Mercurial > octave-nkf
annotate liboctave/fCmplxSVD.cc @ 10843:229675bb7647 ss-3-3-52
version is now 3.3.52
author | John W. Eaton <jwe@octave.org> |
---|---|
date | Sun, 01 Aug 2010 11:49:45 -0400 |
parents | 3ce0c530a9c9 |
children | 8a5e980da6aa |
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 |
82be108cc558
First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
diff
changeset
|
3 Copyright (C) 1994, 1995, 1996, 1997, 1999, 2002, 2003, 2004, 2005, |
8920 | 4 2007, 2008 John W. Eaton |
7789
82be108cc558
First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
diff
changeset
|
5 |
82be108cc558
First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
diff
changeset
|
6 This file is part of Octave. |
82be108cc558
First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
diff
changeset
|
7 |
82be108cc558
First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
diff
changeset
|
8 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
|
9 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
|
10 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
|
11 option) any later version. |
82be108cc558
First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
diff
changeset
|
12 |
82be108cc558
First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
diff
changeset
|
13 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
|
14 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
|
15 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
|
16 for more details. |
82be108cc558
First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
diff
changeset
|
17 |
82be108cc558
First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
diff
changeset
|
18 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
|
19 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
|
20 <http://www.gnu.org/licenses/>. |
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 |
82be108cc558
First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
diff
changeset
|
24 #ifdef HAVE_CONFIG_H |
82be108cc558
First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
diff
changeset
|
25 #include <config.h> |
82be108cc558
First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
diff
changeset
|
26 #endif |
82be108cc558
First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
diff
changeset
|
27 |
82be108cc558
First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
diff
changeset
|
28 #include "fCmplxSVD.h" |
82be108cc558
First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
diff
changeset
|
29 #include "f77-fcn.h" |
82be108cc558
First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
diff
changeset
|
30 #include "lo-error.h" |
10601 | 31 #include "oct-locbuf.h" |
7789
82be108cc558
First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
diff
changeset
|
32 |
82be108cc558
First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
diff
changeset
|
33 extern "C" |
82be108cc558
First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
diff
changeset
|
34 { |
82be108cc558
First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
diff
changeset
|
35 F77_RET_T |
82be108cc558
First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
diff
changeset
|
36 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
|
37 F77_CONST_CHAR_ARG_DECL, |
07ebe522dac2
untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents:
10258
diff
changeset
|
38 const octave_idx_type&, const octave_idx_type&, FloatComplex*, |
07ebe522dac2
untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents:
10258
diff
changeset
|
39 const octave_idx_type&, float*, FloatComplex*, const octave_idx_type&, |
07ebe522dac2
untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents:
10258
diff
changeset
|
40 FloatComplex*, const octave_idx_type&, FloatComplex*, const octave_idx_type&, |
07ebe522dac2
untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents:
10258
diff
changeset
|
41 float*, octave_idx_type& |
07ebe522dac2
untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents:
10258
diff
changeset
|
42 F77_CHAR_ARG_LEN_DECL |
07ebe522dac2
untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents:
10258
diff
changeset
|
43 F77_CHAR_ARG_LEN_DECL); |
10601 | 44 |
45 F77_RET_T | |
46 F77_FUNC (cgesdd, CGESDD) (F77_CONST_CHAR_ARG_DECL, | |
47 const octave_idx_type&, const octave_idx_type&, FloatComplex*, | |
48 const octave_idx_type&, float*, FloatComplex*, const octave_idx_type&, | |
49 FloatComplex*, const octave_idx_type&, FloatComplex*, const octave_idx_type&, | |
50 float*, octave_idx_type *, octave_idx_type& | |
51 F77_CHAR_ARG_LEN_DECL); | |
7789
82be108cc558
First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
diff
changeset
|
52 } |
82be108cc558
First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
diff
changeset
|
53 |
82be108cc558
First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
diff
changeset
|
54 FloatComplexMatrix |
82be108cc558
First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
diff
changeset
|
55 FloatComplexSVD::left_singular_matrix (void) const |
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 if (type_computed == SVD::sigma_only) |
82be108cc558
First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
diff
changeset
|
58 { |
82be108cc558
First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
diff
changeset
|
59 (*current_liboctave_error_handler) |
10314
07ebe522dac2
untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents:
10258
diff
changeset
|
60 ("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
|
61 return FloatComplexMatrix (); |
82be108cc558
First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
diff
changeset
|
62 } |
82be108cc558
First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
diff
changeset
|
63 else |
82be108cc558
First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
diff
changeset
|
64 return left_sm; |
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 |
82be108cc558
First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
diff
changeset
|
67 FloatComplexMatrix |
82be108cc558
First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
diff
changeset
|
68 FloatComplexSVD::right_singular_matrix (void) const |
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 if (type_computed == SVD::sigma_only) |
82be108cc558
First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
diff
changeset
|
71 { |
82be108cc558
First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
diff
changeset
|
72 (*current_liboctave_error_handler) |
10314
07ebe522dac2
untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents:
10258
diff
changeset
|
73 ("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
|
74 return FloatComplexMatrix (); |
82be108cc558
First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
diff
changeset
|
75 } |
82be108cc558
First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
diff
changeset
|
76 else |
82be108cc558
First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
diff
changeset
|
77 return right_sm; |
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 |
82be108cc558
First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
diff
changeset
|
80 octave_idx_type |
10601 | 81 FloatComplexSVD::init (const FloatComplexMatrix& a, SVD::type svd_type, SVD::driver svd_driver) |
7789
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 info; |
82be108cc558
First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
diff
changeset
|
84 |
82be108cc558
First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
diff
changeset
|
85 octave_idx_type m = a.rows (); |
82be108cc558
First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
diff
changeset
|
86 octave_idx_type n = a.cols (); |
82be108cc558
First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
diff
changeset
|
87 |
82be108cc558
First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
diff
changeset
|
88 FloatComplexMatrix atmp = a; |
82be108cc558
First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
diff
changeset
|
89 FloatComplex *tmp_data = atmp.fortran_vec (); |
82be108cc558
First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
diff
changeset
|
90 |
82be108cc558
First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
diff
changeset
|
91 octave_idx_type min_mn = m < n ? m : n; |
82be108cc558
First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
diff
changeset
|
92 octave_idx_type max_mn = m > n ? m : n; |
82be108cc558
First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
diff
changeset
|
93 |
82be108cc558
First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
diff
changeset
|
94 char jobu = 'A'; |
82be108cc558
First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
diff
changeset
|
95 char jobv = 'A'; |
82be108cc558
First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
diff
changeset
|
96 |
82be108cc558
First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
diff
changeset
|
97 octave_idx_type ncol_u = m; |
82be108cc558
First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
diff
changeset
|
98 octave_idx_type nrow_vt = n; |
82be108cc558
First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
diff
changeset
|
99 octave_idx_type nrow_s = m; |
82be108cc558
First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
diff
changeset
|
100 octave_idx_type ncol_s = n; |
82be108cc558
First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
diff
changeset
|
101 |
82be108cc558
First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
diff
changeset
|
102 switch (svd_type) |
82be108cc558
First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
diff
changeset
|
103 { |
82be108cc558
First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
diff
changeset
|
104 case SVD::economy: |
82be108cc558
First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
diff
changeset
|
105 jobu = jobv = 'S'; |
82be108cc558
First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
diff
changeset
|
106 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
|
107 break; |
82be108cc558
First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
diff
changeset
|
108 |
82be108cc558
First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
diff
changeset
|
109 case SVD::sigma_only: |
82be108cc558
First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
diff
changeset
|
110 |
82be108cc558
First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
diff
changeset
|
111 // 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
|
112 // 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
|
113 // 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
|
114 // 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
|
115 // [-sqrt(2), -sqrt(2), -sqrt(2)]. |
82be108cc558
First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
diff
changeset
|
116 // |
82be108cc558
First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
diff
changeset
|
117 // 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
|
118 |
82be108cc558
First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
diff
changeset
|
119 jobu = 'N'; |
82be108cc558
First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
diff
changeset
|
120 jobv = 'N'; |
82be108cc558
First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
diff
changeset
|
121 ncol_u = nrow_vt = 1; |
82be108cc558
First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
diff
changeset
|
122 break; |
82be108cc558
First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
diff
changeset
|
123 |
82be108cc558
First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
diff
changeset
|
124 default: |
82be108cc558
First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
diff
changeset
|
125 break; |
82be108cc558
First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
diff
changeset
|
126 } |
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 type_computed = svd_type; |
82be108cc558
First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
diff
changeset
|
129 |
82be108cc558
First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
diff
changeset
|
130 if (! (jobu == 'N' || jobu == 'O')) |
82be108cc558
First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
diff
changeset
|
131 left_sm.resize (m, ncol_u); |
82be108cc558
First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
diff
changeset
|
132 |
82be108cc558
First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
diff
changeset
|
133 FloatComplex *u = left_sm.fortran_vec (); |
82be108cc558
First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
diff
changeset
|
134 |
82be108cc558
First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
diff
changeset
|
135 sigma.resize (nrow_s, ncol_s); |
82be108cc558
First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
diff
changeset
|
136 float *s_vec = sigma.fortran_vec (); |
82be108cc558
First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
diff
changeset
|
137 |
82be108cc558
First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
diff
changeset
|
138 if (! (jobv == 'N' || jobv == 'O')) |
82be108cc558
First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
diff
changeset
|
139 right_sm.resize (nrow_vt, n); |
82be108cc558
First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
diff
changeset
|
140 |
82be108cc558
First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
diff
changeset
|
141 FloatComplex *vt = right_sm.fortran_vec (); |
82be108cc558
First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
diff
changeset
|
142 |
82be108cc558
First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
diff
changeset
|
143 octave_idx_type lrwork = 5*max_mn; |
82be108cc558
First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
diff
changeset
|
144 |
10350
12884915a8e4
merge MArray classes & improve Array interface
Jaroslav Hajek <highegg@gmail.com>
parents:
10314
diff
changeset
|
145 Array<float> rwork (lrwork, 1); |
7789
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 // Ask ZGESVD what the dimension of WORK should be. |
82be108cc558
First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
diff
changeset
|
148 |
82be108cc558
First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
diff
changeset
|
149 octave_idx_type lwork = -1; |
82be108cc558
First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
diff
changeset
|
150 |
10350
12884915a8e4
merge MArray classes & improve Array interface
Jaroslav Hajek <highegg@gmail.com>
parents:
10314
diff
changeset
|
151 Array<FloatComplex> work (1, 1); |
7789
82be108cc558
First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
diff
changeset
|
152 |
10258 | 153 octave_idx_type one = 1; |
154 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
|
155 |
10601 | 156 if (svd_driver == SVD::GESVD) |
157 { | |
158 F77_XFCN (cgesvd, CGESVD, (F77_CONST_CHAR_ARG2 (&jobu, 1), | |
159 F77_CONST_CHAR_ARG2 (&jobv, 1), | |
160 m, n, tmp_data, m1, s_vec, u, m1, vt, | |
161 nrow_vt1, work.fortran_vec (), lwork, | |
162 rwork.fortran_vec (), info | |
163 F77_CHAR_ARG_LEN (1) | |
164 F77_CHAR_ARG_LEN (1))); | |
165 | |
166 lwork = static_cast<octave_idx_type> (work(0).real ()); | |
167 work.resize (lwork, 1); | |
7789
82be108cc558
First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
diff
changeset
|
168 |
10601 | 169 F77_XFCN (cgesvd, CGESVD, (F77_CONST_CHAR_ARG2 (&jobu, 1), |
170 F77_CONST_CHAR_ARG2 (&jobv, 1), | |
171 m, n, tmp_data, m1, s_vec, u, m1, vt, | |
172 nrow_vt1, work.fortran_vec (), lwork, | |
173 rwork.fortran_vec (), info | |
174 F77_CHAR_ARG_LEN (1) | |
175 F77_CHAR_ARG_LEN (1))); | |
176 } | |
177 else if (svd_driver == SVD::GESDD) | |
178 { | |
179 assert (jobu == jobv); | |
180 char jobz = jobu; | |
181 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
|
182 |
10601 | 183 F77_XFCN (cgesdd, CGESDD, (F77_CONST_CHAR_ARG2 (&jobz, 1), |
184 m, n, tmp_data, m1, s_vec, u, m1, vt, | |
185 nrow_vt1, work.fortran_vec (), lwork, | |
186 rwork.fortran_vec (), iwork, info | |
187 F77_CHAR_ARG_LEN (1))); | |
188 | |
189 lwork = static_cast<octave_idx_type> (work(0).real ()); | |
190 work.resize (lwork, 1); | |
191 | |
192 F77_XFCN (cgesdd, CGESDD, (F77_CONST_CHAR_ARG2 (&jobz, 1), | |
193 m, n, tmp_data, m1, s_vec, u, m1, vt, | |
194 nrow_vt1, work.fortran_vec (), lwork, | |
195 rwork.fortran_vec (), iwork, info | |
196 F77_CHAR_ARG_LEN (1))); | |
197 } | |
198 else | |
199 assert (0); // impossible | |
7789
82be108cc558
First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
diff
changeset
|
200 |
82be108cc558
First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
diff
changeset
|
201 if (! (jobv == 'N' || jobv == 'O')) |
82be108cc558
First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
diff
changeset
|
202 right_sm = right_sm.hermitian (); |
82be108cc558
First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
diff
changeset
|
203 |
82be108cc558
First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
diff
changeset
|
204 return info; |
82be108cc558
First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
diff
changeset
|
205 } |