Mercurial > hg > octave-nkf

annotate liboctave/fCmplxSVD.cc @ 15283:a95432e7309c stable release-3-6-3

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Version 3.6.3 released. * configure.ac (AC_INIT): Version is now 3.6.3. (OCTAVE_RELEASE_DATE): Now 2012-09-04.
author John W. Eaton <jwe@octave.org>
date Tue, 04 Sep 2012 13:17:13 -0400
parents 72c96de7a403
children 8ced82e96b48
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
7789
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
diff changeset
1 /*
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
diff changeset
2
14138
72c96de7a403 maint: update copyright notices for 2012
John W. Eaton <jwe@octave.org>
parents: 11574
diff changeset
3 Copyright (C) 1994-2012 John W. Eaton
7789
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
diff changeset
4
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
diff changeset
5 This file is part of Octave.
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
diff changeset
6
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
diff changeset
7 Octave is free software; you can redistribute it and/or modify it
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
diff changeset
8 under the terms of the GNU General Public License as published by the
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
diff changeset
9 Free Software Foundation; either version 3 of the License, or (at your
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
diff changeset
10 option) any later version.
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
diff changeset
11
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
diff changeset
12 Octave is distributed in the hope that it will be useful, but WITHOUT
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
diff changeset
13 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
diff changeset
14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
diff changeset
15 for more details.
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
diff changeset
16
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
diff changeset
17 You should have received a copy of the GNU General Public License
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
diff changeset
18 along with Octave; see the file COPYING. If not, see
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
diff changeset
19 <http://www.gnu.org/licenses/>.
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
diff changeset
20
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
diff changeset
21 */
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
diff changeset
22
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
diff changeset
23 #ifdef HAVE_CONFIG_H
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
diff changeset
24 #include <config.h>
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
diff changeset
25 #endif
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
diff changeset
26
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
diff changeset
27 #include "fCmplxSVD.h"
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
diff changeset
28 #include "f77-fcn.h"
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
diff changeset
29 #include "lo-error.h"
10601
3ce0c530a9c9 implement svd_driver
Jaroslav Hajek <highegg@gmail.com>
parents: 10350
diff changeset
30 #include "oct-locbuf.h"
7789
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
diff changeset
31
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
diff changeset
32 extern "C"
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
diff changeset
33 {
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
diff changeset
34 F77_RET_T
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
diff changeset
35 F77_FUNC (cgesvd, CGESVD) (F77_CONST_CHAR_ARG_DECL,
10314
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10258
diff changeset
36 F77_CONST_CHAR_ARG_DECL,
11495
8a5e980da6aa style fixes
John W. Eaton <jwe@octave.org>
parents: 10601
diff changeset
37 const octave_idx_type&, const octave_idx_type&,
8a5e980da6aa style fixes
John W. Eaton <jwe@octave.org>
parents: 10601
diff changeset
38 FloatComplex*, const octave_idx_type&, float*,
8a5e980da6aa style fixes
John W. Eaton <jwe@octave.org>
parents: 10601
diff changeset
39 FloatComplex*, const octave_idx_type&,
8a5e980da6aa style fixes
John W. Eaton <jwe@octave.org>
parents: 10601
diff changeset
40 FloatComplex*, const octave_idx_type&,
8a5e980da6aa style fixes
John W. Eaton <jwe@octave.org>
parents: 10601
diff changeset
41 FloatComplex*, const octave_idx_type&,
10314
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10258
diff changeset
42 float*, octave_idx_type&
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10258
diff changeset
43 F77_CHAR_ARG_LEN_DECL
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10258
diff changeset
44 F77_CHAR_ARG_LEN_DECL);
10601
3ce0c530a9c9 implement svd_driver
Jaroslav Hajek <highegg@gmail.com>
parents: 10350
diff changeset
45
3ce0c530a9c9 implement svd_driver
Jaroslav Hajek <highegg@gmail.com>
parents: 10350
diff changeset
46 F77_RET_T
3ce0c530a9c9 implement svd_driver
Jaroslav Hajek <highegg@gmail.com>
parents: 10350
diff changeset
47 F77_FUNC (cgesdd, CGESDD) (F77_CONST_CHAR_ARG_DECL,
11495
8a5e980da6aa style fixes
John W. Eaton <jwe@octave.org>
parents: 10601
diff changeset
48 const octave_idx_type&, const octave_idx_type&,
8a5e980da6aa style fixes
John W. Eaton <jwe@octave.org>
parents: 10601
diff changeset
49 FloatComplex*, const octave_idx_type&, float*,
8a5e980da6aa style fixes
John W. Eaton <jwe@octave.org>
parents: 10601
diff changeset
50 FloatComplex*, const octave_idx_type&,
8a5e980da6aa style fixes
John W. Eaton <jwe@octave.org>
parents: 10601
diff changeset
51 FloatComplex*, const octave_idx_type&,
8a5e980da6aa style fixes
John W. Eaton <jwe@octave.org>
parents: 10601
diff changeset
52 FloatComplex*, const octave_idx_type&,
10601
3ce0c530a9c9 implement svd_driver
Jaroslav Hajek <highegg@gmail.com>
parents: 10350
diff changeset
53 float*, octave_idx_type *, octave_idx_type&
3ce0c530a9c9 implement svd_driver
Jaroslav Hajek <highegg@gmail.com>
parents: 10350
diff changeset
54 F77_CHAR_ARG_LEN_DECL);
7789
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
diff changeset
55 }
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
diff changeset
56
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
diff changeset
57 FloatComplexMatrix
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
diff changeset
58 FloatComplexSVD::left_singular_matrix (void) const
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
diff changeset
59 {
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
diff changeset
60 if (type_computed == SVD::sigma_only)
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
diff changeset
61 {
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
diff changeset
62 (*current_liboctave_error_handler)
10314
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10258
diff changeset
63 ("FloatComplexSVD: U not computed because type == SVD::sigma_only");
7789
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
diff changeset
64 return FloatComplexMatrix ();
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
diff changeset
65 }
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
diff changeset
66 else
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
diff changeset
67 return left_sm;
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
diff changeset
68 }
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
diff changeset
69
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
diff changeset
70 FloatComplexMatrix
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
diff changeset
71 FloatComplexSVD::right_singular_matrix (void) const
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
diff changeset
72 {
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
diff changeset
73 if (type_computed == SVD::sigma_only)
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
diff changeset
74 {
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
diff changeset
75 (*current_liboctave_error_handler)
10314
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10258
diff changeset
76 ("FloatComplexSVD: V not computed because type == SVD::sigma_only");
7789
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
diff changeset
77 return FloatComplexMatrix ();
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
diff changeset
78 }
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
diff changeset
79 else
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
diff changeset
80 return right_sm;
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
diff changeset
81 }
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
diff changeset
82
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
diff changeset
83 octave_idx_type
11518
141b3fb5cef7 style fixes
John W. Eaton <jwe@octave.org>
parents: 11495
diff changeset
84 FloatComplexSVD::init (const FloatComplexMatrix& a, SVD::type svd_type,
141b3fb5cef7 style fixes
John W. Eaton <jwe@octave.org>
parents: 11495
diff changeset
85 SVD::driver svd_driver)
7789
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
diff changeset
86 {
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
diff changeset
87 octave_idx_type info;
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
diff changeset
88
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
diff changeset
89 octave_idx_type m = a.rows ();
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
diff changeset
90 octave_idx_type n = a.cols ();
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
diff changeset
91
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
diff changeset
92 FloatComplexMatrix atmp = a;
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
diff changeset
93 FloatComplex *tmp_data = atmp.fortran_vec ();
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
diff changeset
94
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
diff changeset
95 octave_idx_type min_mn = m < n ? m : n;
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
diff changeset
96 octave_idx_type max_mn = m > n ? m : n;
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
diff changeset
97
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
diff changeset
98 char jobu = 'A';
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
diff changeset
99 char jobv = 'A';
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
diff changeset
100
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
diff changeset
101 octave_idx_type ncol_u = m;
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
diff changeset
102 octave_idx_type nrow_vt = n;
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
diff changeset
103 octave_idx_type nrow_s = m;
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
diff changeset
104 octave_idx_type ncol_s = n;
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
diff changeset
105
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
diff changeset
106 switch (svd_type)
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
diff changeset
107 {
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
diff changeset
108 case SVD::economy:
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
diff changeset
109 jobu = jobv = 'S';
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
diff changeset
110 ncol_u = nrow_vt = nrow_s = ncol_s = min_mn;
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
diff changeset
111 break;
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
diff changeset
112
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
diff changeset
113 case SVD::sigma_only:
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
diff changeset
114
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
diff changeset
115 // Note: for this case, both jobu and jobv should be 'N', but
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
diff changeset
116 // there seems to be a bug in dgesvd from Lapack V2.0. To
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
diff changeset
117 // demonstrate the bug, set both jobu and jobv to 'N' and find
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
diff changeset
118 // the singular values of [eye(3), eye(3)]. The result is
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
diff changeset
119 // [-sqrt(2), -sqrt(2), -sqrt(2)].
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
diff changeset
120 //
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
diff changeset
121 // For Lapack 3.0, this problem seems to be fixed.
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
diff changeset
122
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
diff changeset
123 jobu = 'N';
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
diff changeset
124 jobv = 'N';
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
diff changeset
125 ncol_u = nrow_vt = 1;
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
diff changeset
126 break;
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
diff changeset
127
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
diff changeset
128 default:
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
diff changeset
129 break;
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
diff changeset
130 }
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
diff changeset
131
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
diff changeset
132 type_computed = svd_type;
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
diff changeset
133
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
diff changeset
134 if (! (jobu == 'N' || jobu == 'O'))
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
diff changeset
135 left_sm.resize (m, ncol_u);
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
diff changeset
136
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
diff changeset
137 FloatComplex *u = left_sm.fortran_vec ();
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
diff changeset
138
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
diff changeset
139 sigma.resize (nrow_s, ncol_s);
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
diff changeset
140 float *s_vec = sigma.fortran_vec ();
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
diff changeset
141
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
diff changeset
142 if (! (jobv == 'N' || jobv == 'O'))
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
diff changeset
143 right_sm.resize (nrow_vt, n);
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
diff changeset
144
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
diff changeset
145 FloatComplex *vt = right_sm.fortran_vec ();
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
diff changeset
146
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
diff changeset
147 octave_idx_type lrwork = 5*max_mn;
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
diff changeset
148
11570
57632dea2446 attempt better backward compatibility for Array constructors
John W. Eaton <jwe@octave.org>
parents: 11523
diff changeset
149 Array<float> rwork (dim_vector (lrwork, 1));
7789
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
diff changeset
150
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
diff changeset
151 // Ask ZGESVD what the dimension of WORK should be.
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
diff changeset
152
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
diff changeset
153 octave_idx_type lwork = -1;
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
diff changeset
154
11570
57632dea2446 attempt better backward compatibility for Array constructors
John W. Eaton <jwe@octave.org>
parents: 11523
diff changeset
155 Array<FloatComplex> work (dim_vector (1, 1));
7789
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
diff changeset
156
10258
e317791645c4 64-bit fixes
John W. Eaton <jwe@octave.org>
parents: 10185
diff changeset
157 octave_idx_type one = 1;
e317791645c4 64-bit fixes
John W. Eaton <jwe@octave.org>
parents: 10185
diff changeset
158 octave_idx_type m1 = std::max (m, one), nrow_vt1 = std::max (nrow_vt, one);
10185
455759a5fcbe fix norm and svd on empty matrices
Jaroslav Hajek <highegg@gmail.com>
parents: 10158
diff changeset
159
10601
3ce0c530a9c9 implement svd_driver
Jaroslav Hajek <highegg@gmail.com>
parents: 10350
diff changeset
160 if (svd_driver == SVD::GESVD)
3ce0c530a9c9 implement svd_driver
Jaroslav Hajek <highegg@gmail.com>
parents: 10350
diff changeset
161 {
3ce0c530a9c9 implement svd_driver
Jaroslav Hajek <highegg@gmail.com>
parents: 10350
diff changeset
162 F77_XFCN (cgesvd, CGESVD, (F77_CONST_CHAR_ARG2 (&jobu, 1),
3ce0c530a9c9 implement svd_driver
Jaroslav Hajek <highegg@gmail.com>
parents: 10350
diff changeset
163 F77_CONST_CHAR_ARG2 (&jobv, 1),
3ce0c530a9c9 implement svd_driver
Jaroslav Hajek <highegg@gmail.com>
parents: 10350
diff changeset
164 m, n, tmp_data, m1, s_vec, u, m1, vt,
3ce0c530a9c9 implement svd_driver
Jaroslav Hajek <highegg@gmail.com>
parents: 10350
diff changeset
165 nrow_vt1, work.fortran_vec (), lwork,
3ce0c530a9c9 implement svd_driver
Jaroslav Hajek <highegg@gmail.com>
parents: 10350
diff changeset
166 rwork.fortran_vec (), info
3ce0c530a9c9 implement svd_driver
Jaroslav Hajek <highegg@gmail.com>
parents: 10350
diff changeset
167 F77_CHAR_ARG_LEN (1)
3ce0c530a9c9 implement svd_driver
Jaroslav Hajek <highegg@gmail.com>
parents: 10350
diff changeset
168 F77_CHAR_ARG_LEN (1)));
3ce0c530a9c9 implement svd_driver
Jaroslav Hajek <highegg@gmail.com>
parents: 10350
diff changeset
169
3ce0c530a9c9 implement svd_driver
Jaroslav Hajek <highegg@gmail.com>
parents: 10350
diff changeset
170 lwork = static_cast<octave_idx_type> (work(0).real ());
11574
a83bad07f7e3 attempt better backward compatibility for Array resize functions
John W. Eaton <jwe@octave.org>
parents: 11570
diff changeset
171 work.resize (dim_vector (lwork, 1));
7789
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
diff changeset
172
10601
3ce0c530a9c9 implement svd_driver
Jaroslav Hajek <highegg@gmail.com>
parents: 10350
diff changeset
173 F77_XFCN (cgesvd, CGESVD, (F77_CONST_CHAR_ARG2 (&jobu, 1),
3ce0c530a9c9 implement svd_driver
Jaroslav Hajek <highegg@gmail.com>
parents: 10350
diff changeset
174 F77_CONST_CHAR_ARG2 (&jobv, 1),
3ce0c530a9c9 implement svd_driver
Jaroslav Hajek <highegg@gmail.com>
parents: 10350
diff changeset
175 m, n, tmp_data, m1, s_vec, u, m1, vt,
3ce0c530a9c9 implement svd_driver
Jaroslav Hajek <highegg@gmail.com>
parents: 10350
diff changeset
176 nrow_vt1, work.fortran_vec (), lwork,
3ce0c530a9c9 implement svd_driver
Jaroslav Hajek <highegg@gmail.com>
parents: 10350
diff changeset
177 rwork.fortran_vec (), info
3ce0c530a9c9 implement svd_driver
Jaroslav Hajek <highegg@gmail.com>
parents: 10350
diff changeset
178 F77_CHAR_ARG_LEN (1)
3ce0c530a9c9 implement svd_driver
Jaroslav Hajek <highegg@gmail.com>
parents: 10350
diff changeset
179 F77_CHAR_ARG_LEN (1)));
3ce0c530a9c9 implement svd_driver
Jaroslav Hajek <highegg@gmail.com>
parents: 10350
diff changeset
180 }
3ce0c530a9c9 implement svd_driver
Jaroslav Hajek <highegg@gmail.com>
parents: 10350
diff changeset
181 else if (svd_driver == SVD::GESDD)
3ce0c530a9c9 implement svd_driver
Jaroslav Hajek <highegg@gmail.com>
parents: 10350
diff changeset
182 {
3ce0c530a9c9 implement svd_driver
Jaroslav Hajek <highegg@gmail.com>
parents: 10350
diff changeset
183 assert (jobu == jobv);
3ce0c530a9c9 implement svd_driver
Jaroslav Hajek <highegg@gmail.com>
parents: 10350
diff changeset
184 char jobz = jobu;
3ce0c530a9c9 implement svd_driver
Jaroslav Hajek <highegg@gmail.com>
parents: 10350
diff changeset
185 OCTAVE_LOCAL_BUFFER (octave_idx_type, iwork, 8*min_mn);
7789
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
diff changeset
186
10601
3ce0c530a9c9 implement svd_driver
Jaroslav Hajek <highegg@gmail.com>
parents: 10350
diff changeset
187 F77_XFCN (cgesdd, CGESDD, (F77_CONST_CHAR_ARG2 (&jobz, 1),
3ce0c530a9c9 implement svd_driver
Jaroslav Hajek <highegg@gmail.com>
parents: 10350
diff changeset
188 m, n, tmp_data, m1, s_vec, u, m1, vt,
3ce0c530a9c9 implement svd_driver
Jaroslav Hajek <highegg@gmail.com>
parents: 10350
diff changeset
189 nrow_vt1, work.fortran_vec (), lwork,
3ce0c530a9c9 implement svd_driver
Jaroslav Hajek <highegg@gmail.com>
parents: 10350
diff changeset
190 rwork.fortran_vec (), iwork, info
3ce0c530a9c9 implement svd_driver
Jaroslav Hajek <highegg@gmail.com>
parents: 10350
diff changeset
191 F77_CHAR_ARG_LEN (1)));
3ce0c530a9c9 implement svd_driver
Jaroslav Hajek <highegg@gmail.com>
parents: 10350
diff changeset
192
3ce0c530a9c9 implement svd_driver
Jaroslav Hajek <highegg@gmail.com>
parents: 10350
diff changeset
193 lwork = static_cast<octave_idx_type> (work(0).real ());
11574
a83bad07f7e3 attempt better backward compatibility for Array resize functions
John W. Eaton <jwe@octave.org>
parents: 11570
diff changeset
194 work.resize (dim_vector (lwork, 1));
10601
3ce0c530a9c9 implement svd_driver
Jaroslav Hajek <highegg@gmail.com>
parents: 10350
diff changeset
195
3ce0c530a9c9 implement svd_driver
Jaroslav Hajek <highegg@gmail.com>
parents: 10350
diff changeset
196 F77_XFCN (cgesdd, CGESDD, (F77_CONST_CHAR_ARG2 (&jobz, 1),
3ce0c530a9c9 implement svd_driver
Jaroslav Hajek <highegg@gmail.com>
parents: 10350
diff changeset
197 m, n, tmp_data, m1, s_vec, u, m1, vt,
3ce0c530a9c9 implement svd_driver
Jaroslav Hajek <highegg@gmail.com>
parents: 10350
diff changeset
198 nrow_vt1, work.fortran_vec (), lwork,
3ce0c530a9c9 implement svd_driver
Jaroslav Hajek <highegg@gmail.com>
parents: 10350
diff changeset
199 rwork.fortran_vec (), iwork, info
3ce0c530a9c9 implement svd_driver
Jaroslav Hajek <highegg@gmail.com>
parents: 10350
diff changeset
200 F77_CHAR_ARG_LEN (1)));
3ce0c530a9c9 implement svd_driver
Jaroslav Hajek <highegg@gmail.com>
parents: 10350
diff changeset
201 }
3ce0c530a9c9 implement svd_driver
Jaroslav Hajek <highegg@gmail.com>
parents: 10350
diff changeset
202 else
3ce0c530a9c9 implement svd_driver
Jaroslav Hajek <highegg@gmail.com>
parents: 10350
diff changeset
203 assert (0); // impossible
7789
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
diff changeset
204
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
diff changeset
205 if (! (jobv == 'N' || jobv == 'O'))
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
diff changeset
206 right_sm = right_sm.hermitian ();
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
diff changeset
207
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
diff changeset
208 return info;
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
diff changeset
209 }