Mercurial > hg > octave-nkf

annotate liboctave/array/dDiagMatrix.cc @ 16660:cbb1bb7a5c3d

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Added tag ss-3-7-5 for changeset 608e307b4914
author John W. Eaton <jwe@octave.org>
date Tue, 14 May 2013 05:23:53 -0400
parents 0a0912a9ab6e
children 7975d75f933c
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
1993
1b57120c997b [project @ 1996-03-03 01:16:15 by jwe]
jwe
parents: 1882
diff changeset
1 // DiagMatrix manipulations.
458
38cb88095913 [project @ 1994-06-06 00:41:10 by jwe]
jwe
parents:
diff changeset
2 /*
38cb88095913 [project @ 1994-06-06 00:41:10 by jwe]
jwe
parents:
diff changeset
3
14138
72c96de7a403 maint: update copyright notices for 2012
John W. Eaton <jwe@octave.org>
parents: 11586
diff changeset
4 Copyright (C) 1994-2012 John W. Eaton
9601
a9b37bae1802 add a couple of missing copyright statements
Jaroslav Hajek <highegg@gmail.com>
parents: 9550
diff changeset
5 Copyright (C) 2009 VZLU Prague
458
38cb88095913 [project @ 1994-06-06 00:41:10 by jwe]
jwe
parents:
diff changeset
6
38cb88095913 [project @ 1994-06-06 00:41:10 by jwe]
jwe
parents:
diff changeset
7 This file is part of Octave.
38cb88095913 [project @ 1994-06-06 00:41:10 by jwe]
jwe
parents:
diff changeset
8
38cb88095913 [project @ 1994-06-06 00:41:10 by jwe]
jwe
parents:
diff changeset
9 Octave is free software; you can redistribute it and/or modify it
38cb88095913 [project @ 1994-06-06 00:41:10 by jwe]
jwe
parents:
diff changeset
10 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: 5307
diff changeset
11 Free Software Foundation; either version 3 of the License, or (at your
93c65f2a5668 [project @ 2007-10-12 06:40:56 by jwe]
jwe
parents: 5307
diff changeset
12 option) any later version.
458
38cb88095913 [project @ 1994-06-06 00:41:10 by jwe]
jwe
parents:
diff changeset
13
38cb88095913 [project @ 1994-06-06 00:41:10 by jwe]
jwe
parents:
diff changeset
14 Octave is distributed in the hope that it will be useful, but WITHOUT
38cb88095913 [project @ 1994-06-06 00:41:10 by jwe]
jwe
parents:
diff changeset
15 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
38cb88095913 [project @ 1994-06-06 00:41:10 by jwe]
jwe
parents:
diff changeset
16 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
38cb88095913 [project @ 1994-06-06 00:41:10 by jwe]
jwe
parents:
diff changeset
17 for more details.
38cb88095913 [project @ 1994-06-06 00:41:10 by jwe]
jwe
parents:
diff changeset
18
38cb88095913 [project @ 1994-06-06 00:41:10 by jwe]
jwe
parents:
diff changeset
19 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: 5307
diff changeset
20 along with Octave; see the file COPYING. If not, see
93c65f2a5668 [project @ 2007-10-12 06:40:56 by jwe]
jwe
parents: 5307
diff changeset
21 <http://www.gnu.org/licenses/>.
458
38cb88095913 [project @ 1994-06-06 00:41:10 by jwe]
jwe
parents:
diff changeset
22
38cb88095913 [project @ 1994-06-06 00:41:10 by jwe]
jwe
parents:
diff changeset
23 */
38cb88095913 [project @ 1994-06-06 00:41:10 by jwe]
jwe
parents:
diff changeset
24
38cb88095913 [project @ 1994-06-06 00:41:10 by jwe]
jwe
parents:
diff changeset
25 #ifdef HAVE_CONFIG_H
1192
b6360f2d4fa6 [project @ 1995-03-30 21:38:35 by jwe]
jwe
parents: 1011
diff changeset
26 #include <config.h>
458
38cb88095913 [project @ 1994-06-06 00:41:10 by jwe]
jwe
parents:
diff changeset
27 #endif
38cb88095913 [project @ 1994-06-06 00:41:10 by jwe]
jwe
parents:
diff changeset
28
3503
d14c483b3c12 [project @ 2000-02-01 04:06:07 by jwe]
jwe
parents: 2847
diff changeset
29 #include <iostream>
458
38cb88095913 [project @ 1994-06-06 00:41:10 by jwe]
jwe
parents:
diff changeset
30
4669
334a27c8f453 [project @ 2003-11-26 07:02:42 by jwe]
jwe
parents: 4513
diff changeset
31 #include "Array-util.h"
1368
33bb7975f866 [project @ 1995-09-06 00:12:48 by jwe]
jwe
parents: 1360
diff changeset
32 #include "lo-error.h"
458
38cb88095913 [project @ 1994-06-06 00:41:10 by jwe]
jwe
parents:
diff changeset
33 #include "mx-base.h"
38cb88095913 [project @ 1994-06-06 00:41:10 by jwe]
jwe
parents:
diff changeset
34 #include "mx-inlines.cc"
1650
23aa282707e8 [project @ 1995-12-20 06:53:12 by jwe]
jwe
parents: 1627
diff changeset
35 #include "oct-cmplx.h"
458
38cb88095913 [project @ 1994-06-06 00:41:10 by jwe]
jwe
parents:
diff changeset
36
1360
7eb93d12654c [project @ 1995-09-05 21:51:54 by jwe]
jwe
parents: 1315
diff changeset
37 // Diagonal Matrix class.
458
38cb88095913 [project @ 1994-06-06 00:41:10 by jwe]
jwe
parents:
diff changeset
38
2385
170053c0f75e [project @ 1996-10-12 18:23:01 by jwe]
jwe
parents: 1993
diff changeset
39 bool
458
38cb88095913 [project @ 1994-06-06 00:41:10 by jwe]
jwe
parents:
diff changeset
40 DiagMatrix::operator == (const DiagMatrix& a) const
38cb88095913 [project @ 1994-06-06 00:41:10 by jwe]
jwe
parents:
diff changeset
41 {
38cb88095913 [project @ 1994-06-06 00:41:10 by jwe]
jwe
parents:
diff changeset
42 if (rows () != a.rows () || cols () != a.cols ())
38cb88095913 [project @ 1994-06-06 00:41:10 by jwe]
jwe
parents:
diff changeset
43 return 0;
38cb88095913 [project @ 1994-06-06 00:41:10 by jwe]
jwe
parents:
diff changeset
44
9550
3d6a9aea2aea refactor binary & bool ops in liboctave
Jaroslav Hajek <highegg@gmail.com>
parents: 8920
diff changeset
45 return mx_inline_equal (length (), data (), a.data ());
458
38cb88095913 [project @ 1994-06-06 00:41:10 by jwe]
jwe
parents:
diff changeset
46 }
38cb88095913 [project @ 1994-06-06 00:41:10 by jwe]
jwe
parents:
diff changeset
47
2385
170053c0f75e [project @ 1996-10-12 18:23:01 by jwe]
jwe
parents: 1993
diff changeset
48 bool
458
38cb88095913 [project @ 1994-06-06 00:41:10 by jwe]
jwe
parents:
diff changeset
49 DiagMatrix::operator != (const DiagMatrix& a) const
38cb88095913 [project @ 1994-06-06 00:41:10 by jwe]
jwe
parents:
diff changeset
50 {
38cb88095913 [project @ 1994-06-06 00:41:10 by jwe]
jwe
parents:
diff changeset
51 return !(*this == a);
38cb88095913 [project @ 1994-06-06 00:41:10 by jwe]
jwe
parents:
diff changeset
52 }
38cb88095913 [project @ 1994-06-06 00:41:10 by jwe]
jwe
parents:
diff changeset
53
38cb88095913 [project @ 1994-06-06 00:41:10 by jwe]
jwe
parents:
diff changeset
54 DiagMatrix&
38cb88095913 [project @ 1994-06-06 00:41:10 by jwe]
jwe
parents:
diff changeset
55 DiagMatrix::fill (double val)
38cb88095913 [project @ 1994-06-06 00:41:10 by jwe]
jwe
parents:
diff changeset
56 {
5275
23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe]
jwe
parents: 5105
diff changeset
57 for (octave_idx_type i = 0; i < length (); i++)
458
38cb88095913 [project @ 1994-06-06 00:41:10 by jwe]
jwe
parents:
diff changeset
58 elem (i, i) = val;
38cb88095913 [project @ 1994-06-06 00:41:10 by jwe]
jwe
parents:
diff changeset
59 return *this;
38cb88095913 [project @ 1994-06-06 00:41:10 by jwe]
jwe
parents:
diff changeset
60 }
38cb88095913 [project @ 1994-06-06 00:41:10 by jwe]
jwe
parents:
diff changeset
61
38cb88095913 [project @ 1994-06-06 00:41:10 by jwe]
jwe
parents:
diff changeset
62 DiagMatrix&
5275
23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe]
jwe
parents: 5105
diff changeset
63 DiagMatrix::fill (double val, octave_idx_type beg, octave_idx_type end)
458
38cb88095913 [project @ 1994-06-06 00:41:10 by jwe]
jwe
parents:
diff changeset
64 {
38cb88095913 [project @ 1994-06-06 00:41:10 by jwe]
jwe
parents:
diff changeset
65 if (beg < 0 || end >= length () || end < beg)
38cb88095913 [project @ 1994-06-06 00:41:10 by jwe]
jwe
parents:
diff changeset
66 {
38cb88095913 [project @ 1994-06-06 00:41:10 by jwe]
jwe
parents:
diff changeset
67 (*current_liboctave_error_handler) ("range error for fill");
38cb88095913 [project @ 1994-06-06 00:41:10 by jwe]
jwe
parents:
diff changeset
68 return *this;
38cb88095913 [project @ 1994-06-06 00:41:10 by jwe]
jwe
parents:
diff changeset
69 }
38cb88095913 [project @ 1994-06-06 00:41:10 by jwe]
jwe
parents:
diff changeset
70
5275
23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe]
jwe
parents: 5105
diff changeset
71 for (octave_idx_type i = beg; i <= end; i++)
458
38cb88095913 [project @ 1994-06-06 00:41:10 by jwe]
jwe
parents:
diff changeset
72 elem (i, i) = val;
38cb88095913 [project @ 1994-06-06 00:41:10 by jwe]
jwe
parents:
diff changeset
73
38cb88095913 [project @ 1994-06-06 00:41:10 by jwe]
jwe
parents:
diff changeset
74 return *this;
38cb88095913 [project @ 1994-06-06 00:41:10 by jwe]
jwe
parents:
diff changeset
75 }
38cb88095913 [project @ 1994-06-06 00:41:10 by jwe]
jwe
parents:
diff changeset
76
38cb88095913 [project @ 1994-06-06 00:41:10 by jwe]
jwe
parents:
diff changeset
77 DiagMatrix&
38cb88095913 [project @ 1994-06-06 00:41:10 by jwe]
jwe
parents:
diff changeset
78 DiagMatrix::fill (const ColumnVector& a)
38cb88095913 [project @ 1994-06-06 00:41:10 by jwe]
jwe
parents:
diff changeset
79 {
5275
23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe]
jwe
parents: 5105
diff changeset
80 octave_idx_type len = length ();
458
38cb88095913 [project @ 1994-06-06 00:41:10 by jwe]
jwe
parents:
diff changeset
81 if (a.length () != len)
38cb88095913 [project @ 1994-06-06 00:41:10 by jwe]
jwe
parents:
diff changeset
82 {
38cb88095913 [project @ 1994-06-06 00:41:10 by jwe]
jwe
parents:
diff changeset
83 (*current_liboctave_error_handler) ("range error for fill");
38cb88095913 [project @ 1994-06-06 00:41:10 by jwe]
jwe
parents:
diff changeset
84 return *this;
38cb88095913 [project @ 1994-06-06 00:41:10 by jwe]
jwe
parents:
diff changeset
85 }
38cb88095913 [project @ 1994-06-06 00:41:10 by jwe]
jwe
parents:
diff changeset
86
5275
23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe]
jwe
parents: 5105
diff changeset
87 for (octave_idx_type i = 0; i < len; i++)
458
38cb88095913 [project @ 1994-06-06 00:41:10 by jwe]
jwe
parents:
diff changeset
88 elem (i, i) = a.elem (i);
38cb88095913 [project @ 1994-06-06 00:41:10 by jwe]
jwe
parents:
diff changeset
89
38cb88095913 [project @ 1994-06-06 00:41:10 by jwe]
jwe
parents:
diff changeset
90 return *this;
38cb88095913 [project @ 1994-06-06 00:41:10 by jwe]
jwe
parents:
diff changeset
91 }
38cb88095913 [project @ 1994-06-06 00:41:10 by jwe]
jwe
parents:
diff changeset
92
38cb88095913 [project @ 1994-06-06 00:41:10 by jwe]
jwe
parents:
diff changeset
93 DiagMatrix&
38cb88095913 [project @ 1994-06-06 00:41:10 by jwe]
jwe
parents:
diff changeset
94 DiagMatrix::fill (const RowVector& a)
38cb88095913 [project @ 1994-06-06 00:41:10 by jwe]
jwe
parents:
diff changeset
95 {
5275
23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe]
jwe
parents: 5105
diff changeset
96 octave_idx_type len = length ();
458
38cb88095913 [project @ 1994-06-06 00:41:10 by jwe]
jwe
parents:
diff changeset
97 if (a.length () != len)
38cb88095913 [project @ 1994-06-06 00:41:10 by jwe]
jwe
parents:
diff changeset
98 {
38cb88095913 [project @ 1994-06-06 00:41:10 by jwe]
jwe
parents:
diff changeset
99 (*current_liboctave_error_handler) ("range error for fill");
38cb88095913 [project @ 1994-06-06 00:41:10 by jwe]
jwe
parents:
diff changeset
100 return *this;
38cb88095913 [project @ 1994-06-06 00:41:10 by jwe]
jwe
parents:
diff changeset
101 }
38cb88095913 [project @ 1994-06-06 00:41:10 by jwe]
jwe
parents:
diff changeset
102
5275
23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe]
jwe
parents: 5105
diff changeset
103 for (octave_idx_type i = 0; i < len; i++)
458
38cb88095913 [project @ 1994-06-06 00:41:10 by jwe]
jwe
parents:
diff changeset
104 elem (i, i) = a.elem (i);
38cb88095913 [project @ 1994-06-06 00:41:10 by jwe]
jwe
parents:
diff changeset
105
38cb88095913 [project @ 1994-06-06 00:41:10 by jwe]
jwe
parents:
diff changeset
106 return *this;
38cb88095913 [project @ 1994-06-06 00:41:10 by jwe]
jwe
parents:
diff changeset
107 }
38cb88095913 [project @ 1994-06-06 00:41:10 by jwe]
jwe
parents:
diff changeset
108
38cb88095913 [project @ 1994-06-06 00:41:10 by jwe]
jwe
parents:
diff changeset
109 DiagMatrix&
5275
23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe]
jwe
parents: 5105
diff changeset
110 DiagMatrix::fill (const ColumnVector& a, octave_idx_type beg)
458
38cb88095913 [project @ 1994-06-06 00:41:10 by jwe]
jwe
parents:
diff changeset
111 {
5275
23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe]
jwe
parents: 5105
diff changeset
112 octave_idx_type a_len = a.length ();
458
38cb88095913 [project @ 1994-06-06 00:41:10 by jwe]
jwe
parents:
diff changeset
113 if (beg < 0 || beg + a_len >= length ())
38cb88095913 [project @ 1994-06-06 00:41:10 by jwe]
jwe
parents:
diff changeset
114 {
38cb88095913 [project @ 1994-06-06 00:41:10 by jwe]
jwe
parents:
diff changeset
115 (*current_liboctave_error_handler) ("range error for fill");
38cb88095913 [project @ 1994-06-06 00:41:10 by jwe]
jwe
parents:
diff changeset
116 return *this;
38cb88095913 [project @ 1994-06-06 00:41:10 by jwe]
jwe
parents:
diff changeset
117 }
38cb88095913 [project @ 1994-06-06 00:41:10 by jwe]
jwe
parents:
diff changeset
118
5275
23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe]
jwe
parents: 5105
diff changeset
119 for (octave_idx_type i = 0; i < a_len; i++)
458
38cb88095913 [project @ 1994-06-06 00:41:10 by jwe]
jwe
parents:
diff changeset
120 elem (i+beg, i+beg) = a.elem (i);
38cb88095913 [project @ 1994-06-06 00:41:10 by jwe]
jwe
parents:
diff changeset
121
38cb88095913 [project @ 1994-06-06 00:41:10 by jwe]
jwe
parents:
diff changeset
122 return *this;
38cb88095913 [project @ 1994-06-06 00:41:10 by jwe]
jwe
parents:
diff changeset
123 }
38cb88095913 [project @ 1994-06-06 00:41:10 by jwe]
jwe
parents:
diff changeset
124
38cb88095913 [project @ 1994-06-06 00:41:10 by jwe]
jwe
parents:
diff changeset
125 DiagMatrix&
5275
23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe]
jwe
parents: 5105
diff changeset
126 DiagMatrix::fill (const RowVector& a, octave_idx_type beg)
458
38cb88095913 [project @ 1994-06-06 00:41:10 by jwe]
jwe
parents:
diff changeset
127 {
5275
23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe]
jwe
parents: 5105
diff changeset
128 octave_idx_type a_len = a.length ();
458
38cb88095913 [project @ 1994-06-06 00:41:10 by jwe]
jwe
parents:
diff changeset
129 if (beg < 0 || beg + a_len >= length ())
38cb88095913 [project @ 1994-06-06 00:41:10 by jwe]
jwe
parents:
diff changeset
130 {
38cb88095913 [project @ 1994-06-06 00:41:10 by jwe]
jwe
parents:
diff changeset
131 (*current_liboctave_error_handler) ("range error for fill");
38cb88095913 [project @ 1994-06-06 00:41:10 by jwe]
jwe
parents:
diff changeset
132 return *this;
38cb88095913 [project @ 1994-06-06 00:41:10 by jwe]
jwe
parents:
diff changeset
133 }
38cb88095913 [project @ 1994-06-06 00:41:10 by jwe]
jwe
parents:
diff changeset
134
5275
23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe]
jwe
parents: 5105
diff changeset
135 for (octave_idx_type i = 0; i < a_len; i++)
458
38cb88095913 [project @ 1994-06-06 00:41:10 by jwe]
jwe
parents:
diff changeset
136 elem (i+beg, i+beg) = a.elem (i);
38cb88095913 [project @ 1994-06-06 00:41:10 by jwe]
jwe
parents:
diff changeset
137
38cb88095913 [project @ 1994-06-06 00:41:10 by jwe]
jwe
parents:
diff changeset
138 return *this;
38cb88095913 [project @ 1994-06-06 00:41:10 by jwe]
jwe
parents:
diff changeset
139 }
38cb88095913 [project @ 1994-06-06 00:41:10 by jwe]
jwe
parents:
diff changeset
140
38cb88095913 [project @ 1994-06-06 00:41:10 by jwe]
jwe
parents:
diff changeset
141 DiagMatrix
8366
8b1a2555c4e2 implement diagonal matrix objects
Jaroslav Hajek <highegg@gmail.com>
parents: 7924
diff changeset
142 DiagMatrix::abs (void) const
8b1a2555c4e2 implement diagonal matrix objects
Jaroslav Hajek <highegg@gmail.com>
parents: 7924
diff changeset
143 {
15448
0a0912a9ab6e Replace deprecated DiagArray2<T>::diag calls with DiagArray2<T>::extract_diag
Jordi Gutiérrez Hermoso <jordigh@octave.org>
parents: 15271
diff changeset
144 return DiagMatrix (extract_diag ().abs (), rows (), columns ());
8366
8b1a2555c4e2 implement diagonal matrix objects
Jaroslav Hajek <highegg@gmail.com>
parents: 7924
diff changeset
145 }
8b1a2555c4e2 implement diagonal matrix objects
Jaroslav Hajek <highegg@gmail.com>
parents: 7924
diff changeset
146
8b1a2555c4e2 implement diagonal matrix objects
Jaroslav Hajek <highegg@gmail.com>
parents: 7924
diff changeset
147 DiagMatrix
1205
8302fab9fe24 [project @ 1995-04-04 02:05:01 by jwe]
jwe
parents: 1192
diff changeset
148 real (const ComplexDiagMatrix& a)
8302fab9fe24 [project @ 1995-04-04 02:05:01 by jwe]
jwe
parents: 1192
diff changeset
149 {
15448
0a0912a9ab6e Replace deprecated DiagArray2<T>::diag calls with DiagArray2<T>::extract_diag
Jordi Gutiérrez Hermoso <jordigh@octave.org>
parents: 15271
diff changeset
150 return DiagMatrix (real (a.extract_diag ()), a.rows (), a.cols ());
1205
8302fab9fe24 [project @ 1995-04-04 02:05:01 by jwe]
jwe
parents: 1192
diff changeset
151 }
8302fab9fe24 [project @ 1995-04-04 02:05:01 by jwe]
jwe
parents: 1192
diff changeset
152
8302fab9fe24 [project @ 1995-04-04 02:05:01 by jwe]
jwe
parents: 1192
diff changeset
153 DiagMatrix
8302fab9fe24 [project @ 1995-04-04 02:05:01 by jwe]
jwe
parents: 1192
diff changeset
154 imag (const ComplexDiagMatrix& a)
8302fab9fe24 [project @ 1995-04-04 02:05:01 by jwe]
jwe
parents: 1192
diff changeset
155 {
15448
0a0912a9ab6e Replace deprecated DiagArray2<T>::diag calls with DiagArray2<T>::extract_diag
Jordi Gutiérrez Hermoso <jordigh@octave.org>
parents: 15271
diff changeset
156 return DiagMatrix (imag (a.extract_diag ()), a.rows (), a.cols ());
1205
8302fab9fe24 [project @ 1995-04-04 02:05:01 by jwe]
jwe
parents: 1192
diff changeset
157 }
8302fab9fe24 [project @ 1995-04-04 02:05:01 by jwe]
jwe
parents: 1192
diff changeset
158
458
38cb88095913 [project @ 1994-06-06 00:41:10 by jwe]
jwe
parents:
diff changeset
159 Matrix
5275
23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe]
jwe
parents: 5105
diff changeset
160 DiagMatrix::extract (octave_idx_type r1, octave_idx_type c1, octave_idx_type r2, octave_idx_type c2) const
458
38cb88095913 [project @ 1994-06-06 00:41:10 by jwe]
jwe
parents:
diff changeset
161 {
5275
23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe]
jwe
parents: 5105
diff changeset
162 if (r1 > r2) { octave_idx_type tmp = r1; r1 = r2; r2 = tmp; }
23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe]
jwe
parents: 5105
diff changeset
163 if (c1 > c2) { octave_idx_type tmp = c1; c1 = c2; c2 = tmp; }
458
38cb88095913 [project @ 1994-06-06 00:41:10 by jwe]
jwe
parents:
diff changeset
164
5275
23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe]
jwe
parents: 5105
diff changeset
165 octave_idx_type new_r = r2 - r1 + 1;
23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe]
jwe
parents: 5105
diff changeset
166 octave_idx_type new_c = c2 - c1 + 1;
458
38cb88095913 [project @ 1994-06-06 00:41:10 by jwe]
jwe
parents:
diff changeset
167
38cb88095913 [project @ 1994-06-06 00:41:10 by jwe]
jwe
parents:
diff changeset
168 Matrix result (new_r, new_c);
38cb88095913 [project @ 1994-06-06 00:41:10 by jwe]
jwe
parents:
diff changeset
169
5275
23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe]
jwe
parents: 5105
diff changeset
170 for (octave_idx_type j = 0; j < new_c; j++)
23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe]
jwe
parents: 5105
diff changeset
171 for (octave_idx_type i = 0; i < new_r; i++)
458
38cb88095913 [project @ 1994-06-06 00:41:10 by jwe]
jwe
parents:
diff changeset
172 result.elem (i, j) = elem (r1+i, c1+j);
38cb88095913 [project @ 1994-06-06 00:41:10 by jwe]
jwe
parents:
diff changeset
173
38cb88095913 [project @ 1994-06-06 00:41:10 by jwe]
jwe
parents:
diff changeset
174 return result;
38cb88095913 [project @ 1994-06-06 00:41:10 by jwe]
jwe
parents:
diff changeset
175 }
38cb88095913 [project @ 1994-06-06 00:41:10 by jwe]
jwe
parents:
diff changeset
176
38cb88095913 [project @ 1994-06-06 00:41:10 by jwe]
jwe
parents:
diff changeset
177 // extract row or column i.
38cb88095913 [project @ 1994-06-06 00:41:10 by jwe]
jwe
parents:
diff changeset
178
38cb88095913 [project @ 1994-06-06 00:41:10 by jwe]
jwe
parents:
diff changeset
179 RowVector
5275
23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe]
jwe
parents: 5105
diff changeset
180 DiagMatrix::row (octave_idx_type i) const
458
38cb88095913 [project @ 1994-06-06 00:41:10 by jwe]
jwe
parents:
diff changeset
181 {
5275
23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe]
jwe
parents: 5105
diff changeset
182 octave_idx_type r = rows ();
23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe]
jwe
parents: 5105
diff changeset
183 octave_idx_type c = cols ();
3504
5eef8a2294bd [project @ 2000-02-01 10:06:51 by jwe]
jwe
parents: 3503
diff changeset
184 if (i < 0 || i >= r)
458
38cb88095913 [project @ 1994-06-06 00:41:10 by jwe]
jwe
parents:
diff changeset
185 {
38cb88095913 [project @ 1994-06-06 00:41:10 by jwe]
jwe
parents:
diff changeset
186 (*current_liboctave_error_handler) ("invalid row selection");
11586
12df7854fa7c strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents: 11523
diff changeset
187 return RowVector ();
458
38cb88095913 [project @ 1994-06-06 00:41:10 by jwe]
jwe
parents:
diff changeset
188 }
38cb88095913 [project @ 1994-06-06 00:41:10 by jwe]
jwe
parents:
diff changeset
189
3504
5eef8a2294bd [project @ 2000-02-01 10:06:51 by jwe]
jwe
parents: 3503
diff changeset
190 RowVector retval (c, 0.0);
5eef8a2294bd [project @ 2000-02-01 10:06:51 by jwe]
jwe
parents: 3503
diff changeset
191 if (r <= c || (r > c && i < c))
458
38cb88095913 [project @ 1994-06-06 00:41:10 by jwe]
jwe
parents:
diff changeset
192 retval.elem (i) = elem (i, i);
38cb88095913 [project @ 1994-06-06 00:41:10 by jwe]
jwe
parents:
diff changeset
193
38cb88095913 [project @ 1994-06-06 00:41:10 by jwe]
jwe
parents:
diff changeset
194 return retval;
38cb88095913 [project @ 1994-06-06 00:41:10 by jwe]
jwe
parents:
diff changeset
195 }
38cb88095913 [project @ 1994-06-06 00:41:10 by jwe]
jwe
parents:
diff changeset
196
38cb88095913 [project @ 1994-06-06 00:41:10 by jwe]
jwe
parents:
diff changeset
197 RowVector
38cb88095913 [project @ 1994-06-06 00:41:10 by jwe]
jwe
parents:
diff changeset
198 DiagMatrix::row (char *s) const
38cb88095913 [project @ 1994-06-06 00:41:10 by jwe]
jwe
parents:
diff changeset
199 {
533
883197c5ad75 [project @ 1994-07-20 20:02:51 by jwe]
jwe
parents: 458
diff changeset
200 if (! s)
458
38cb88095913 [project @ 1994-06-06 00:41:10 by jwe]
jwe
parents:
diff changeset
201 {
38cb88095913 [project @ 1994-06-06 00:41:10 by jwe]
jwe
parents:
diff changeset
202 (*current_liboctave_error_handler) ("invalid row selection");
11586
12df7854fa7c strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents: 11523
diff changeset
203 return RowVector ();
458
38cb88095913 [project @ 1994-06-06 00:41:10 by jwe]
jwe
parents:
diff changeset
204 }
38cb88095913 [project @ 1994-06-06 00:41:10 by jwe]
jwe
parents:
diff changeset
205
38cb88095913 [project @ 1994-06-06 00:41:10 by jwe]
jwe
parents:
diff changeset
206 char c = *s;
38cb88095913 [project @ 1994-06-06 00:41:10 by jwe]
jwe
parents:
diff changeset
207 if (c == 'f' || c == 'F')
5275
23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe]
jwe
parents: 5105
diff changeset
208 return row (static_cast<octave_idx_type>(0));
458
38cb88095913 [project @ 1994-06-06 00:41:10 by jwe]
jwe
parents:
diff changeset
209 else if (c == 'l' || c == 'L')
38cb88095913 [project @ 1994-06-06 00:41:10 by jwe]
jwe
parents:
diff changeset
210 return row (rows () - 1);
38cb88095913 [project @ 1994-06-06 00:41:10 by jwe]
jwe
parents:
diff changeset
211 else
38cb88095913 [project @ 1994-06-06 00:41:10 by jwe]
jwe
parents:
diff changeset
212 {
38cb88095913 [project @ 1994-06-06 00:41:10 by jwe]
jwe
parents:
diff changeset
213 (*current_liboctave_error_handler) ("invalid row selection");
11586
12df7854fa7c strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents: 11523
diff changeset
214 return RowVector ();
458
38cb88095913 [project @ 1994-06-06 00:41:10 by jwe]
jwe
parents:
diff changeset
215 }
38cb88095913 [project @ 1994-06-06 00:41:10 by jwe]
jwe
parents:
diff changeset
216 }
38cb88095913 [project @ 1994-06-06 00:41:10 by jwe]
jwe
parents:
diff changeset
217
38cb88095913 [project @ 1994-06-06 00:41:10 by jwe]
jwe
parents:
diff changeset
218 ColumnVector
5275
23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe]
jwe
parents: 5105
diff changeset
219 DiagMatrix::column (octave_idx_type i) const
458
38cb88095913 [project @ 1994-06-06 00:41:10 by jwe]
jwe
parents:
diff changeset
220 {
5275
23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe]
jwe
parents: 5105
diff changeset
221 octave_idx_type r = rows ();
23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe]
jwe
parents: 5105
diff changeset
222 octave_idx_type c = cols ();
3504
5eef8a2294bd [project @ 2000-02-01 10:06:51 by jwe]
jwe
parents: 3503
diff changeset
223 if (i < 0 || i >= c)
458
38cb88095913 [project @ 1994-06-06 00:41:10 by jwe]
jwe
parents:
diff changeset
224 {
38cb88095913 [project @ 1994-06-06 00:41:10 by jwe]
jwe
parents:
diff changeset
225 (*current_liboctave_error_handler) ("invalid column selection");
11586
12df7854fa7c strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents: 11523
diff changeset
226 return ColumnVector ();
458
38cb88095913 [project @ 1994-06-06 00:41:10 by jwe]
jwe
parents:
diff changeset
227 }
38cb88095913 [project @ 1994-06-06 00:41:10 by jwe]
jwe
parents:
diff changeset
228
3504
5eef8a2294bd [project @ 2000-02-01 10:06:51 by jwe]
jwe
parents: 3503
diff changeset
229 ColumnVector retval (r, 0.0);
5eef8a2294bd [project @ 2000-02-01 10:06:51 by jwe]
jwe
parents: 3503
diff changeset
230 if (r >= c || (r < c && i < r))
458
38cb88095913 [project @ 1994-06-06 00:41:10 by jwe]
jwe
parents:
diff changeset
231 retval.elem (i) = elem (i, i);
38cb88095913 [project @ 1994-06-06 00:41:10 by jwe]
jwe
parents:
diff changeset
232
38cb88095913 [project @ 1994-06-06 00:41:10 by jwe]
jwe
parents:
diff changeset
233 return retval;
38cb88095913 [project @ 1994-06-06 00:41:10 by jwe]
jwe
parents:
diff changeset
234 }
38cb88095913 [project @ 1994-06-06 00:41:10 by jwe]
jwe
parents:
diff changeset
235
38cb88095913 [project @ 1994-06-06 00:41:10 by jwe]
jwe
parents:
diff changeset
236 ColumnVector
38cb88095913 [project @ 1994-06-06 00:41:10 by jwe]
jwe
parents:
diff changeset
237 DiagMatrix::column (char *s) const
38cb88095913 [project @ 1994-06-06 00:41:10 by jwe]
jwe
parents:
diff changeset
238 {
533
883197c5ad75 [project @ 1994-07-20 20:02:51 by jwe]
jwe
parents: 458
diff changeset
239 if (! s)
458
38cb88095913 [project @ 1994-06-06 00:41:10 by jwe]
jwe
parents:
diff changeset
240 {
38cb88095913 [project @ 1994-06-06 00:41:10 by jwe]
jwe
parents:
diff changeset
241 (*current_liboctave_error_handler) ("invalid column selection");
11586
12df7854fa7c strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents: 11523
diff changeset
242 return ColumnVector ();
458
38cb88095913 [project @ 1994-06-06 00:41:10 by jwe]
jwe
parents:
diff changeset
243 }
38cb88095913 [project @ 1994-06-06 00:41:10 by jwe]
jwe
parents:
diff changeset
244
38cb88095913 [project @ 1994-06-06 00:41:10 by jwe]
jwe
parents:
diff changeset
245 char c = *s;
38cb88095913 [project @ 1994-06-06 00:41:10 by jwe]
jwe
parents:
diff changeset
246 if (c == 'f' || c == 'F')
5275
23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe]
jwe
parents: 5105
diff changeset
247 return column (static_cast<octave_idx_type>(0));
458
38cb88095913 [project @ 1994-06-06 00:41:10 by jwe]
jwe
parents:
diff changeset
248 else if (c == 'l' || c == 'L')
38cb88095913 [project @ 1994-06-06 00:41:10 by jwe]
jwe
parents:
diff changeset
249 return column (cols () - 1);
38cb88095913 [project @ 1994-06-06 00:41:10 by jwe]
jwe
parents:
diff changeset
250 else
38cb88095913 [project @ 1994-06-06 00:41:10 by jwe]
jwe
parents:
diff changeset
251 {
38cb88095913 [project @ 1994-06-06 00:41:10 by jwe]
jwe
parents:
diff changeset
252 (*current_liboctave_error_handler) ("invalid column selection");
11586
12df7854fa7c strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents: 11523
diff changeset
253 return ColumnVector ();
458
38cb88095913 [project @ 1994-06-06 00:41:10 by jwe]
jwe
parents:
diff changeset
254 }
38cb88095913 [project @ 1994-06-06 00:41:10 by jwe]
jwe
parents:
diff changeset
255 }
38cb88095913 [project @ 1994-06-06 00:41:10 by jwe]
jwe
parents:
diff changeset
256
38cb88095913 [project @ 1994-06-06 00:41:10 by jwe]
jwe
parents:
diff changeset
257 DiagMatrix
38cb88095913 [project @ 1994-06-06 00:41:10 by jwe]
jwe
parents:
diff changeset
258 DiagMatrix::inverse (void) const
38cb88095913 [project @ 1994-06-06 00:41:10 by jwe]
jwe
parents:
diff changeset
259 {
8811
20dfb885f877 int -> octave_idx fixes
John W. Eaton <jwe@octave.org>
parents: 8375
diff changeset
260 octave_idx_type info;
458
38cb88095913 [project @ 1994-06-06 00:41:10 by jwe]
jwe
parents:
diff changeset
261 return inverse (info);
38cb88095913 [project @ 1994-06-06 00:41:10 by jwe]
jwe
parents:
diff changeset
262 }
38cb88095913 [project @ 1994-06-06 00:41:10 by jwe]
jwe
parents:
diff changeset
263
38cb88095913 [project @ 1994-06-06 00:41:10 by jwe]
jwe
parents:
diff changeset
264 DiagMatrix
8811
20dfb885f877 int -> octave_idx fixes
John W. Eaton <jwe@octave.org>
parents: 8375
diff changeset
265 DiagMatrix::inverse (octave_idx_type &info) const
458
38cb88095913 [project @ 1994-06-06 00:41:10 by jwe]
jwe
parents:
diff changeset
266 {
5275
23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe]
jwe
parents: 5105
diff changeset
267 octave_idx_type r = rows ();
23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe]
jwe
parents: 5105
diff changeset
268 octave_idx_type c = cols ();
23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe]
jwe
parents: 5105
diff changeset
269 octave_idx_type len = length ();
3504
5eef8a2294bd [project @ 2000-02-01 10:06:51 by jwe]
jwe
parents: 3503
diff changeset
270 if (r != c)
458
38cb88095913 [project @ 1994-06-06 00:41:10 by jwe]
jwe
parents:
diff changeset
271 {
38cb88095913 [project @ 1994-06-06 00:41:10 by jwe]
jwe
parents:
diff changeset
272 (*current_liboctave_error_handler) ("inverse requires square matrix");
38cb88095913 [project @ 1994-06-06 00:41:10 by jwe]
jwe
parents:
diff changeset
273 return DiagMatrix ();
38cb88095913 [project @ 1994-06-06 00:41:10 by jwe]
jwe
parents:
diff changeset
274 }
38cb88095913 [project @ 1994-06-06 00:41:10 by jwe]
jwe
parents:
diff changeset
275
3504
5eef8a2294bd [project @ 2000-02-01 10:06:51 by jwe]
jwe
parents: 3503
diff changeset
276 DiagMatrix retval (r, c);
1627
8f798f963805 [project @ 1995-11-13 14:37:05 by jwe]
jwe
parents: 1368
diff changeset
277
458
38cb88095913 [project @ 1994-06-06 00:41:10 by jwe]
jwe
parents:
diff changeset
278 info = 0;
5275
23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe]
jwe
parents: 5105
diff changeset
279 for (octave_idx_type i = 0; i < len; i++)
458
38cb88095913 [project @ 1994-06-06 00:41:10 by jwe]
jwe
parents:
diff changeset
280 {
38cb88095913 [project @ 1994-06-06 00:41:10 by jwe]
jwe
parents:
diff changeset
281 if (elem (i, i) == 0.0)
10314
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
282 {
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
283 info = -1;
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
284 return *this;
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
285 }
458
38cb88095913 [project @ 1994-06-06 00:41:10 by jwe]
jwe
parents:
diff changeset
286 else
10314
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
287 retval.elem (i, i) = 1.0 / elem (i, i);
458
38cb88095913 [project @ 1994-06-06 00:41:10 by jwe]
jwe
parents:
diff changeset
288 }
38cb88095913 [project @ 1994-06-06 00:41:10 by jwe]
jwe
parents:
diff changeset
289
1627
8f798f963805 [project @ 1995-11-13 14:37:05 by jwe]
jwe
parents: 1368
diff changeset
290 return retval;
458
38cb88095913 [project @ 1994-06-06 00:41:10 by jwe]
jwe
parents:
diff changeset
291 }
38cb88095913 [project @ 1994-06-06 00:41:10 by jwe]
jwe
parents:
diff changeset
292
8840
c690e3772583 support diagonal matrices in pinv
Jaroslav Hajek <highegg@gmail.com>
parents: 8811
diff changeset
293 DiagMatrix
c690e3772583 support diagonal matrices in pinv
Jaroslav Hajek <highegg@gmail.com>
parents: 8811
diff changeset
294 DiagMatrix::pseudo_inverse (void) const
c690e3772583 support diagonal matrices in pinv
Jaroslav Hajek <highegg@gmail.com>
parents: 8811
diff changeset
295 {
c690e3772583 support diagonal matrices in pinv
Jaroslav Hajek <highegg@gmail.com>
parents: 8811
diff changeset
296 octave_idx_type r = rows ();
c690e3772583 support diagonal matrices in pinv
Jaroslav Hajek <highegg@gmail.com>
parents: 8811
diff changeset
297 octave_idx_type c = cols ();
c690e3772583 support diagonal matrices in pinv
Jaroslav Hajek <highegg@gmail.com>
parents: 8811
diff changeset
298 octave_idx_type len = length ();
c690e3772583 support diagonal matrices in pinv
Jaroslav Hajek <highegg@gmail.com>
parents: 8811
diff changeset
299
c690e3772583 support diagonal matrices in pinv
Jaroslav Hajek <highegg@gmail.com>
parents: 8811
diff changeset
300 DiagMatrix retval (c, r);
c690e3772583 support diagonal matrices in pinv
Jaroslav Hajek <highegg@gmail.com>
parents: 8811
diff changeset
301
c690e3772583 support diagonal matrices in pinv
Jaroslav Hajek <highegg@gmail.com>
parents: 8811
diff changeset
302 for (octave_idx_type i = 0; i < len; i++)
c690e3772583 support diagonal matrices in pinv
Jaroslav Hajek <highegg@gmail.com>
parents: 8811
diff changeset
303 {
c690e3772583 support diagonal matrices in pinv
Jaroslav Hajek <highegg@gmail.com>
parents: 8811
diff changeset
304 if (elem (i, i) != 0.0)
c690e3772583 support diagonal matrices in pinv
Jaroslav Hajek <highegg@gmail.com>
parents: 8811
diff changeset
305 retval.elem (i, i) = 1.0 / elem (i, i);
c690e3772583 support diagonal matrices in pinv
Jaroslav Hajek <highegg@gmail.com>
parents: 8811
diff changeset
306 else
c690e3772583 support diagonal matrices in pinv
Jaroslav Hajek <highegg@gmail.com>
parents: 8811
diff changeset
307 retval.elem (i, i) = 0.0;
c690e3772583 support diagonal matrices in pinv
Jaroslav Hajek <highegg@gmail.com>
parents: 8811
diff changeset
308 }
c690e3772583 support diagonal matrices in pinv
Jaroslav Hajek <highegg@gmail.com>
parents: 8811
diff changeset
309
c690e3772583 support diagonal matrices in pinv
Jaroslav Hajek <highegg@gmail.com>
parents: 8811
diff changeset
310 return retval;
c690e3772583 support diagonal matrices in pinv
Jaroslav Hajek <highegg@gmail.com>
parents: 8811
diff changeset
311 }
c690e3772583 support diagonal matrices in pinv
Jaroslav Hajek <highegg@gmail.com>
parents: 8811
diff changeset
312
458
38cb88095913 [project @ 1994-06-06 00:41:10 by jwe]
jwe
parents:
diff changeset
313 // diagonal matrix by diagonal matrix -> diagonal matrix operations
38cb88095913 [project @ 1994-06-06 00:41:10 by jwe]
jwe
parents:
diff changeset
314
38cb88095913 [project @ 1994-06-06 00:41:10 by jwe]
jwe
parents:
diff changeset
315 // diagonal matrix by diagonal matrix -> diagonal matrix operations
38cb88095913 [project @ 1994-06-06 00:41:10 by jwe]
jwe
parents:
diff changeset
316
38cb88095913 [project @ 1994-06-06 00:41:10 by jwe]
jwe
parents:
diff changeset
317 DiagMatrix
38cb88095913 [project @ 1994-06-06 00:41:10 by jwe]
jwe
parents:
diff changeset
318 operator * (const DiagMatrix& a, const DiagMatrix& b)
38cb88095913 [project @ 1994-06-06 00:41:10 by jwe]
jwe
parents:
diff changeset
319 {
5275
23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe]
jwe
parents: 5105
diff changeset
320 octave_idx_type a_nr = a.rows ();
23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe]
jwe
parents: 5105
diff changeset
321 octave_idx_type a_nc = a.cols ();
2385
170053c0f75e [project @ 1996-10-12 18:23:01 by jwe]
jwe
parents: 1993
diff changeset
322
5275
23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe]
jwe
parents: 5105
diff changeset
323 octave_idx_type b_nr = b.rows ();
23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe]
jwe
parents: 5105
diff changeset
324 octave_idx_type b_nc = b.cols ();
2385
170053c0f75e [project @ 1996-10-12 18:23:01 by jwe]
jwe
parents: 1993
diff changeset
325
3504
5eef8a2294bd [project @ 2000-02-01 10:06:51 by jwe]
jwe
parents: 3503
diff changeset
326 if (a_nc != b_nr)
9698
7c6d5d8c8d37 fix diag*diag multiplication
Jaroslav Hajek <highegg@gmail.com>
parents: 9601
diff changeset
327 gripe_nonconformant ("operator *", a_nr, a_nc, b_nr, b_nc);
458
38cb88095913 [project @ 1994-06-06 00:41:10 by jwe]
jwe
parents:
diff changeset
328
3504
5eef8a2294bd [project @ 2000-02-01 10:06:51 by jwe]
jwe
parents: 3503
diff changeset
329 DiagMatrix c (a_nr, b_nc);
458
38cb88095913 [project @ 1994-06-06 00:41:10 by jwe]
jwe
parents:
diff changeset
330
9698
7c6d5d8c8d37 fix diag*diag multiplication
Jaroslav Hajek <highegg@gmail.com>
parents: 9601
diff changeset
331 octave_idx_type len = c.length (), lenm = len < a_nc ? len : a_nc;
458
38cb88095913 [project @ 1994-06-06 00:41:10 by jwe]
jwe
parents:
diff changeset
332
9698
7c6d5d8c8d37 fix diag*diag multiplication
Jaroslav Hajek <highegg@gmail.com>
parents: 9601
diff changeset
333 for (octave_idx_type i = 0; i < lenm; i++)
7c6d5d8c8d37 fix diag*diag multiplication
Jaroslav Hajek <highegg@gmail.com>
parents: 9601
diff changeset
334 c.dgxelem (i) = a.dgelem (i) * b.dgelem (i);
7c6d5d8c8d37 fix diag*diag multiplication
Jaroslav Hajek <highegg@gmail.com>
parents: 9601
diff changeset
335 for (octave_idx_type i = lenm; i < len; i++)
7c6d5d8c8d37 fix diag*diag multiplication
Jaroslav Hajek <highegg@gmail.com>
parents: 9601
diff changeset
336 c.dgxelem (i) = 0.0;
458
38cb88095913 [project @ 1994-06-06 00:41:10 by jwe]
jwe
parents:
diff changeset
337
38cb88095913 [project @ 1994-06-06 00:41:10 by jwe]
jwe
parents:
diff changeset
338 return c;
38cb88095913 [project @ 1994-06-06 00:41:10 by jwe]
jwe
parents:
diff changeset
339 }
38cb88095913 [project @ 1994-06-06 00:41:10 by jwe]
jwe
parents:
diff changeset
340
38cb88095913 [project @ 1994-06-06 00:41:10 by jwe]
jwe
parents:
diff changeset
341 // other operations
38cb88095913 [project @ 1994-06-06 00:41:10 by jwe]
jwe
parents:
diff changeset
342
8371
c3f7e2549abb make det & inv aware of diagonal & permutation matrices
Jaroslav Hajek <highegg@gmail.com>
parents: 8367
diff changeset
343 DET
c3f7e2549abb make det & inv aware of diagonal & permutation matrices
Jaroslav Hajek <highegg@gmail.com>
parents: 8367
diff changeset
344 DiagMatrix::determinant (void) const
c3f7e2549abb make det & inv aware of diagonal & permutation matrices
Jaroslav Hajek <highegg@gmail.com>
parents: 8367
diff changeset
345 {
c3f7e2549abb make det & inv aware of diagonal & permutation matrices
Jaroslav Hajek <highegg@gmail.com>
parents: 8367
diff changeset
346 DET det (1.0);
c3f7e2549abb make det & inv aware of diagonal & permutation matrices
Jaroslav Hajek <highegg@gmail.com>
parents: 8367
diff changeset
347 if (rows () != cols ())
c3f7e2549abb make det & inv aware of diagonal & permutation matrices
Jaroslav Hajek <highegg@gmail.com>
parents: 8367
diff changeset
348 {
c3f7e2549abb make det & inv aware of diagonal & permutation matrices
Jaroslav Hajek <highegg@gmail.com>
parents: 8367
diff changeset
349 (*current_liboctave_error_handler) ("determinant requires square matrix");
c3f7e2549abb make det & inv aware of diagonal & permutation matrices
Jaroslav Hajek <highegg@gmail.com>
parents: 8367
diff changeset
350 det = 0.0;
c3f7e2549abb make det & inv aware of diagonal & permutation matrices
Jaroslav Hajek <highegg@gmail.com>
parents: 8367
diff changeset
351 }
c3f7e2549abb make det & inv aware of diagonal & permutation matrices
Jaroslav Hajek <highegg@gmail.com>
parents: 8367
diff changeset
352 else
c3f7e2549abb make det & inv aware of diagonal & permutation matrices
Jaroslav Hajek <highegg@gmail.com>
parents: 8367
diff changeset
353 {
c3f7e2549abb make det & inv aware of diagonal & permutation matrices
Jaroslav Hajek <highegg@gmail.com>
parents: 8367
diff changeset
354 octave_idx_type len = length ();
c3f7e2549abb make det & inv aware of diagonal & permutation matrices
Jaroslav Hajek <highegg@gmail.com>
parents: 8367
diff changeset
355 for (octave_idx_type i = 0; i < len; i++)
c3f7e2549abb make det & inv aware of diagonal & permutation matrices
Jaroslav Hajek <highegg@gmail.com>
parents: 8367
diff changeset
356 det *= elem (i, i);
c3f7e2549abb make det & inv aware of diagonal & permutation matrices
Jaroslav Hajek <highegg@gmail.com>
parents: 8367
diff changeset
357 }
c3f7e2549abb make det & inv aware of diagonal & permutation matrices
Jaroslav Hajek <highegg@gmail.com>
parents: 8367
diff changeset
358
c3f7e2549abb make det & inv aware of diagonal & permutation matrices
Jaroslav Hajek <highegg@gmail.com>
parents: 8367
diff changeset
359 return det;
c3f7e2549abb make det & inv aware of diagonal & permutation matrices
Jaroslav Hajek <highegg@gmail.com>
parents: 8367
diff changeset
360 }
c3f7e2549abb make det & inv aware of diagonal & permutation matrices
Jaroslav Hajek <highegg@gmail.com>
parents: 8367
diff changeset
361
c3f7e2549abb make det & inv aware of diagonal & permutation matrices
Jaroslav Hajek <highegg@gmail.com>
parents: 8367
diff changeset
362 double
c3f7e2549abb make det & inv aware of diagonal & permutation matrices
Jaroslav Hajek <highegg@gmail.com>
parents: 8367
diff changeset
363 DiagMatrix::rcond (void) const
c3f7e2549abb make det & inv aware of diagonal & permutation matrices
Jaroslav Hajek <highegg@gmail.com>
parents: 8367
diff changeset
364 {
15448
0a0912a9ab6e Replace deprecated DiagArray2<T>::diag calls with DiagArray2<T>::extract_diag
Jordi Gutiérrez Hermoso <jordigh@octave.org>
parents: 15271
diff changeset
365 ColumnVector av = extract_diag (0).map<double> (fabs);
8371
c3f7e2549abb make det & inv aware of diagonal & permutation matrices
Jaroslav Hajek <highegg@gmail.com>
parents: 8367
diff changeset
366 double amx = av.max (), amn = av.min ();
c3f7e2549abb make det & inv aware of diagonal & permutation matrices
Jaroslav Hajek <highegg@gmail.com>
parents: 8367
diff changeset
367 return amx == 0 ? 0.0 : amn / amx;
c3f7e2549abb make det & inv aware of diagonal & permutation matrices
Jaroslav Hajek <highegg@gmail.com>
parents: 8367
diff changeset
368 }
8367
445d27d79f4e support permutation matrix objects
Jaroslav Hajek <highegg@gmail.com>
parents: 8366
diff changeset
369
3504
5eef8a2294bd [project @ 2000-02-01 10:06:51 by jwe]
jwe
parents: 3503
diff changeset
370 std::ostream&
5eef8a2294bd [project @ 2000-02-01 10:06:51 by jwe]
jwe
parents: 3503
diff changeset
371 operator << (std::ostream& os, const DiagMatrix& a)
458
38cb88095913 [project @ 1994-06-06 00:41:10 by jwe]
jwe
parents:
diff changeset
372 {
38cb88095913 [project @ 1994-06-06 00:41:10 by jwe]
jwe
parents:
diff changeset
373 // int field_width = os.precision () + 7;
1360
7eb93d12654c [project @ 1995-09-05 21:51:54 by jwe]
jwe
parents: 1315
diff changeset
374
5275
23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe]
jwe
parents: 5105
diff changeset
375 for (octave_idx_type i = 0; i < a.rows (); i++)
458
38cb88095913 [project @ 1994-06-06 00:41:10 by jwe]
jwe
parents:
diff changeset
376 {
5275
23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe]
jwe
parents: 5105
diff changeset
377 for (octave_idx_type j = 0; j < a.cols (); j++)
10314
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
378 {
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
379 if (i == j)
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
380 os << " " /* setw (field_width) */ << a.elem (i, i);
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
381 else
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
382 os << " " /* setw (field_width) */ << 0.0;
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
383 }
458
38cb88095913 [project @ 1994-06-06 00:41:10 by jwe]
jwe
parents:
diff changeset
384 os << "\n";
38cb88095913 [project @ 1994-06-06 00:41:10 by jwe]
jwe
parents:
diff changeset
385 }
38cb88095913 [project @ 1994-06-06 00:41:10 by jwe]
jwe
parents:
diff changeset
386 return os;
38cb88095913 [project @ 1994-06-06 00:41:10 by jwe]
jwe
parents:
diff changeset
387 }