octave.org>
parents:
diff changeset
6 This file is part of Octave.
39c1026191e9 add missing files from single-precision merge
John W. Eaton <jwe@octave.org>
parents:
diff changeset
7
39c1026191e9 add missing files from single-precision merge
John W. Eaton <jwe@octave.org>
parents:
diff changeset
8 Octave is free software; you can redistribute it and/or modify it
39c1026191e9 add missing files from single-precision merge
John W. Eaton <jwe@octave.org>
parents:
diff changeset
9 under the terms of the GNU General Public License as published by the
39c1026191e9 add missing files from single-precision merge
John W. Eaton <jwe@octave.org>
parents:
diff changeset
10 Free Software Foundation; either version 3 of the License, or (at your
39c1026191e9 add missing files from single-precision merge
John W. Eaton <jwe@octave.org>
parents:
diff changeset
11 option) any later version.
39c1026191e9 add missing files from single-precision merge
John W. Eaton <jwe@octave.org>
parents:
diff changeset
12
39c1026191e9 add missing files from single-precision merge
John W. Eaton <jwe@octave.org>
parents:
diff changeset
13 Octave is distributed in the hope that it will be useful, but WITHOUT
39c1026191e9 add missing files from single-precision merge
John W. Eaton <jwe@octave.org>
parents:
diff changeset
14 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
39c1026191e9 add missing files from single-precision merge
John W. Eaton <jwe@octave.org>
parents:
diff changeset
15 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
39c1026191e9 add missing files from single-precision merge
John W. Eaton <jwe@octave.org>
parents:
diff changeset
16 for more details.
39c1026191e9 add missing files from single-precision merge
John W. Eaton <jwe@octave.org>
parents:
diff changeset
17
39c1026191e9 add missing files from single-precision merge
John W. Eaton <jwe@octave.org>
parents:
diff changeset
18 You should have received a copy of the GNU General Public License
39c1026191e9 add missing files from single-precision merge
John W. Eaton <jwe@octave.org>
parents:
diff changeset
19 along with Octave; see the file COPYING. If not, see
39c1026191e9 add missing files from single-precision merge
John W. Eaton <jwe@octave.org>
parents:
diff changeset
20 <http://www.gnu.org/licenses/>.
39c1026191e9 add missing files from single-precision merge
John W. Eaton <jwe@octave.org>
parents:
diff changeset
21
39c1026191e9 add missing files from single-precision merge
John W. Eaton <jwe@octave.org>
parents:
diff changeset
22 */
39c1026191e9 add missing files from single-precision merge
John W. Eaton <jwe@octave.org>
parents:
diff changeset
23
39c1026191e9 add missing files from single-precision merge
John W. Eaton <jwe@octave.org>
parents:
diff changeset
24 #ifdef HAVE_CONFIG_H
39c1026191e9 add missing files from single-precision merge
John W. Eaton <jwe@octave.org>
parents:
diff changeset
25 #include <config.h>
39c1026191e9 add missing files from single-precision merge
John W. Eaton <jwe@octave.org>
parents:
diff changeset
26 #endif
39c1026191e9 add missing files from single-precision merge
John W. Eaton <jwe@octave.org>
parents:
diff changeset
27
39c1026191e9 add missing files from single-precision merge
John W. Eaton <jwe@octave.org>
parents:
diff changeset
28 #include "floatHESS.h"
39c1026191e9 add missing files from single-precision merge
John W. Eaton <jwe@octave.org>
parents:
diff changeset
29 #include "f77-fcn.h"
39c1026191e9 add missing files from single-precision merge
John W. Eaton <jwe@octave.org>
parents:
diff changeset
30 #include "lo-error.h"
39c1026191e9 add missing files from single-precision merge
John W. Eaton <jwe@octave.org>
parents:
diff changeset
31
39c1026191e9 add missing files from single-precision merge
John W. Eaton <jwe@octave.org>
parents:
diff changeset
32 extern "C"
39c1026191e9 add missing files from single-precision merge
John W. Eaton <jwe@octave.org>
parents:
diff changeset
33 {
39c1026191e9 add missing files from single-precision merge
John W. Eaton <jwe@octave.org>
parents:
diff changeset
34 F77_RET_T
39c1026191e9 add missing files from single-precision merge
John W. Eaton <jwe@octave.org>
parents:
diff changeset
35 F77_FUNC (sgebal, SGEBAL) (F77_CONST_CHAR_ARG_DECL,
39c1026191e9 add missing files from single-precision merge
John W. Eaton <jwe@octave.org>
parents:
diff changeset
36 const octave_idx_type&, float*, const octave_idx_type&, octave_idx_type&,
39c1026191e9 add missing files from single-precision merge
John W. Eaton <jwe@octave.org>
parents:
diff changeset
37 octave_idx_type&, float*, octave_idx_type&
39c1026191e9 add missing files from single-precision merge
John W. Eaton <jwe@octave.org>
parents:
diff changeset
38 F77_CHAR_ARG_LEN_DECL);
39c1026191e9 add missing files from single-precision merge
John W. Eaton <jwe@octave.org>
parents:
diff changeset
39
39c1026191e9 add missing files from single-precision merge
John W. Eaton <jwe@octave.org>
parents:
diff changeset
40 F77_RET_T
39c1026191e9 add missing files from single-precision merge
John W. Eaton <jwe@octave.org>
parents:
diff changeset
41 F77_FUNC (sgehrd, SGEHRD) (const octave_idx_type&, const octave_idx_type&, const octave_idx_type&,
39c1026191e9 add missing files from single-precision merge
John W. Eaton <jwe@octave.org>
parents:
diff changeset
42 float*, const octave_idx_type&, float*, float*,
39c1026191e9 add missing files from single-precision merge
John W. Eaton <jwe@octave.org>
parents:
diff changeset
43 const octave_idx_type&, octave_idx_type&);
39c1026191e9 add missing files from single-precision merge
John W. Eaton <jwe@octave.org>
parents:
diff changeset
44
39c1026191e9 add missing files from single-precision merge
John W. Eaton <jwe@octave.org>
parents:
diff changeset
45 F77_RET_T
39c1026191e9 add missing files from single-precision merge
John W. Eaton <jwe@octave.org>
parents:
diff changeset
46 F77_FUNC (sorghr, SORGHR) (const octave_idx_type&, const octave_idx_type&, const octave_idx_type&,
39c1026191e9 add missing files from single-precision merge
John W. Eaton <jwe@octave.org>
parents:
diff changeset
47 float*, const octave_idx_type&, float*, float*,
39c1026191e9 add missing files from single-precision merge
John W. Eaton <jwe@octave.org>
parents:
diff changeset
48 const octave_idx_type&, octave_idx_type&);
39c1026191e9 add missing files from single-precision merge
John W. Eaton <jwe@octave.org>
parents:
diff changeset
49
39c1026191e9 add missing files from single-precision merge
John W. Eaton <jwe@octave.org>
parents:
diff changeset
50 F77_RET_T
39c1026191e9 add missing files from single-precision merge
John W. Eaton <jwe@octave.org>
parents:
diff changeset
51 F77_FUNC (sgebak, SGEBAK) (F77_CONST_CHAR_ARG_DECL,
39c1026191e9 add missing files from single-precision merge
John W. Eaton <jwe@octave.org>
parents:
diff changeset
52 F77_CONST_CHAR_ARG_DECL,
39c1026191e9 add missing files from single-precision merge
John W. Eaton <jwe@octave.org>
parents:
diff changeset
53 const octave_idx_type&, const octave_idx_type&, const octave_idx_type&, float*,
39c1026191e9 add missing files from single-precision merge
John W. Eaton <jwe@octave.org>
parents:
diff changeset
54 const octave_idx_type&, float*, const octave_idx_type&, octave_idx_type&
39c1026191e9 add missing files from single-precision merge
John W. Eaton <jwe@octave.org>
parents:
diff changeset
55 F77_CHAR_ARG_LEN_DECL
39c1026191e9 add missing files from single-precision merge
John W. Eaton <jwe@octave.org>
parents:
diff changeset
56 F77_CHAR_ARG_LEN_DECL);
39c1026191e9 add missing files from single-precision merge
John W. Eaton <jwe@octave.org>
parents:
diff changeset
57 }
39c1026191e9 add missing files from single-precision merge
John W. Eaton <jwe@octave.org>
parents:
diff changeset
58
39c1026191e9 add missing files from single-precision merge
John W. Eaton <jwe@octave.org>
parents:
diff changeset
59 octave_idx_type
39c1026191e9 add missing files from single-precision merge
John W. Eaton <jwe@octave.org>
parents:
diff changeset
60 FloatHESS::init (const FloatMatrix& a)
39c1026191e9 add missing files from single-precision merge
John W. Eaton <jwe@octave.org>
parents:
diff changeset
61 {
39c1026191e9 add missing files from single-precision merge
John W. Eaton <jwe@octave.org>
parents:
diff changeset
62 octave_idx_type a_nr = a.rows ();
39c1026191e9 add missing files from single-precision merge
John W. Eaton <jwe@octave.org>
parents:
diff changeset
63 octave_idx_type a_nc = a.cols ();
39c1026191e9 add missing files from single-precision merge
John W. Eaton <jwe@octave.org>
parents:
diff changeset
64
39c1026191e9 add missing files from single-precision merge
John W. Eaton <jwe@octave.org>
parents:
diff changeset
65 if (a_nr != a_nc)
39c1026191e9 add missing files from single-precision merge
John W. Eaton <jwe@octave.org>
parents:
diff changeset
66 {
39c1026191e9 add missing files from single-precision merge
John W. Eaton <jwe@octave.org>
parents:
diff changeset
67 (*current_liboctave_error_handler) ("FloatHESS requires square matrix");
39c1026191e9 add missing files from single-precision merge
John W. Eaton <jwe@octave.org>
parents:
diff changeset
68 return -1;
39c1026191e9 add missing files from single-precision merge
John W. Eaton <jwe@octave.org>
parents:
diff changeset
69 }
39c1026191e9 add missing files from single-precision merge
John W. Eaton <jwe@octave.org>
parents:
diff changeset
70
39c1026191e9 add missing files from single-precision merge
John W. Eaton <jwe@octave.org>
parents:
diff changeset
71 char job = 'N';
39c1026191e9 add missing files from single-precision merge
John W. Eaton <jwe@octave.org>
parents:
diff changeset
72 char side = 'R';
39c1026191e9 add missing files from single-precision merge
John W. Eaton <jwe@octave.org>
parents:
diff changeset
73
39c1026191e9 add missing files from single-precision merge
John W. Eaton <jwe@octave.org>
parents:
diff changeset
74 octave_idx_type n = a_nc;
39c1026191e9 add missing files from single-precision merge
John W. Eaton <jwe@octave.org>
parents:
diff changeset
75 octave_idx_type lwork = 32 * n;
39c1026191e9 add missing files from single-precision merge
John W. Eaton <jwe@octave.org>
parents:
diff changeset
76 octave_idx_type info;
39c1026191e9 add missing files from single-precision merge
John W. Eaton <jwe@octave.org>
parents:
diff changeset
77 octave_idx_type ilo;
39c1026191e9 add missing files from single-precision merge
John W. Eaton <jwe@octave.org>
parents:
diff changeset
78 octave_idx_type ihi;
39c1026191e9 add missing files from single-precision merge
John W. Eaton <jwe@octave.org>
parents:
diff changeset
79
39c1026191e9 add missing files from single-precision merge
John W. Eaton <jwe@octave.org>
parents:
diff changeset
80 hess_mat = a;
39c1026191e9 add missing files from single-precision merge
John W. Eaton <jwe@octave.org>
parents:
diff changeset
81 float *h = hess_mat.fortran_vec ();
39c1026191e9 add missing files from single-precision merge
John W. Eaton <jwe@octave.org>
parents:
diff changeset
82
39c1026191e9 add missing files from single-precision merge
John W. Eaton <jwe@octave.org>
parents:
diff changeset
83 Array<float> scale (n);
39c1026191e9 add missing files from single-precision merge
John W. Eaton <jwe@octave.org>
parents:
diff changeset
84 float *pscale = scale.fortran_vec ();
39c1026191e9 add missing files from single-precision merge
John W. Eaton <jwe@octave.org>
parents:
diff changeset
85
39c1026191e9 add missing files from single-precision merge
John W. Eaton <jwe@octave.org>
parents:
diff changeset
86 F77_XFCN (sgebal, SGEBAL, (F77_CONST_CHAR_ARG2 (&job, 1),
39c1026191e9 add missing files from single-precision merge
John W. Eaton <jwe@octave.org>
parents:
diff changeset
87 n, h, n, ilo, ihi, pscale, info
39c1026191e9 add missing files from single-precision merge
John W. Eaton <jwe@octave.org>
parents:
diff changeset
88 F77_CHAR_ARG_LEN (1)));
39c1026191e9 add missing files from single-precision merge
John W. Eaton <jwe@octave.org>
parents:
diff changeset
89
39c1026191e9 add missing files from single-precision merge
John W. Eaton <jwe@octave.org>
parents:
diff changeset
90 Array<float> tau (n-1);
39c1026191e9 add missing files from single-precision merge
John W. Eaton <jwe@octave.org>
parents:
diff changeset
91 float *ptau = tau.fortran_vec ();
39c1026191e9 add missing files from single-precision merge
John W. Eaton <jwe@octave.org>
parents:
diff changeset
92
39c1026191e9 add missing files from single-precision merge
John W. Eaton <jwe@octave.org>
parents:
diff changeset
93 Array<float> work (lwork);
39c1026191e9 add missing files from single-precision merge
John W. Eaton <jwe@octave.org>
parents:
diff changeset
94 float *pwork = work.fortran_vec ();
39c1026191e9 add missing files from single-precision merge
John W. Eaton <jwe@octave.org>
parents:
diff changeset
95
39c1026191e9 add missing files from single-precision merge
John W. Eaton <jwe@octave.org>
parents:
diff changeset
96 F77_XFCN (sgehrd, SGEHRD, (n, ilo, ihi, h, n, ptau, pwork,
39c1026191e9 add missing files from single-precision merge
John W. Eaton <jwe@octave.org>
parents:
diff changeset
97 lwork, info));
39c1026191e9 add missing files from single-precision merge
John W. Eaton <jwe@octave.org>
parents:
diff changeset
98
39c1026191e9 add missing files from single-precision merge
John W. Eaton <jwe@octave.org>
parents:
diff changeset
99 unitary_hess_mat = hess_mat;
39c1026191e9 add missing files from single-precision merge
John W. Eaton <jwe@octave.org>
parents:
diff changeset
100 float *z = unitary_hess_mat.fortran_vec ();
39c1026191e9 add missing files from single-precision merge
John W. Eaton <jwe@octave.org>
parents:
diff changeset
101
39c1026191e9 add missing files from single-precision merge
John W. Eaton <jwe@octave.org>
parents:
diff changeset
102 F77_XFCN (sorghr, SORGHR, (n, ilo, ihi, z, n, ptau, pwork,
39c1026191e9 add missing files from single-precision merge
John W. Eaton <jwe@octave.org>
parents:
diff changeset
103 lwork, info));
39c1026191e9 add missing files from single-precision merge
John W. Eaton <jwe@octave.org>
parents:
diff changeset
104
39c1026191e9 add missing files from single-precision merge
John W. Eaton <jwe@octave.org>
parents:
diff changeset
105 F77_XFCN (sgebak, SGEBAK, (F77_CONST_CHAR_ARG2 (&job, 1),
39c1026191e9 add missing files from single-precision merge
John W. Eaton <jwe@octave.org>
parents:
diff changeset
106 F77_CONST_CHAR_ARG2 (&side, 1),
39c1026191e9 add missing files from single-precision merge
John W. Eaton <jwe@octave.org>
parents:
diff changeset
107 n, ilo, ihi, pscale, n, z,
39c1026191e9 add missing files from single-precision merge
John W. Eaton <jwe@octave.org>
parents:
diff changeset
108 n, info
39c1026191e9 add missing files from single-precision merge
John W. Eaton <jwe@octave.org>
parents:
diff changeset
109 F77_CHAR_ARG_LEN (1)
39c1026191e9 add missing files from single-precision merge
John W. Eaton <jwe@octave.org>
parents:
diff changeset
110 F77_CHAR_ARG_LEN (1)));
39c1026191e9 add missing files from single-precision merge
John W. Eaton <jwe@octave.org>
parents:
diff changeset
111
39c1026191e9 add missing files from single-precision merge
John W. Eaton <jwe@octave.org>
parents:
diff changeset
112 // If someone thinks of a more graceful way of doing
39c1026191e9 add missing files from single-precision merge
John W. Eaton <jwe@octave.org>
parents:
diff changeset
113 // this (or faster for that matter :-)), please let
39c1026191e9 add missing files from single-precision merge
John W. Eaton <jwe@octave.org>
parents:
diff changeset
114 // me know!
39c1026191e9 add missing files from single-precision merge
John W. Eaton <jwe@octave.org>
parents:
diff changeset
115
39c1026191e9 add missing files from single-precision merge
John W. Eaton <jwe@octave.org>
parents:
diff changeset
116 if (n > 2)
39c1026191e9 add missing files from single-precision merge
John W. Eaton <jwe@octave.org>
parents:
diff changeset
117 for (octave_idx_type j = 0; j < a_nc; j++)
39c1026191e9 add missing files from single-precision merge
John W. Eaton <jwe@octave.org>
parents:
diff changeset
118 for (octave_idx_type i = j+2; i < a_nr; i++)
39c1026191e9 add missing files from single-precision merge
John W. Eaton <jwe@octave.org>
parents:
diff changeset
119 hess_mat.elem (i, j) = 0;
39c1026191e9 add missing files from single-precision merge
John W. Eaton <jwe@octave.org>
parents:
diff changeset
120
39c1026191e9 add missing files from single-precision merge
John W. Eaton <jwe@octave.org>
parents:
diff changeset
121 return info;
39c1026191e9 add missing files from single-precision merge
John W. Eaton <jwe@octave.org>
parents:
diff changeset
122 }
39c1026191e9 add missing files from single-precision merge
John W. Eaton <jwe@octave.org>
parents:
diff changeset
123
39c1026191e9 add missing files from single-precision merge
John W. Eaton <jwe@octave.org>
parents:
diff changeset
124 /*
39c1026191e9 add missing files from single-precision merge
John W. Eaton <jwe@octave.org>
parents:
diff changeset
125 ;;; Local Variables: ***
39c1026191e9 add missing files from single-precision merge
John W. Eaton <jwe@octave.org>
parents:
diff changeset
126 ;;; mode: C++ ***
39c1026191e9 add missing files from single-precision merge
John W. Eaton <jwe@octave.org>
parents:
diff changeset
127 ;;; End: ***
39c1026191e9 add missing files from single-precision merge
John W. Eaton <jwe@octave.org>
parents:
diff changeset
128 */