octave: libinterp/corefcn/svd.cc annotate

annotate libinterp/corefcn/svd.cc @ 22592:ee0df00e12d6 stable

fix complex svd (bug #49232) * liboctave/numeric/svd.cc (svd<T>::svd): Use hermitian, not transpose. * libinterp/corefcn/svd.cc: New test for complex svd.

author	John W. Eaton <jwe@octave.org>
date	Wed, 05 Oct 2016 23:09:31 -0400
parents	34ce5be04942
children	68e9bdb7cde3 e9a0469dedd9

rev	line source
2928 295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe] jwe parents: diff changeset	1 /*
295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe] jwe parents: diff changeset	2
22323 bac0d6f07a3e maint: Update copyright notices for 2016. John W. Eaton <jwe@octave.org> parents: 22317 diff changeset	3 Copyright (C) 1996-2016 John W. Eaton
2928 295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe] jwe parents: diff changeset	4
295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe] jwe parents: diff changeset	5 This file is part of Octave.
295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe] jwe parents: diff changeset	6
295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe] jwe parents: diff changeset	7 Octave is free software; you can redistribute it and/or modify it
295f037b4b3e [project @ 1997-05-05 05:32:33 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: 6620 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: 6620 diff changeset	10 option) any later version.
2928 295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe] jwe parents: diff changeset	11
295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe] jwe parents: diff changeset	12 Octave is distributed in the hope that it will be useful, but WITHOUT
295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe] jwe parents: diff changeset	13 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe] jwe parents: diff changeset	14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe] jwe parents: diff changeset	15 for more details.
295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe] jwe parents: diff changeset	16
295f037b4b3e [project @ 1997-05-05 05:32:33 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: 6620 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: 6620 diff changeset	19 <http://www.gnu.org/licenses/>.
2928 295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe] jwe parents: diff changeset	20
295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe] jwe parents: diff changeset	21 */
295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe] jwe parents: diff changeset	22
21724 aba2e6293dd8 use "#if ..." consistently instead of "#ifdef" and "#ifndef" John W. Eaton <jwe@octave.org> parents: 21301 diff changeset	23 #if defined (HAVE_CONFIG_H)
21301 40de9f8f23a6 Use '#include "config.h"' rather than <config.h>. Rik <rik@octave.org> parents: 21273 diff changeset	24 # include "config.h"
2928 295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe] jwe parents: diff changeset	25 #endif
295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe] jwe parents: diff changeset	26
21273 cbced1c09916 better use of templates for svd classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	27 #include "svd.h"
2928 295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe] jwe parents: diff changeset	28
15039 e753177cde93 maint: Move non-dynamically linked functions from DLD-FUNCTIONS/ to corefcn/ directory Rik <rik@octave.org> parents: 14501 diff changeset	29 #include "defun.h"
2928 295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe] jwe parents: diff changeset	30 #include "error.h"
21100 e39e05d90788 Switch gripe_XXX to either err_XXX or warn_XXX naming scheme. Rik <rik@octave.org> parents: 20940 diff changeset	31 #include "errwarn.h"
20940 48b2ad5ee801 maint: Rename oct-obj.[cc\|h] to ovl.[cc\|h] for clarity. Rik <rik@octave.org> parents: 20939 diff changeset	32 #include "ovl.h"
2928 295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe] jwe parents: diff changeset	33 #include "pr-output.h"
295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe] jwe parents: diff changeset	34 #include "utils.h"
10638 e1559a8a60b4 general mechanism for string enum variables Jaroslav Hajek <highegg@gmail.com> parents: 10601 diff changeset	35 #include "variables.h"
2928 295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe] jwe parents: diff changeset	36
21273 cbced1c09916 better use of templates for svd classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	37 static std::string Vsvd_driver = "gesvd";
cbced1c09916 better use of templates for svd classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	38
cbced1c09916 better use of templates for svd classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	39 template <typename T>
22317 6ca3acf5fad8 move some new numeric classes to namespace octave::math John W. Eaton <jwe@octave.org> parents: 22204 diff changeset	40 static typename octave::math::svd<T>::Type
21273 cbced1c09916 better use of templates for svd classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	41 svd_type (int nargin, int nargout)
cbced1c09916 better use of templates for svd classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	42 {
cbced1c09916 better use of templates for svd classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	43 return ((nargout == 0 \|\| nargout == 1)
22317 6ca3acf5fad8 move some new numeric classes to namespace octave::math John W. Eaton <jwe@octave.org> parents: 22204 diff changeset	44 ? octave::math::svd<T>::Type::sigma_only
6ca3acf5fad8 move some new numeric classes to namespace octave::math John W. Eaton <jwe@octave.org> parents: 22204 diff changeset	45 : ((nargin == 2)
6ca3acf5fad8 move some new numeric classes to namespace octave::math John W. Eaton <jwe@octave.org> parents: 22204 diff changeset	46 ? octave::math::svd<T>::Type::economy
6ca3acf5fad8 move some new numeric classes to namespace octave::math John W. Eaton <jwe@octave.org> parents: 22204 diff changeset	47 : octave::math::svd<T>::Type::std));
21273 cbced1c09916 better use of templates for svd classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	48 }
cbced1c09916 better use of templates for svd classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	49
cbced1c09916 better use of templates for svd classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	50 template <typename T>
22317 6ca3acf5fad8 move some new numeric classes to namespace octave::math John W. Eaton <jwe@octave.org> parents: 22204 diff changeset	51 static typename octave::math::svd<T>::Driver
21273 cbced1c09916 better use of templates for svd classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	52 svd_driver (void)
cbced1c09916 better use of templates for svd classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	53 {
22317 6ca3acf5fad8 move some new numeric classes to namespace octave::math John W. Eaton <jwe@octave.org> parents: 22204 diff changeset	54 return (Vsvd_driver == "gesvd"
6ca3acf5fad8 move some new numeric classes to namespace octave::math John W. Eaton <jwe@octave.org> parents: 22204 diff changeset	55 ? octave::math::svd<T>::Driver::GESVD
6ca3acf5fad8 move some new numeric classes to namespace octave::math John W. Eaton <jwe@octave.org> parents: 22204 diff changeset	56 : octave::math::svd<T>::Driver::GESDD);
21273 cbced1c09916 better use of templates for svd classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	57 }
10601 3ce0c530a9c9 implement svd_driver Jaroslav Hajek <highegg@gmail.com> parents: 10185 diff changeset	58
15039 e753177cde93 maint: Move non-dynamically linked functions from DLD-FUNCTIONS/ to corefcn/ directory Rik <rik@octave.org> parents: 14501 diff changeset	59 DEFUN (svd, args, nargout,
21966 112b20240c87 move docstrings in C++ files out of C strings and into comments John W. Eaton <jwe@octave.org> parents: 21724 diff changeset	60 doc: /* -- texinfo --
112b20240c87 move docstrings in C++ files out of C strings and into comments John W. Eaton <jwe@octave.org> parents: 21724 diff changeset	61 @deftypefn {} {@var{s} =} svd (@var{A})
112b20240c87 move docstrings in C++ files out of C strings and into comments John W. Eaton <jwe@octave.org> parents: 21724 diff changeset	62 @deftypefnx {} {[@var{U}, @var{S}, @var{V}] =} svd (@var{A})
112b20240c87 move docstrings in C++ files out of C strings and into comments John W. Eaton <jwe@octave.org> parents: 21724 diff changeset	63 @deftypefnx {} {[@var{U}, @var{S}, @var{V}] =} svd (@var{A}, @var{econ})
112b20240c87 move docstrings in C++ files out of C strings and into comments John W. Eaton <jwe@octave.org> parents: 21724 diff changeset	64 @cindex singular value decomposition
112b20240c87 move docstrings in C++ files out of C strings and into comments John W. Eaton <jwe@octave.org> parents: 21724 diff changeset	65 Compute the singular value decomposition of @var{A}
112b20240c87 move docstrings in C++ files out of C strings and into comments John W. Eaton <jwe@octave.org> parents: 21724 diff changeset	66 @tex
112b20240c87 move docstrings in C++ files out of C strings and into comments John W. Eaton <jwe@octave.org> parents: 21724 diff changeset	67 $$
112b20240c87 move docstrings in C++ files out of C strings and into comments John W. Eaton <jwe@octave.org> parents: 21724 diff changeset	68 A = U S V^{\dagger}
112b20240c87 move docstrings in C++ files out of C strings and into comments John W. Eaton <jwe@octave.org> parents: 21724 diff changeset	69 $$
112b20240c87 move docstrings in C++ files out of C strings and into comments John W. Eaton <jwe@octave.org> parents: 21724 diff changeset	70 @end tex
112b20240c87 move docstrings in C++ files out of C strings and into comments John W. Eaton <jwe@octave.org> parents: 21724 diff changeset	71 @ifnottex
112b20240c87 move docstrings in C++ files out of C strings and into comments John W. Eaton <jwe@octave.org> parents: 21724 diff changeset	72
112b20240c87 move docstrings in C++ files out of C strings and into comments John W. Eaton <jwe@octave.org> parents: 21724 diff changeset	73 @example
112b20240c87 move docstrings in C++ files out of C strings and into comments John W. Eaton <jwe@octave.org> parents: 21724 diff changeset	74 A = USV'
112b20240c87 move docstrings in C++ files out of C strings and into comments John W. Eaton <jwe@octave.org> parents: 21724 diff changeset	75 @end example
112b20240c87 move docstrings in C++ files out of C strings and into comments John W. Eaton <jwe@octave.org> parents: 21724 diff changeset	76
112b20240c87 move docstrings in C++ files out of C strings and into comments John W. Eaton <jwe@octave.org> parents: 21724 diff changeset	77 @end ifnottex
112b20240c87 move docstrings in C++ files out of C strings and into comments John W. Eaton <jwe@octave.org> parents: 21724 diff changeset	78
112b20240c87 move docstrings in C++ files out of C strings and into comments John W. Eaton <jwe@octave.org> parents: 21724 diff changeset	79 The function @code{svd} normally returns only the vector of singular values.
112b20240c87 move docstrings in C++ files out of C strings and into comments John W. Eaton <jwe@octave.org> parents: 21724 diff changeset	80 When called with three return values, it computes
112b20240c87 move docstrings in C++ files out of C strings and into comments John W. Eaton <jwe@octave.org> parents: 21724 diff changeset	81 @tex
112b20240c87 move docstrings in C++ files out of C strings and into comments John W. Eaton <jwe@octave.org> parents: 21724 diff changeset	82 $U$, $S$, and $V$.
112b20240c87 move docstrings in C++ files out of C strings and into comments John W. Eaton <jwe@octave.org> parents: 21724 diff changeset	83 @end tex
112b20240c87 move docstrings in C++ files out of C strings and into comments John W. Eaton <jwe@octave.org> parents: 21724 diff changeset	84 @ifnottex
112b20240c87 move docstrings in C++ files out of C strings and into comments John W. Eaton <jwe@octave.org> parents: 21724 diff changeset	85 @var{U}, @var{S}, and @var{V}.
112b20240c87 move docstrings in C++ files out of C strings and into comments John W. Eaton <jwe@octave.org> parents: 21724 diff changeset	86 @end ifnottex
112b20240c87 move docstrings in C++ files out of C strings and into comments John W. Eaton <jwe@octave.org> parents: 21724 diff changeset	87 For example,
112b20240c87 move docstrings in C++ files out of C strings and into comments John W. Eaton <jwe@octave.org> parents: 21724 diff changeset	88
112b20240c87 move docstrings in C++ files out of C strings and into comments John W. Eaton <jwe@octave.org> parents: 21724 diff changeset	89 @example
112b20240c87 move docstrings in C++ files out of C strings and into comments John W. Eaton <jwe@octave.org> parents: 21724 diff changeset	90 svd (hilb (3))
112b20240c87 move docstrings in C++ files out of C strings and into comments John W. Eaton <jwe@octave.org> parents: 21724 diff changeset	91 @end example
112b20240c87 move docstrings in C++ files out of C strings and into comments John W. Eaton <jwe@octave.org> parents: 21724 diff changeset	92
112b20240c87 move docstrings in C++ files out of C strings and into comments John W. Eaton <jwe@octave.org> parents: 21724 diff changeset	93 @noindent
112b20240c87 move docstrings in C++ files out of C strings and into comments John W. Eaton <jwe@octave.org> parents: 21724 diff changeset	94 returns
112b20240c87 move docstrings in C++ files out of C strings and into comments John W. Eaton <jwe@octave.org> parents: 21724 diff changeset	95
112b20240c87 move docstrings in C++ files out of C strings and into comments John W. Eaton <jwe@octave.org> parents: 21724 diff changeset	96 @example
112b20240c87 move docstrings in C++ files out of C strings and into comments John W. Eaton <jwe@octave.org> parents: 21724 diff changeset	97 @group
112b20240c87 move docstrings in C++ files out of C strings and into comments John W. Eaton <jwe@octave.org> parents: 21724 diff changeset	98 ans =
112b20240c87 move docstrings in C++ files out of C strings and into comments John W. Eaton <jwe@octave.org> parents: 21724 diff changeset	99
112b20240c87 move docstrings in C++ files out of C strings and into comments John W. Eaton <jwe@octave.org> parents: 21724 diff changeset	100 1.4083189
112b20240c87 move docstrings in C++ files out of C strings and into comments John W. Eaton <jwe@octave.org> parents: 21724 diff changeset	101 0.1223271
112b20240c87 move docstrings in C++ files out of C strings and into comments John W. Eaton <jwe@octave.org> parents: 21724 diff changeset	102 0.0026873
112b20240c87 move docstrings in C++ files out of C strings and into comments John W. Eaton <jwe@octave.org> parents: 21724 diff changeset	103 @end group
112b20240c87 move docstrings in C++ files out of C strings and into comments John W. Eaton <jwe@octave.org> parents: 21724 diff changeset	104 @end example
112b20240c87 move docstrings in C++ files out of C strings and into comments John W. Eaton <jwe@octave.org> parents: 21724 diff changeset	105
112b20240c87 move docstrings in C++ files out of C strings and into comments John W. Eaton <jwe@octave.org> parents: 21724 diff changeset	106 @noindent
112b20240c87 move docstrings in C++ files out of C strings and into comments John W. Eaton <jwe@octave.org> parents: 21724 diff changeset	107 and
112b20240c87 move docstrings in C++ files out of C strings and into comments John W. Eaton <jwe@octave.org> parents: 21724 diff changeset	108
112b20240c87 move docstrings in C++ files out of C strings and into comments John W. Eaton <jwe@octave.org> parents: 21724 diff changeset	109 @example
112b20240c87 move docstrings in C++ files out of C strings and into comments John W. Eaton <jwe@octave.org> parents: 21724 diff changeset	110 [u, s, v] = svd (hilb (3))
112b20240c87 move docstrings in C++ files out of C strings and into comments John W. Eaton <jwe@octave.org> parents: 21724 diff changeset	111 @end example
112b20240c87 move docstrings in C++ files out of C strings and into comments John W. Eaton <jwe@octave.org> parents: 21724 diff changeset	112
112b20240c87 move docstrings in C++ files out of C strings and into comments John W. Eaton <jwe@octave.org> parents: 21724 diff changeset	113 @noindent
112b20240c87 move docstrings in C++ files out of C strings and into comments John W. Eaton <jwe@octave.org> parents: 21724 diff changeset	114 returns
112b20240c87 move docstrings in C++ files out of C strings and into comments John W. Eaton <jwe@octave.org> parents: 21724 diff changeset	115
112b20240c87 move docstrings in C++ files out of C strings and into comments John W. Eaton <jwe@octave.org> parents: 21724 diff changeset	116 @example
112b20240c87 move docstrings in C++ files out of C strings and into comments John W. Eaton <jwe@octave.org> parents: 21724 diff changeset	117 @group
112b20240c87 move docstrings in C++ files out of C strings and into comments John W. Eaton <jwe@octave.org> parents: 21724 diff changeset	118 u =
112b20240c87 move docstrings in C++ files out of C strings and into comments John W. Eaton <jwe@octave.org> parents: 21724 diff changeset	119
112b20240c87 move docstrings in C++ files out of C strings and into comments John W. Eaton <jwe@octave.org> parents: 21724 diff changeset	120 -0.82704 0.54745 0.12766
112b20240c87 move docstrings in C++ files out of C strings and into comments John W. Eaton <jwe@octave.org> parents: 21724 diff changeset	121 -0.45986 -0.52829 -0.71375
112b20240c87 move docstrings in C++ files out of C strings and into comments John W. Eaton <jwe@octave.org> parents: 21724 diff changeset	122 -0.32330 -0.64901 0.68867
112b20240c87 move docstrings in C++ files out of C strings and into comments John W. Eaton <jwe@octave.org> parents: 21724 diff changeset	123
112b20240c87 move docstrings in C++ files out of C strings and into comments John W. Eaton <jwe@octave.org> parents: 21724 diff changeset	124 s =
112b20240c87 move docstrings in C++ files out of C strings and into comments John W. Eaton <jwe@octave.org> parents: 21724 diff changeset	125
112b20240c87 move docstrings in C++ files out of C strings and into comments John W. Eaton <jwe@octave.org> parents: 21724 diff changeset	126 1.40832 0.00000 0.00000
112b20240c87 move docstrings in C++ files out of C strings and into comments John W. Eaton <jwe@octave.org> parents: 21724 diff changeset	127 0.00000 0.12233 0.00000
112b20240c87 move docstrings in C++ files out of C strings and into comments John W. Eaton <jwe@octave.org> parents: 21724 diff changeset	128 0.00000 0.00000 0.00269
112b20240c87 move docstrings in C++ files out of C strings and into comments John W. Eaton <jwe@octave.org> parents: 21724 diff changeset	129
112b20240c87 move docstrings in C++ files out of C strings and into comments John W. Eaton <jwe@octave.org> parents: 21724 diff changeset	130 v =
112b20240c87 move docstrings in C++ files out of C strings and into comments John W. Eaton <jwe@octave.org> parents: 21724 diff changeset	131
112b20240c87 move docstrings in C++ files out of C strings and into comments John W. Eaton <jwe@octave.org> parents: 21724 diff changeset	132 -0.82704 0.54745 0.12766
112b20240c87 move docstrings in C++ files out of C strings and into comments John W. Eaton <jwe@octave.org> parents: 21724 diff changeset	133 -0.45986 -0.52829 -0.71375
112b20240c87 move docstrings in C++ files out of C strings and into comments John W. Eaton <jwe@octave.org> parents: 21724 diff changeset	134 -0.32330 -0.64901 0.68867
112b20240c87 move docstrings in C++ files out of C strings and into comments John W. Eaton <jwe@octave.org> parents: 21724 diff changeset	135 @end group
112b20240c87 move docstrings in C++ files out of C strings and into comments John W. Eaton <jwe@octave.org> parents: 21724 diff changeset	136 @end example
112b20240c87 move docstrings in C++ files out of C strings and into comments John W. Eaton <jwe@octave.org> parents: 21724 diff changeset	137
112b20240c87 move docstrings in C++ files out of C strings and into comments John W. Eaton <jwe@octave.org> parents: 21724 diff changeset	138 If given a second argument, @code{svd} returns an economy-sized
112b20240c87 move docstrings in C++ files out of C strings and into comments John W. Eaton <jwe@octave.org> parents: 21724 diff changeset	139 decomposition, eliminating the unnecessary rows or columns of @var{U} or
112b20240c87 move docstrings in C++ files out of C strings and into comments John W. Eaton <jwe@octave.org> parents: 21724 diff changeset	140 @var{V}.
112b20240c87 move docstrings in C++ files out of C strings and into comments John W. Eaton <jwe@octave.org> parents: 21724 diff changeset	141 @seealso{svd_driver, svds, eig, lu, chol, hess, qr, qz}
112b20240c87 move docstrings in C++ files out of C strings and into comments John W. Eaton <jwe@octave.org> parents: 21724 diff changeset	142 @end deftypefn */)
2928 295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe] jwe parents: diff changeset	143 {
295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe] jwe parents: diff changeset	144 int nargin = args.length ();
295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe] jwe parents: diff changeset	145
295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe] jwe parents: diff changeset	146 if (nargin < 1 \|\| nargin > 2 \|\| nargout == 2 \|\| nargout > 3)
20535 b70cc4bd8109 begin removal of global error_state variable John W. Eaton <jwe@octave.org> parents: 20172 diff changeset	147 print_usage ();
2928 295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe] jwe parents: diff changeset	148
295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe] jwe parents: diff changeset	149 octave_value arg = args(0);
295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe] jwe parents: diff changeset	150
10185 455759a5fcbe fix norm and svd on empty matrices Jaroslav Hajek <highegg@gmail.com> parents: 10155 diff changeset	151 if (arg.ndims () != 2)
20535 b70cc4bd8109 begin removal of global error_state variable John W. Eaton <jwe@octave.org> parents: 20172 diff changeset	152 error ("svd: A must be a 2-D matrix");
10185 455759a5fcbe fix norm and svd on empty matrices Jaroslav Hajek <highegg@gmail.com> parents: 10155 diff changeset	153
20939 b17fda023ca6 maint: Use new C++ archetype in more files. Rik <rik@octave.org> parents: 20873 diff changeset	154 octave_value_list retval;
b17fda023ca6 maint: Use new C++ archetype in more files. Rik <rik@octave.org> parents: 20873 diff changeset	155
7789 82be108cc558 First attempt at single precision tyeps David Bateman <dbateman@free.fr> parents: 7017 diff changeset	156 bool isfloat = arg.is_single_type ();
82be108cc558 First attempt at single precision tyeps David Bateman <dbateman@free.fr> parents: 7017 diff changeset	157
21273 cbced1c09916 better use of templates for svd classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	158 if (isfloat)
cbced1c09916 better use of templates for svd classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	159 {
cbced1c09916 better use of templates for svd classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	160 if (arg.is_real_type ())
cbced1c09916 better use of templates for svd classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	161 {
cbced1c09916 better use of templates for svd classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	162 FloatMatrix tmp = arg.float_matrix_value ();
10638 e1559a8a60b4 general mechanism for string enum variables Jaroslav Hajek <highegg@gmail.com> parents: 10601 diff changeset	163
21273 cbced1c09916 better use of templates for svd classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	164 if (tmp.any_element_is_inf_or_nan ())
cbced1c09916 better use of templates for svd classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	165 error ("svd: cannot take SVD of matrix containing Inf or NaN values");
cbced1c09916 better use of templates for svd classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	166
22317 6ca3acf5fad8 move some new numeric classes to namespace octave::math John W. Eaton <jwe@octave.org> parents: 22204 diff changeset	167 octave::math::svd<FloatMatrix> result
6ca3acf5fad8 move some new numeric classes to namespace octave::math John W. Eaton <jwe@octave.org> parents: 22204 diff changeset	168 (tmp, svd_type<FloatMatrix> (nargin, nargout),
6ca3acf5fad8 move some new numeric classes to namespace octave::math John W. Eaton <jwe@octave.org> parents: 22204 diff changeset	169 svd_driver<FloatMatrix> ());
21273 cbced1c09916 better use of templates for svd classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	170
cbced1c09916 better use of templates for svd classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	171 FloatDiagMatrix sigma = result.singular_values ();
20535 b70cc4bd8109 begin removal of global error_state variable John W. Eaton <jwe@octave.org> parents: 20172 diff changeset	172
21273 cbced1c09916 better use of templates for svd classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	173 if (nargout == 0 \|\| nargout == 1)
cbced1c09916 better use of templates for svd classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	174 retval(0) = sigma.extract_diag ();
cbced1c09916 better use of templates for svd classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	175 else
cbced1c09916 better use of templates for svd classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	176 retval = ovl (result.left_singular_matrix (),
cbced1c09916 better use of templates for svd classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	177 sigma,
cbced1c09916 better use of templates for svd classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	178 result.right_singular_matrix ());
10154 40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9758 diff changeset	179 }
21273 cbced1c09916 better use of templates for svd classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	180 else if (arg.is_complex_type ())
10154 40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9758 diff changeset	181 {
21273 cbced1c09916 better use of templates for svd classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	182 FloatComplexMatrix ctmp = arg.float_complex_matrix_value ();
cbced1c09916 better use of templates for svd classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	183
cbced1c09916 better use of templates for svd classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	184 if (ctmp.any_element_is_inf_or_nan ())
cbced1c09916 better use of templates for svd classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	185 error ("svd: cannot take SVD of matrix containing Inf or NaN values");
cbced1c09916 better use of templates for svd classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	186
22317 6ca3acf5fad8 move some new numeric classes to namespace octave::math John W. Eaton <jwe@octave.org> parents: 22204 diff changeset	187 octave::math::svd<FloatComplexMatrix> result
6ca3acf5fad8 move some new numeric classes to namespace octave::math John W. Eaton <jwe@octave.org> parents: 22204 diff changeset	188 (ctmp, svd_type<FloatComplexMatrix> (nargin, nargout),
6ca3acf5fad8 move some new numeric classes to namespace octave::math John W. Eaton <jwe@octave.org> parents: 22204 diff changeset	189 svd_driver<FloatComplexMatrix> ());
20535 b70cc4bd8109 begin removal of global error_state variable John W. Eaton <jwe@octave.org> parents: 20172 diff changeset	190
21273 cbced1c09916 better use of templates for svd classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	191 FloatDiagMatrix sigma = result.singular_values ();
20535 b70cc4bd8109 begin removal of global error_state variable John W. Eaton <jwe@octave.org> parents: 20172 diff changeset	192
21273 cbced1c09916 better use of templates for svd classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	193 if (nargout == 0 \|\| nargout == 1)
cbced1c09916 better use of templates for svd classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	194 retval(0) = sigma.extract_diag ();
cbced1c09916 better use of templates for svd classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	195 else
cbced1c09916 better use of templates for svd classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	196 retval = ovl (result.left_singular_matrix (),
cbced1c09916 better use of templates for svd classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	197 sigma,
cbced1c09916 better use of templates for svd classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	198 result.right_singular_matrix ());
10154 40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9758 diff changeset	199 }
2928 295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe] jwe parents: diff changeset	200 }
295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe] jwe parents: diff changeset	201 else
295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe] jwe parents: diff changeset	202 {
21273 cbced1c09916 better use of templates for svd classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	203 if (arg.is_real_type ())
10154 40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9758 diff changeset	204 {
21273 cbced1c09916 better use of templates for svd classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	205 Matrix tmp = arg.matrix_value ();
7789 82be108cc558 First attempt at single precision tyeps David Bateman <dbateman@free.fr> parents: 7017 diff changeset	206
21273 cbced1c09916 better use of templates for svd classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	207 if (tmp.any_element_is_inf_or_nan ())
cbced1c09916 better use of templates for svd classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	208 error ("svd: cannot take SVD of matrix containing Inf or NaN values");
4478 7afd4bf05aa8 [project @ 2003-07-30 19:15:31 by jwe] jwe parents: 3548 diff changeset	209
22317 6ca3acf5fad8 move some new numeric classes to namespace octave::math John W. Eaton <jwe@octave.org> parents: 22204 diff changeset	210 octave::math::svd<Matrix> result
6ca3acf5fad8 move some new numeric classes to namespace octave::math John W. Eaton <jwe@octave.org> parents: 22204 diff changeset	211 (tmp, svd_type<Matrix> (nargin, nargout),
6ca3acf5fad8 move some new numeric classes to namespace octave::math John W. Eaton <jwe@octave.org> parents: 22204 diff changeset	212 svd_driver<Matrix> ());
20535 b70cc4bd8109 begin removal of global error_state variable John W. Eaton <jwe@octave.org> parents: 20172 diff changeset	213
21273 cbced1c09916 better use of templates for svd classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	214 DiagMatrix sigma = result.singular_values ();
4478 7afd4bf05aa8 [project @ 2003-07-30 19:15:31 by jwe] jwe parents: 3548 diff changeset	215
21273 cbced1c09916 better use of templates for svd classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	216 if (nargout == 0 \|\| nargout == 1)
cbced1c09916 better use of templates for svd classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	217 retval(0) = sigma.extract_diag ();
cbced1c09916 better use of templates for svd classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	218 else
cbced1c09916 better use of templates for svd classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	219 retval = ovl (result.left_singular_matrix (),
cbced1c09916 better use of templates for svd classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	220 sigma,
cbced1c09916 better use of templates for svd classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	221 result.right_singular_matrix ());
cbced1c09916 better use of templates for svd classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	222 }
cbced1c09916 better use of templates for svd classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	223 else if (arg.is_complex_type ())
cbced1c09916 better use of templates for svd classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	224 {
cbced1c09916 better use of templates for svd classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	225 ComplexMatrix ctmp = arg.complex_matrix_value ();
4478 7afd4bf05aa8 [project @ 2003-07-30 19:15:31 by jwe] jwe parents: 3548 diff changeset	226
21273 cbced1c09916 better use of templates for svd classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	227 if (ctmp.any_element_is_inf_or_nan ())
cbced1c09916 better use of templates for svd classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	228 error ("svd: cannot take SVD of matrix containing Inf or NaN values");
4478 7afd4bf05aa8 [project @ 2003-07-30 19:15:31 by jwe] jwe parents: 3548 diff changeset	229
22317 6ca3acf5fad8 move some new numeric classes to namespace octave::math John W. Eaton <jwe@octave.org> parents: 22204 diff changeset	230 octave::math::svd<ComplexMatrix> result
6ca3acf5fad8 move some new numeric classes to namespace octave::math John W. Eaton <jwe@octave.org> parents: 22204 diff changeset	231 (ctmp, svd_type<ComplexMatrix> (nargin, nargout),
6ca3acf5fad8 move some new numeric classes to namespace octave::math John W. Eaton <jwe@octave.org> parents: 22204 diff changeset	232 svd_driver<ComplexMatrix> ());
4478 7afd4bf05aa8 [project @ 2003-07-30 19:15:31 by jwe] jwe parents: 3548 diff changeset	233
21273 cbced1c09916 better use of templates for svd classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	234 DiagMatrix sigma = result.singular_values ();
cbced1c09916 better use of templates for svd classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	235
cbced1c09916 better use of templates for svd classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	236 if (nargout == 0 \|\| nargout == 1)
cbced1c09916 better use of templates for svd classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	237 retval(0) = sigma.extract_diag ();
cbced1c09916 better use of templates for svd classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	238 else
cbced1c09916 better use of templates for svd classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	239 retval = ovl (result.left_singular_matrix (),
cbced1c09916 better use of templates for svd classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	240 sigma,
cbced1c09916 better use of templates for svd classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	241 result.right_singular_matrix ());
10154 40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9758 diff changeset	242 }
4478 7afd4bf05aa8 [project @ 2003-07-30 19:15:31 by jwe] jwe parents: 3548 diff changeset	243 else
21273 cbced1c09916 better use of templates for svd classes John W. Eaton <jwe@octave.org> parents: 21200 diff changeset	244 err_wrong_type_arg ("svd", arg);
2928 295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe] jwe parents: diff changeset	245 }
295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe] jwe parents: diff changeset	246
295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe] jwe parents: diff changeset	247 return retval;
295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe] jwe parents: diff changeset	248 }
295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe] jwe parents: diff changeset	249
295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe] jwe parents: diff changeset	250 /*
14501 60e5cf354d80 Update %!tests in DLD-FUNCTIONS/ directory with Octave coding conventions. Rik <octave@nomad.inbox5.com> parents: 14138 diff changeset	251 %!assert (svd ([1, 2; 2, 1]), [3; 1], sqrt (eps))
7814 87865ed7405f Second set of single precision test code and fix of resulting bugs David Bateman <dbateman@free.fr> parents: 7789 diff changeset	252
87865ed7405f Second set of single precision test code and fix of resulting bugs David Bateman <dbateman@free.fr> parents: 7789 diff changeset	253 %!test
22592 ee0df00e12d6 fix complex svd (bug #49232) John W. Eaton <jwe@octave.org> parents: 22407 diff changeset	254 a = [1, 2; 3, 4] + [5, 6; 7, 8]*i;
ee0df00e12d6 fix complex svd (bug #49232) John W. Eaton <jwe@octave.org> parents: 22407 diff changeset	255 [u,s,v] = svd (a);
ee0df00e12d6 fix complex svd (bug #49232) John W. Eaton <jwe@octave.org> parents: 22407 diff changeset	256 assert (a, u * s * v', 128 * eps);
ee0df00e12d6 fix complex svd (bug #49232) John W. Eaton <jwe@octave.org> parents: 22407 diff changeset	257
ee0df00e12d6 fix complex svd (bug #49232) John W. Eaton <jwe@octave.org> parents: 22407 diff changeset	258
ee0df00e12d6 fix complex svd (bug #49232) John W. Eaton <jwe@octave.org> parents: 22407 diff changeset	259 %!test
7814 87865ed7405f Second set of single precision test code and fix of resulting bugs David Bateman <dbateman@free.fr> parents: 7789 diff changeset	260 %! [u, s, v] = svd ([1, 2; 2, 1]);
87865ed7405f Second set of single precision test code and fix of resulting bugs David Bateman <dbateman@free.fr> parents: 7789 diff changeset	261 %! x = 1 / sqrt (2);
87865ed7405f Second set of single precision test code and fix of resulting bugs David Bateman <dbateman@free.fr> parents: 7789 diff changeset	262 %! assert (u, [-x, -x; -x, x], sqrt (eps));
87865ed7405f Second set of single precision test code and fix of resulting bugs David Bateman <dbateman@free.fr> parents: 7789 diff changeset	263 %! assert (s, [3, 0; 0, 1], sqrt (eps));
87865ed7405f Second set of single precision test code and fix of resulting bugs David Bateman <dbateman@free.fr> parents: 7789 diff changeset	264 %! assert (v, [-x, x; -x, -x], sqrt (eps));
87865ed7405f Second set of single precision test code and fix of resulting bugs David Bateman <dbateman@free.fr> parents: 7789 diff changeset	265
87865ed7405f Second set of single precision test code and fix of resulting bugs David Bateman <dbateman@free.fr> parents: 7789 diff changeset	266 %!test
87865ed7405f Second set of single precision test code and fix of resulting bugs David Bateman <dbateman@free.fr> parents: 7789 diff changeset	267 %! a = [1, 2, 3; 4, 5, 6];
87865ed7405f Second set of single precision test code and fix of resulting bugs David Bateman <dbateman@free.fr> parents: 7789 diff changeset	268 %! [u, s, v] = svd (a);
87865ed7405f Second set of single precision test code and fix of resulting bugs David Bateman <dbateman@free.fr> parents: 7789 diff changeset	269 %! assert (u * s * v', a, sqrt (eps));
87865ed7405f Second set of single precision test code and fix of resulting bugs David Bateman <dbateman@free.fr> parents: 7789 diff changeset	270
87865ed7405f Second set of single precision test code and fix of resulting bugs David Bateman <dbateman@free.fr> parents: 7789 diff changeset	271 %!test
87865ed7405f Second set of single precision test code and fix of resulting bugs David Bateman <dbateman@free.fr> parents: 7789 diff changeset	272 %! a = [1, 2; 3, 4; 5, 6];
87865ed7405f Second set of single precision test code and fix of resulting bugs David Bateman <dbateman@free.fr> parents: 7789 diff changeset	273 %! [u, s, v] = svd (a);
87865ed7405f Second set of single precision test code and fix of resulting bugs David Bateman <dbateman@free.fr> parents: 7789 diff changeset	274 %! assert (u * s * v', a, sqrt (eps));
87865ed7405f Second set of single precision test code and fix of resulting bugs David Bateman <dbateman@free.fr> parents: 7789 diff changeset	275
87865ed7405f Second set of single precision test code and fix of resulting bugs David Bateman <dbateman@free.fr> parents: 7789 diff changeset	276 %!test
87865ed7405f Second set of single precision test code and fix of resulting bugs David Bateman <dbateman@free.fr> parents: 7789 diff changeset	277 %! a = [1, 2, 3; 4, 5, 6];
87865ed7405f Second set of single precision test code and fix of resulting bugs David Bateman <dbateman@free.fr> parents: 7789 diff changeset	278 %! [u, s, v] = svd (a, 1);
87865ed7405f Second set of single precision test code and fix of resulting bugs David Bateman <dbateman@free.fr> parents: 7789 diff changeset	279 %! assert (u * s * v', a, sqrt (eps));
87865ed7405f Second set of single precision test code and fix of resulting bugs David Bateman <dbateman@free.fr> parents: 7789 diff changeset	280
87865ed7405f Second set of single precision test code and fix of resulting bugs David Bateman <dbateman@free.fr> parents: 7789 diff changeset	281 %!test
87865ed7405f Second set of single precision test code and fix of resulting bugs David Bateman <dbateman@free.fr> parents: 7789 diff changeset	282 %! a = [1, 2; 3, 4; 5, 6];
87865ed7405f Second set of single precision test code and fix of resulting bugs David Bateman <dbateman@free.fr> parents: 7789 diff changeset	283 %! [u, s, v] = svd (a, 1);
87865ed7405f Second set of single precision test code and fix of resulting bugs David Bateman <dbateman@free.fr> parents: 7789 diff changeset	284 %! assert (u * s * v', a, sqrt (eps));
87865ed7405f Second set of single precision test code and fix of resulting bugs David Bateman <dbateman@free.fr> parents: 7789 diff changeset	285
14501 60e5cf354d80 Update %!tests in DLD-FUNCTIONS/ directory with Octave coding conventions. Rik <octave@nomad.inbox5.com> parents: 14138 diff changeset	286 %!assert (svd (single ([1, 2; 2, 1])), single ([3; 1]), sqrt (eps ("single")))
7814 87865ed7405f Second set of single precision test code and fix of resulting bugs David Bateman <dbateman@free.fr> parents: 7789 diff changeset	287
87865ed7405f Second set of single precision test code and fix of resulting bugs David Bateman <dbateman@free.fr> parents: 7789 diff changeset	288 %!test
14501 60e5cf354d80 Update %!tests in DLD-FUNCTIONS/ directory with Octave coding conventions. Rik <octave@nomad.inbox5.com> parents: 14138 diff changeset	289 %! [u, s, v] = svd (single ([1, 2; 2, 1]));
7814 87865ed7405f Second set of single precision test code and fix of resulting bugs David Bateman <dbateman@free.fr> parents: 7789 diff changeset	290 %! x = single (1 / sqrt (2));
14501 60e5cf354d80 Update %!tests in DLD-FUNCTIONS/ directory with Octave coding conventions. Rik <octave@nomad.inbox5.com> parents: 14138 diff changeset	291 %! assert (u, [-x, -x; -x, x], sqrt (eps ("single")));
60e5cf354d80 Update %!tests in DLD-FUNCTIONS/ directory with Octave coding conventions. Rik <octave@nomad.inbox5.com> parents: 14138 diff changeset	292 %! assert (s, single ([3, 0; 0, 1]), sqrt (eps ("single")));
60e5cf354d80 Update %!tests in DLD-FUNCTIONS/ directory with Octave coding conventions. Rik <octave@nomad.inbox5.com> parents: 14138 diff changeset	293 %! assert (v, [-x, x; -x, -x], sqrt (eps ("single")));
7814 87865ed7405f Second set of single precision test code and fix of resulting bugs David Bateman <dbateman@free.fr> parents: 7789 diff changeset	294
87865ed7405f Second set of single precision test code and fix of resulting bugs David Bateman <dbateman@free.fr> parents: 7789 diff changeset	295 %!test
14501 60e5cf354d80 Update %!tests in DLD-FUNCTIONS/ directory with Octave coding conventions. Rik <octave@nomad.inbox5.com> parents: 14138 diff changeset	296 %! a = single ([1, 2, 3; 4, 5, 6]);
7814 87865ed7405f Second set of single precision test code and fix of resulting bugs David Bateman <dbateman@free.fr> parents: 7789 diff changeset	297 %! [u, s, v] = svd (a);
14501 60e5cf354d80 Update %!tests in DLD-FUNCTIONS/ directory with Octave coding conventions. Rik <octave@nomad.inbox5.com> parents: 14138 diff changeset	298 %! assert (u * s * v', a, sqrt (eps ("single")));
7814 87865ed7405f Second set of single precision test code and fix of resulting bugs David Bateman <dbateman@free.fr> parents: 7789 diff changeset	299
87865ed7405f Second set of single precision test code and fix of resulting bugs David Bateman <dbateman@free.fr> parents: 7789 diff changeset	300 %!test
14501 60e5cf354d80 Update %!tests in DLD-FUNCTIONS/ directory with Octave coding conventions. Rik <octave@nomad.inbox5.com> parents: 14138 diff changeset	301 %! a = single ([1, 2; 3, 4; 5, 6]);
7814 87865ed7405f Second set of single precision test code and fix of resulting bugs David Bateman <dbateman@free.fr> parents: 7789 diff changeset	302 %! [u, s, v] = svd (a);
14501 60e5cf354d80 Update %!tests in DLD-FUNCTIONS/ directory with Octave coding conventions. Rik <octave@nomad.inbox5.com> parents: 14138 diff changeset	303 %! assert (u * s * v', a, sqrt (eps ("single")));
7814 87865ed7405f Second set of single precision test code and fix of resulting bugs David Bateman <dbateman@free.fr> parents: 7789 diff changeset	304
87865ed7405f Second set of single precision test code and fix of resulting bugs David Bateman <dbateman@free.fr> parents: 7789 diff changeset	305 %!test
14501 60e5cf354d80 Update %!tests in DLD-FUNCTIONS/ directory with Octave coding conventions. Rik <octave@nomad.inbox5.com> parents: 14138 diff changeset	306 %! a = single ([1, 2, 3; 4, 5, 6]);
7814 87865ed7405f Second set of single precision test code and fix of resulting bugs David Bateman <dbateman@free.fr> parents: 7789 diff changeset	307 %! [u, s, v] = svd (a, 1);
14501 60e5cf354d80 Update %!tests in DLD-FUNCTIONS/ directory with Octave coding conventions. Rik <octave@nomad.inbox5.com> parents: 14138 diff changeset	308 %! assert (u * s * v', a, sqrt (eps ("single")));
7814 87865ed7405f Second set of single precision test code and fix of resulting bugs David Bateman <dbateman@free.fr> parents: 7789 diff changeset	309
87865ed7405f Second set of single precision test code and fix of resulting bugs David Bateman <dbateman@free.fr> parents: 7789 diff changeset	310 %!test
14501 60e5cf354d80 Update %!tests in DLD-FUNCTIONS/ directory with Octave coding conventions. Rik <octave@nomad.inbox5.com> parents: 14138 diff changeset	311 %! a = single ([1, 2; 3, 4; 5, 6]);
7814 87865ed7405f Second set of single precision test code and fix of resulting bugs David Bateman <dbateman@free.fr> parents: 7789 diff changeset	312 %! [u, s, v] = svd (a, 1);
14501 60e5cf354d80 Update %!tests in DLD-FUNCTIONS/ directory with Octave coding conventions. Rik <octave@nomad.inbox5.com> parents: 14138 diff changeset	313 %! assert (u * s * v', a, sqrt (eps ("single")));
7814 87865ed7405f Second set of single precision test code and fix of resulting bugs David Bateman <dbateman@free.fr> parents: 7789 diff changeset	314
10185 455759a5fcbe fix norm and svd on empty matrices Jaroslav Hajek <highegg@gmail.com> parents: 10155 diff changeset	315 %!test
455759a5fcbe fix norm and svd on empty matrices Jaroslav Hajek <highegg@gmail.com> parents: 10155 diff changeset	316 %! a = zeros (0, 5);
455759a5fcbe fix norm and svd on empty matrices Jaroslav Hajek <highegg@gmail.com> parents: 10155 diff changeset	317 %! [u, s, v] = svd (a);
455759a5fcbe fix norm and svd on empty matrices Jaroslav Hajek <highegg@gmail.com> parents: 10155 diff changeset	318 %! assert (size (u), [0, 0]);
455759a5fcbe fix norm and svd on empty matrices Jaroslav Hajek <highegg@gmail.com> parents: 10155 diff changeset	319 %! assert (size (s), [0, 5]);
455759a5fcbe fix norm and svd on empty matrices Jaroslav Hajek <highegg@gmail.com> parents: 10155 diff changeset	320 %! assert (size (v), [5, 5]);
455759a5fcbe fix norm and svd on empty matrices Jaroslav Hajek <highegg@gmail.com> parents: 10155 diff changeset	321
455759a5fcbe fix norm and svd on empty matrices Jaroslav Hajek <highegg@gmail.com> parents: 10155 diff changeset	322 %!test
455759a5fcbe fix norm and svd on empty matrices Jaroslav Hajek <highegg@gmail.com> parents: 10155 diff changeset	323 %! a = zeros (5, 0);
455759a5fcbe fix norm and svd on empty matrices Jaroslav Hajek <highegg@gmail.com> parents: 10155 diff changeset	324 %! [u, s, v] = svd (a, 1);
455759a5fcbe fix norm and svd on empty matrices Jaroslav Hajek <highegg@gmail.com> parents: 10155 diff changeset	325 %! assert (size (u), [5, 0]);
455759a5fcbe fix norm and svd on empty matrices Jaroslav Hajek <highegg@gmail.com> parents: 10155 diff changeset	326 %! assert (size (s), [0, 0]);
455759a5fcbe fix norm and svd on empty matrices Jaroslav Hajek <highegg@gmail.com> parents: 10155 diff changeset	327 %! assert (size (v), [0, 0]);
455759a5fcbe fix norm and svd on empty matrices Jaroslav Hajek <highegg@gmail.com> parents: 10155 diff changeset	328
14501 60e5cf354d80 Update %!tests in DLD-FUNCTIONS/ directory with Octave coding conventions. Rik <octave@nomad.inbox5.com> parents: 14138 diff changeset	329 %!error svd ()
60e5cf354d80 Update %!tests in DLD-FUNCTIONS/ directory with Octave coding conventions. Rik <octave@nomad.inbox5.com> parents: 14138 diff changeset	330 %!error svd ([1, 2; 4, 5], 2, 3)
60e5cf354d80 Update %!tests in DLD-FUNCTIONS/ directory with Octave coding conventions. Rik <octave@nomad.inbox5.com> parents: 14138 diff changeset	331 %!error [u, v] = svd ([1, 2; 3, 4])
2928 295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe] jwe parents: diff changeset	332 */
10601 3ce0c530a9c9 implement svd_driver Jaroslav Hajek <highegg@gmail.com> parents: 10185 diff changeset	333
15039 e753177cde93 maint: Move non-dynamically linked functions from DLD-FUNCTIONS/ to corefcn/ directory Rik <rik@octave.org> parents: 14501 diff changeset	334 DEFUN (svd_driver, args, nargout,
21966 112b20240c87 move docstrings in C++ files out of C strings and into comments John W. Eaton <jwe@octave.org> parents: 21724 diff changeset	335 doc: /* -- texinfo --
112b20240c87 move docstrings in C++ files out of C strings and into comments John W. Eaton <jwe@octave.org> parents: 21724 diff changeset	336 @deftypefn {} {@var{val} =} svd_driver ()
112b20240c87 move docstrings in C++ files out of C strings and into comments John W. Eaton <jwe@octave.org> parents: 21724 diff changeset	337 @deftypefnx {} {@var{old_val} =} svd_driver (@var{new_val})
112b20240c87 move docstrings in C++ files out of C strings and into comments John W. Eaton <jwe@octave.org> parents: 21724 diff changeset	338 @deftypefnx {} {} svd_driver (@var{new_val}, "local")
112b20240c87 move docstrings in C++ files out of C strings and into comments John W. Eaton <jwe@octave.org> parents: 21724 diff changeset	339 Query or set the underlying @sc{lapack} driver used by @code{svd}.
112b20240c87 move docstrings in C++ files out of C strings and into comments John W. Eaton <jwe@octave.org> parents: 21724 diff changeset	340
112b20240c87 move docstrings in C++ files out of C strings and into comments John W. Eaton <jwe@octave.org> parents: 21724 diff changeset	341 Currently recognized values are @qcode{"gesvd"} and @qcode{"gesdd"}.
112b20240c87 move docstrings in C++ files out of C strings and into comments John W. Eaton <jwe@octave.org> parents: 21724 diff changeset	342 The default is @qcode{"gesvd"}.
112b20240c87 move docstrings in C++ files out of C strings and into comments John W. Eaton <jwe@octave.org> parents: 21724 diff changeset	343
112b20240c87 move docstrings in C++ files out of C strings and into comments John W. Eaton <jwe@octave.org> parents: 21724 diff changeset	344 When called from inside a function with the @qcode{"local"} option, the
112b20240c87 move docstrings in C++ files out of C strings and into comments John W. Eaton <jwe@octave.org> parents: 21724 diff changeset	345 variable is changed locally for the function and any subroutines it calls.
112b20240c87 move docstrings in C++ files out of C strings and into comments John W. Eaton <jwe@octave.org> parents: 21724 diff changeset	346 The original variable value is restored when exiting the function.
112b20240c87 move docstrings in C++ files out of C strings and into comments John W. Eaton <jwe@octave.org> parents: 21724 diff changeset	347 @seealso{svd}
112b20240c87 move docstrings in C++ files out of C strings and into comments John W. Eaton <jwe@octave.org> parents: 21724 diff changeset	348 @end deftypefn */)
10601 3ce0c530a9c9 implement svd_driver Jaroslav Hajek <highegg@gmail.com> parents: 10185 diff changeset	349 {
10640 5c594472f75e determine string enum length by trailing null rather than sizeof Jaroslav Hajek <highegg@gmail.com> parents: 10638 diff changeset	350 static const char *driver_names[] = { "gesvd", "gesdd", 0 };
10601 3ce0c530a9c9 implement svd_driver Jaroslav Hajek <highegg@gmail.com> parents: 10185 diff changeset	351
10638 e1559a8a60b4 general mechanism for string enum variables Jaroslav Hajek <highegg@gmail.com> parents: 10601 diff changeset	352 return SET_INTERNAL_VARIABLE_CHOICES (svd_driver, driver_names);
10601 3ce0c530a9c9 implement svd_driver Jaroslav Hajek <highegg@gmail.com> parents: 10185 diff changeset	353 }
15887 8ced82e96b48 Fix segfaults with gesdd driver for svd (bug #37998). Rik <rik@octave.org> parents: 14138 diff changeset	354
8ced82e96b48 Fix segfaults with gesdd driver for svd (bug #37998). Rik <rik@octave.org> parents: 14138 diff changeset	355 /*
8ced82e96b48 Fix segfaults with gesdd driver for svd (bug #37998). Rik <rik@octave.org> parents: 14138 diff changeset	356 %!test
8ced82e96b48 Fix segfaults with gesdd driver for svd (bug #37998). Rik <rik@octave.org> parents: 14138 diff changeset	357 %! A = [1+1i, 1-1i, 0; 0, 2, 0; 1i, 1i, 1+2i];
8ced82e96b48 Fix segfaults with gesdd driver for svd (bug #37998). Rik <rik@octave.org> parents: 14138 diff changeset	358 %! old_driver = svd_driver ("gesvd");
8ced82e96b48 Fix segfaults with gesdd driver for svd (bug #37998). Rik <rik@octave.org> parents: 14138 diff changeset	359 %! [U1, S1, V1] = svd (A);
8ced82e96b48 Fix segfaults with gesdd driver for svd (bug #37998). Rik <rik@octave.org> parents: 14138 diff changeset	360 %! svd_driver ("gesdd");
8ced82e96b48 Fix segfaults with gesdd driver for svd (bug #37998). Rik <rik@octave.org> parents: 14138 diff changeset	361 %! [U2, S2, V2] = svd (A);
8ced82e96b48 Fix segfaults with gesdd driver for svd (bug #37998). Rik <rik@octave.org> parents: 14138 diff changeset	362 %! assert (U1, U2, 5*eps);
8ced82e96b48 Fix segfaults with gesdd driver for svd (bug #37998). Rik <rik@octave.org> parents: 14138 diff changeset	363 %! assert (S1, S2, 5*eps);
8ced82e96b48 Fix segfaults with gesdd driver for svd (bug #37998). Rik <rik@octave.org> parents: 14138 diff changeset	364 %! assert (V1, V2, 5*eps);
8ced82e96b48 Fix segfaults with gesdd driver for svd (bug #37998). Rik <rik@octave.org> parents: 14138 diff changeset	365 %! svd_driver (old_driver);
8ced82e96b48 Fix segfaults with gesdd driver for svd (bug #37998). Rik <rik@octave.org> parents: 14138 diff changeset	366 */
22407 34ce5be04942 maint: Style check C++ code in libinterp/. Rik <rik@octave.org> parents: 22323 diff changeset	367

Mercurial > octave

annotate libinterp/corefcn/svd.cc @ 22592:ee0df00e12d6 stable