Mercurial > octave-libgccjit

annotate src/DLD-FUNCTIONS/pinv.cc @ 8840:c690e3772583

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
support diagonal matrices in pinv
author Jaroslav Hajek <highegg@gmail.com>
date Mon, 23 Feb 2009 14:54:56 +0100
parents 82be108cc558
children a2878ba31a9e
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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
7017
a1dbe9d80eee [project @ 2007-10-12 21:27:11 by jwe]
jwe
parents: 7016
diff changeset
3 Copyright (C) 1996, 1997, 1999, 2002, 2005, 2006, 2007 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: 5823
diff changeset
9 Free Software Foundation; either version 3 of the License, or (at your
93c65f2a5668 [project @ 2007-10-12 06:40:56 by jwe]
jwe
parents: 5823
diff changeset
10 option) any later version.
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: 5823
diff changeset
18 along with Octave; see the file COPYING. If not, see
93c65f2a5668 [project @ 2007-10-12 06:40:56 by jwe]
jwe
parents: 5823
diff changeset
19 <http://www.gnu.org/licenses/>.
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
295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe]
jwe
parents:
diff changeset
23 #ifdef HAVE_CONFIG_H
295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe]
jwe
parents:
diff changeset
24 #include <config.h>
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
295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe]
jwe
parents:
diff changeset
27 #include "defun-dld.h"
295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe]
jwe
parents:
diff changeset
28 #include "error.h"
295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe]
jwe
parents:
diff changeset
29 #include "gripes.h"
295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe]
jwe
parents:
diff changeset
30 #include "oct-obj.h"
295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe]
jwe
parents:
diff changeset
31 #include "utils.h"
8840
c690e3772583 support diagonal matrices in pinv
Jaroslav Hajek <highegg@gmail.com>
parents: 7789
diff changeset
32 #include "ops.h"
c690e3772583 support diagonal matrices in pinv
Jaroslav Hajek <highegg@gmail.com>
parents: 7789
diff changeset
33 #include "ov-re-diag.h"
c690e3772583 support diagonal matrices in pinv
Jaroslav Hajek <highegg@gmail.com>
parents: 7789
diff changeset
34 #include "ov-cx-diag.h"
c690e3772583 support diagonal matrices in pinv
Jaroslav Hajek <highegg@gmail.com>
parents: 7789
diff changeset
35 #include "ov-flt-re-diag.h"
c690e3772583 support diagonal matrices in pinv
Jaroslav Hajek <highegg@gmail.com>
parents: 7789
diff changeset
36 #include "ov-flt-cx-diag.h"
c690e3772583 support diagonal matrices in pinv
Jaroslav Hajek <highegg@gmail.com>
parents: 7789
diff changeset
37 #include "ov-perm.h"
c690e3772583 support diagonal matrices in pinv
Jaroslav Hajek <highegg@gmail.com>
parents: 7789
diff changeset
38 #include "ov-flt-perm.h"
2928
295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe]
jwe
parents:
diff changeset
39
295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe]
jwe
parents:
diff changeset
40 DEFUN_DLD (pinv, args, ,
3365
7ed630f7b7be [project @ 1999-11-20 03:11:17 by jwe]
jwe
parents: 3014
diff changeset
41 "-*- texinfo -*-\n\
3372
f16c2ce14886 [project @ 1999-11-23 19:07:09 by jwe]
jwe
parents: 3365
diff changeset
42 @deftypefn {Loadable Function} {} pinv (@var{x}, @var{tol})\n\
f16c2ce14886 [project @ 1999-11-23 19:07:09 by jwe]
jwe
parents: 3365
diff changeset
43 Return the pseudoinverse of @var{x}. Singular values less than\n\
f16c2ce14886 [project @ 1999-11-23 19:07:09 by jwe]
jwe
parents: 3365
diff changeset
44 @var{tol} are ignored. \n\
f16c2ce14886 [project @ 1999-11-23 19:07:09 by jwe]
jwe
parents: 3365
diff changeset
45 \n\
f16c2ce14886 [project @ 1999-11-23 19:07:09 by jwe]
jwe
parents: 3365
diff changeset
46 If the second argument is omitted, it is assumed that\n\
3365
7ed630f7b7be [project @ 1999-11-20 03:11:17 by jwe]
jwe
parents: 3014
diff changeset
47 \n\
7ed630f7b7be [project @ 1999-11-20 03:11:17 by jwe]
jwe
parents: 3014
diff changeset
48 @example\n\
3372
f16c2ce14886 [project @ 1999-11-23 19:07:09 by jwe]
jwe
parents: 3365
diff changeset
49 tol = max (size (@var{x})) * sigma_max (@var{x}) * eps,\n\
3365
7ed630f7b7be [project @ 1999-11-20 03:11:17 by jwe]
jwe
parents: 3014
diff changeset
50 @end example\n\
3372
f16c2ce14886 [project @ 1999-11-23 19:07:09 by jwe]
jwe
parents: 3365
diff changeset
51 \n\
f16c2ce14886 [project @ 1999-11-23 19:07:09 by jwe]
jwe
parents: 3365
diff changeset
52 @noindent\n\
f16c2ce14886 [project @ 1999-11-23 19:07:09 by jwe]
jwe
parents: 3365
diff changeset
53 where @code{sigma_max (@var{x})} is the maximal singular value of @var{x}.\n\
3365
7ed630f7b7be [project @ 1999-11-20 03:11:17 by jwe]
jwe
parents: 3014
diff changeset
54 @end deftypefn")
2928
295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe]
jwe
parents:
diff changeset
55 {
4233
ccfdb55c8156 [project @ 2002-12-20 22:43:54 by jwe]
jwe
parents: 3372
diff changeset
56 octave_value retval;
2928
295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe]
jwe
parents:
diff changeset
57
295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe]
jwe
parents:
diff changeset
58 int nargin = args.length ();
295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe]
jwe
parents:
diff changeset
59
295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe]
jwe
parents:
diff changeset
60 if (nargin < 1 || nargin > 2)
295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe]
jwe
parents:
diff changeset
61 {
5823
080c08b192d8 [project @ 2006-05-19 05:32:17 by jwe]
jwe
parents: 5307
diff changeset
62 print_usage ();
2928
295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe]
jwe
parents:
diff changeset
63 return retval;
295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe]
jwe
parents:
diff changeset
64 }
295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe]
jwe
parents:
diff changeset
65
295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe]
jwe
parents:
diff changeset
66 octave_value arg = args(0);
295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe]
jwe
parents:
diff changeset
67
295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe]
jwe
parents:
diff changeset
68 int arg_is_empty = empty_arg ("pinv", arg.rows (), arg.columns ());
295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe]
jwe
parents:
diff changeset
69
295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe]
jwe
parents:
diff changeset
70 if (arg_is_empty < 0)
295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe]
jwe
parents:
diff changeset
71 return retval;
295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe]
jwe
parents:
diff changeset
72 else if (arg_is_empty > 0)
4233
ccfdb55c8156 [project @ 2002-12-20 22:43:54 by jwe]
jwe
parents: 3372
diff changeset
73 return octave_value (Matrix ());
2928
295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe]
jwe
parents:
diff changeset
74
8840
c690e3772583 support diagonal matrices in pinv
Jaroslav Hajek <highegg@gmail.com>
parents: 7789
diff changeset
75 bool isfloat = arg.is_single_type ();
c690e3772583 support diagonal matrices in pinv
Jaroslav Hajek <highegg@gmail.com>
parents: 7789
diff changeset
76
c690e3772583 support diagonal matrices in pinv
Jaroslav Hajek <highegg@gmail.com>
parents: 7789
diff changeset
77 if (arg.is_diag_matrix ())
c690e3772583 support diagonal matrices in pinv
Jaroslav Hajek <highegg@gmail.com>
parents: 7789
diff changeset
78 {
c690e3772583 support diagonal matrices in pinv
Jaroslav Hajek <highegg@gmail.com>
parents: 7789
diff changeset
79 if (nargin == 2)
c690e3772583 support diagonal matrices in pinv
Jaroslav Hajek <highegg@gmail.com>
parents: 7789
diff changeset
80 warning ("pinv: tol is ignored for diagonal matrices");
c690e3772583 support diagonal matrices in pinv
Jaroslav Hajek <highegg@gmail.com>
parents: 7789
diff changeset
81
c690e3772583 support diagonal matrices in pinv
Jaroslav Hajek <highegg@gmail.com>
parents: 7789
diff changeset
82 const octave_base_value& a = arg.get_rep ();
c690e3772583 support diagonal matrices in pinv
Jaroslav Hajek <highegg@gmail.com>
parents: 7789
diff changeset
83 if (arg.is_complex_type ())
c690e3772583 support diagonal matrices in pinv
Jaroslav Hajek <highegg@gmail.com>
parents: 7789
diff changeset
84 {
c690e3772583 support diagonal matrices in pinv
Jaroslav Hajek <highegg@gmail.com>
parents: 7789
diff changeset
85 if (isfloat)
c690e3772583 support diagonal matrices in pinv
Jaroslav Hajek <highegg@gmail.com>
parents: 7789
diff changeset
86 {
c690e3772583 support diagonal matrices in pinv
Jaroslav Hajek <highegg@gmail.com>
parents: 7789
diff changeset
87 CAST_CONV_ARG (const octave_float_complex_diag_matrix&);
c690e3772583 support diagonal matrices in pinv
Jaroslav Hajek <highegg@gmail.com>
parents: 7789
diff changeset
88 retval = v.float_complex_diag_matrix_value ().pseudo_inverse ();
c690e3772583 support diagonal matrices in pinv
Jaroslav Hajek <highegg@gmail.com>
parents: 7789
diff changeset
89 }
c690e3772583 support diagonal matrices in pinv
Jaroslav Hajek <highegg@gmail.com>
parents: 7789
diff changeset
90 else
c690e3772583 support diagonal matrices in pinv
Jaroslav Hajek <highegg@gmail.com>
parents: 7789
diff changeset
91 {
c690e3772583 support diagonal matrices in pinv
Jaroslav Hajek <highegg@gmail.com>
parents: 7789
diff changeset
92 CAST_CONV_ARG (const octave_complex_diag_matrix&);
c690e3772583 support diagonal matrices in pinv
Jaroslav Hajek <highegg@gmail.com>
parents: 7789
diff changeset
93 retval = v.complex_diag_matrix_value ().pseudo_inverse ();
c690e3772583 support diagonal matrices in pinv
Jaroslav Hajek <highegg@gmail.com>
parents: 7789
diff changeset
94 }
c690e3772583 support diagonal matrices in pinv
Jaroslav Hajek <highegg@gmail.com>
parents: 7789
diff changeset
95 }
c690e3772583 support diagonal matrices in pinv
Jaroslav Hajek <highegg@gmail.com>
parents: 7789
diff changeset
96 else
c690e3772583 support diagonal matrices in pinv
Jaroslav Hajek <highegg@gmail.com>
parents: 7789
diff changeset
97 {
c690e3772583 support diagonal matrices in pinv
Jaroslav Hajek <highegg@gmail.com>
parents: 7789
diff changeset
98 if (isfloat)
c690e3772583 support diagonal matrices in pinv
Jaroslav Hajek <highegg@gmail.com>
parents: 7789
diff changeset
99 {
c690e3772583 support diagonal matrices in pinv
Jaroslav Hajek <highegg@gmail.com>
parents: 7789
diff changeset
100 CAST_CONV_ARG (const octave_float_diag_matrix&);
c690e3772583 support diagonal matrices in pinv
Jaroslav Hajek <highegg@gmail.com>
parents: 7789
diff changeset
101 retval = v.float_diag_matrix_value ().pseudo_inverse ();
c690e3772583 support diagonal matrices in pinv
Jaroslav Hajek <highegg@gmail.com>
parents: 7789
diff changeset
102 }
c690e3772583 support diagonal matrices in pinv
Jaroslav Hajek <highegg@gmail.com>
parents: 7789
diff changeset
103 else
c690e3772583 support diagonal matrices in pinv
Jaroslav Hajek <highegg@gmail.com>
parents: 7789
diff changeset
104 {
c690e3772583 support diagonal matrices in pinv
Jaroslav Hajek <highegg@gmail.com>
parents: 7789
diff changeset
105 CAST_CONV_ARG (const octave_diag_matrix&);
c690e3772583 support diagonal matrices in pinv
Jaroslav Hajek <highegg@gmail.com>
parents: 7789
diff changeset
106 retval = v.diag_matrix_value ().pseudo_inverse ();
c690e3772583 support diagonal matrices in pinv
Jaroslav Hajek <highegg@gmail.com>
parents: 7789
diff changeset
107 }
c690e3772583 support diagonal matrices in pinv
Jaroslav Hajek <highegg@gmail.com>
parents: 7789
diff changeset
108 }
c690e3772583 support diagonal matrices in pinv
Jaroslav Hajek <highegg@gmail.com>
parents: 7789
diff changeset
109 }
c690e3772583 support diagonal matrices in pinv
Jaroslav Hajek <highegg@gmail.com>
parents: 7789
diff changeset
110 else if (arg.is_perm_matrix ())
c690e3772583 support diagonal matrices in pinv
Jaroslav Hajek <highegg@gmail.com>
parents: 7789
diff changeset
111 {
c690e3772583 support diagonal matrices in pinv
Jaroslav Hajek <highegg@gmail.com>
parents: 7789
diff changeset
112 const octave_base_value& a = arg.get_rep ();
c690e3772583 support diagonal matrices in pinv
Jaroslav Hajek <highegg@gmail.com>
parents: 7789
diff changeset
113 if (isfloat)
c690e3772583 support diagonal matrices in pinv
Jaroslav Hajek <highegg@gmail.com>
parents: 7789
diff changeset
114 {
c690e3772583 support diagonal matrices in pinv
Jaroslav Hajek <highegg@gmail.com>
parents: 7789
diff changeset
115 CAST_CONV_ARG (const octave_float_perm_matrix&);
c690e3772583 support diagonal matrices in pinv
Jaroslav Hajek <highegg@gmail.com>
parents: 7789
diff changeset
116 retval = v.perm_matrix_value ().inverse ();
c690e3772583 support diagonal matrices in pinv
Jaroslav Hajek <highegg@gmail.com>
parents: 7789
diff changeset
117 }
c690e3772583 support diagonal matrices in pinv
Jaroslav Hajek <highegg@gmail.com>
parents: 7789
diff changeset
118 else
c690e3772583 support diagonal matrices in pinv
Jaroslav Hajek <highegg@gmail.com>
parents: 7789
diff changeset
119 {
c690e3772583 support diagonal matrices in pinv
Jaroslav Hajek <highegg@gmail.com>
parents: 7789
diff changeset
120 CAST_CONV_ARG (const octave_perm_matrix&);
c690e3772583 support diagonal matrices in pinv
Jaroslav Hajek <highegg@gmail.com>
parents: 7789
diff changeset
121 retval = v.perm_matrix_value ().inverse ();
c690e3772583 support diagonal matrices in pinv
Jaroslav Hajek <highegg@gmail.com>
parents: 7789
diff changeset
122 }
c690e3772583 support diagonal matrices in pinv
Jaroslav Hajek <highegg@gmail.com>
parents: 7789
diff changeset
123 }
c690e3772583 support diagonal matrices in pinv
Jaroslav Hajek <highegg@gmail.com>
parents: 7789
diff changeset
124 else if (isfloat)
2928
295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe]
jwe
parents:
diff changeset
125 {
7789
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
126 float tol = 0.0;
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
127 if (nargin == 2)
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
128 tol = args(1).float_value ();
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
129
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
130 if (error_state)
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
131 return retval;
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
132
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
133 if (tol < 0.0)
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
134 {
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
135 error ("pinv: tol must be greater than zero");
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
136 return retval;
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
137 }
2928
295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe]
jwe
parents:
diff changeset
138
7789
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
139 if (arg.is_real_type ())
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
140 {
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
141 FloatMatrix m = arg.float_matrix_value ();
2928
295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe]
jwe
parents:
diff changeset
142
7789
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
143 if (! error_state)
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
144 retval = m.pseudo_inverse (tol);
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
145 }
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
146 else if (arg.is_complex_type ())
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
147 {
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
148 FloatComplexMatrix m = arg.float_complex_matrix_value ();
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
149
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
150 if (! error_state)
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
151 retval = m.pseudo_inverse (tol);
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
152 }
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
153 else
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
154 {
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
155 gripe_wrong_type_arg ("pinv", arg);
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
156 }
2928
295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe]
jwe
parents:
diff changeset
157 }
295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe]
jwe
parents:
diff changeset
158 else
295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe]
jwe
parents:
diff changeset
159 {
7789
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
160 double tol = 0.0;
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
161 if (nargin == 2)
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
162 tol = args(1).double_value ();
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
163
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
164 if (error_state)
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
165 return retval;
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
166
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
167 if (tol < 0.0)
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
168 {
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
169 error ("pinv: tol must be greater than zero");
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
170 return retval;
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
171 }
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
172
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
173 if (arg.is_real_type ())
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
174 {
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
175 Matrix m = arg.matrix_value ();
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
176
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
177 if (! error_state)
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
178 retval = m.pseudo_inverse (tol);
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
179 }
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
180 else if (arg.is_complex_type ())
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
181 {
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
182 ComplexMatrix m = arg.complex_matrix_value ();
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
183
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
184 if (! error_state)
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
185 retval = m.pseudo_inverse (tol);
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
186 }
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
187 else
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
188 {
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
189 gripe_wrong_type_arg ("pinv", arg);
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
190 }
2928
295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe]
jwe
parents:
diff changeset
191 }
295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe]
jwe
parents:
diff changeset
192
295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe]
jwe
parents:
diff changeset
193 return retval;
295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe]
jwe
parents:
diff changeset
194 }
295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe]
jwe
parents:
diff changeset
195
295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe]
jwe
parents:
diff changeset
196 /*
295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe]
jwe
parents:
diff changeset
197 ;;; Local Variables: ***
295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe]
jwe
parents:
diff changeset
198 ;;; mode: C++ ***
295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe]
jwe
parents:
diff changeset
199 ;;; End: ***
295f037b4b3e [project @ 1997-05-05 05:32:33 by jwe]
jwe
parents:
diff changeset
200 */