Mercurial > octave-nkf

annotate liboctave/base-lu.cc @ 14193:72aebe619641 stable rc-3-6-0-0

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
3.6.0-rc0 release candidate * configure.ac (AC_INIT): Version is now 3.6.0-rc0. (OCTAVE_RELEASE_DATE): Now 2012-01-10. (OCTAVE_API_VERSION_NUMBER): Now 47.
author John W. Eaton <jwe@octave.org>
date Tue, 10 Jan 2012 16:43:41 -0500
parents 72c96de7a403
children 460a3c6d8bf1
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
1991
413f6a81868f [project @ 1996-03-03 00:40:53 by jwe]
jwe
parents:
diff changeset
1 /*
413f6a81868f [project @ 1996-03-03 00:40:53 by jwe]
jwe
parents:
diff changeset
2
14138
72c96de7a403 maint: update copyright notices for 2012
John W. Eaton <jwe@octave.org>
parents: 13217
diff changeset
3 Copyright (C) 1996-2012 John W. Eaton
10521
4d1fc073fbb7 add some missing copyright stmts
Jaroslav Hajek <highegg@gmail.com>
parents: 10350
diff changeset
4 Copyright (C) 2009 VZLU Prague
1991
413f6a81868f [project @ 1996-03-03 00:40:53 by jwe]
jwe
parents:
diff changeset
5
413f6a81868f [project @ 1996-03-03 00:40:53 by jwe]
jwe
parents:
diff changeset
6 This file is part of Octave.
413f6a81868f [project @ 1996-03-03 00:40:53 by jwe]
jwe
parents:
diff changeset
7
413f6a81868f [project @ 1996-03-03 00:40:53 by jwe]
jwe
parents:
diff changeset
8 Octave is free software; you can redistribute it and/or modify it
413f6a81868f [project @ 1996-03-03 00:40:53 by jwe]
jwe
parents:
diff changeset
9 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
10 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
11 option) any later version.
1991
413f6a81868f [project @ 1996-03-03 00:40:53 by jwe]
jwe
parents:
diff changeset
12
413f6a81868f [project @ 1996-03-03 00:40:53 by jwe]
jwe
parents:
diff changeset
13 Octave is distributed in the hope that it will be useful, but WITHOUT
413f6a81868f [project @ 1996-03-03 00:40:53 by jwe]
jwe
parents:
diff changeset
14 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
413f6a81868f [project @ 1996-03-03 00:40:53 by jwe]
jwe
parents:
diff changeset
15 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
413f6a81868f [project @ 1996-03-03 00:40:53 by jwe]
jwe
parents:
diff changeset
16 for more details.
413f6a81868f [project @ 1996-03-03 00:40:53 by jwe]
jwe
parents:
diff changeset
17
413f6a81868f [project @ 1996-03-03 00:40:53 by jwe]
jwe
parents:
diff changeset
18 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
19 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
20 <http://www.gnu.org/licenses/>.
1991
413f6a81868f [project @ 1996-03-03 00:40:53 by jwe]
jwe
parents:
diff changeset
21
413f6a81868f [project @ 1996-03-03 00:40:53 by jwe]
jwe
parents:
diff changeset
22 */
413f6a81868f [project @ 1996-03-03 00:40:53 by jwe]
jwe
parents:
diff changeset
23
413f6a81868f [project @ 1996-03-03 00:40:53 by jwe]
jwe
parents:
diff changeset
24 #ifdef HAVE_CONFIG_H
413f6a81868f [project @ 1996-03-03 00:40:53 by jwe]
jwe
parents:
diff changeset
25 #include <config.h>
413f6a81868f [project @ 1996-03-03 00:40:53 by jwe]
jwe
parents:
diff changeset
26 #endif
413f6a81868f [project @ 1996-03-03 00:40:53 by jwe]
jwe
parents:
diff changeset
27
413f6a81868f [project @ 1996-03-03 00:40:53 by jwe]
jwe
parents:
diff changeset
28 #include "base-lu.h"
413f6a81868f [project @ 1996-03-03 00:40:53 by jwe]
jwe
parents:
diff changeset
29
8367
445d27d79f4e support permutation matrix objects
Jaroslav Hajek <highegg@gmail.com>
parents: 7515
diff changeset
30 template <class lu_type>
11586
12df7854fa7c strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents: 11570
diff changeset
31 base_lu<lu_type>::base_lu (const lu_type& l, const lu_type& u,
9694
50db3c5175b5 allow unpacked form of LU
Jaroslav Hajek <highegg@gmail.com>
parents: 8920
diff changeset
32 const PermMatrix& p)
50db3c5175b5 allow unpacked form of LU
Jaroslav Hajek <highegg@gmail.com>
parents: 8920
diff changeset
33 : a_fact (u), l_fact (l), ipvt (p.pvec ())
50db3c5175b5 allow unpacked form of LU
Jaroslav Hajek <highegg@gmail.com>
parents: 8920
diff changeset
34 {
50db3c5175b5 allow unpacked form of LU
Jaroslav Hajek <highegg@gmail.com>
parents: 8920
diff changeset
35 if (l.columns () != u.rows ())
50db3c5175b5 allow unpacked form of LU
Jaroslav Hajek <highegg@gmail.com>
parents: 8920
diff changeset
36 (*current_liboctave_error_handler) ("lu: dimension mismatch");
50db3c5175b5 allow unpacked form of LU
Jaroslav Hajek <highegg@gmail.com>
parents: 8920
diff changeset
37 }
50db3c5175b5 allow unpacked form of LU
Jaroslav Hajek <highegg@gmail.com>
parents: 8920
diff changeset
38
50db3c5175b5 allow unpacked form of LU
Jaroslav Hajek <highegg@gmail.com>
parents: 8920
diff changeset
39 template <class lu_type>
50db3c5175b5 allow unpacked form of LU
Jaroslav Hajek <highegg@gmail.com>
parents: 8920
diff changeset
40 bool
50db3c5175b5 allow unpacked form of LU
Jaroslav Hajek <highegg@gmail.com>
parents: 8920
diff changeset
41 base_lu <lu_type> :: packed (void) const
50db3c5175b5 allow unpacked form of LU
Jaroslav Hajek <highegg@gmail.com>
parents: 8920
diff changeset
42 {
50db3c5175b5 allow unpacked form of LU
Jaroslav Hajek <highegg@gmail.com>
parents: 8920
diff changeset
43 return l_fact.dims () == dim_vector ();
50db3c5175b5 allow unpacked form of LU
Jaroslav Hajek <highegg@gmail.com>
parents: 8920
diff changeset
44 }
50db3c5175b5 allow unpacked form of LU
Jaroslav Hajek <highegg@gmail.com>
parents: 8920
diff changeset
45
50db3c5175b5 allow unpacked form of LU
Jaroslav Hajek <highegg@gmail.com>
parents: 8920
diff changeset
46 template <class lu_type>
50db3c5175b5 allow unpacked form of LU
Jaroslav Hajek <highegg@gmail.com>
parents: 8920
diff changeset
47 void
50db3c5175b5 allow unpacked form of LU
Jaroslav Hajek <highegg@gmail.com>
parents: 8920
diff changeset
48 base_lu <lu_type> :: unpack (void)
50db3c5175b5 allow unpacked form of LU
Jaroslav Hajek <highegg@gmail.com>
parents: 8920
diff changeset
49 {
50db3c5175b5 allow unpacked form of LU
Jaroslav Hajek <highegg@gmail.com>
parents: 8920
diff changeset
50 if (packed ())
50db3c5175b5 allow unpacked form of LU
Jaroslav Hajek <highegg@gmail.com>
parents: 8920
diff changeset
51 {
50db3c5175b5 allow unpacked form of LU
Jaroslav Hajek <highegg@gmail.com>
parents: 8920
diff changeset
52 l_fact = L ();
50db3c5175b5 allow unpacked form of LU
Jaroslav Hajek <highegg@gmail.com>
parents: 8920
diff changeset
53 a_fact = U (); // FIXME: sub-optimal
9697
51c17bd18563 omission in base-lu::unpack
Jaroslav Hajek <highegg@gmail.com>
parents: 9694
diff changeset
54 ipvt = getp ();
9694
50db3c5175b5 allow unpacked form of LU
Jaroslav Hajek <highegg@gmail.com>
parents: 8920
diff changeset
55 }
50db3c5175b5 allow unpacked form of LU
Jaroslav Hajek <highegg@gmail.com>
parents: 8920
diff changeset
56 }
50db3c5175b5 allow unpacked form of LU
Jaroslav Hajek <highegg@gmail.com>
parents: 8920
diff changeset
57
50db3c5175b5 allow unpacked form of LU
Jaroslav Hajek <highegg@gmail.com>
parents: 8920
diff changeset
58 template <class lu_type>
1991
413f6a81868f [project @ 1996-03-03 00:40:53 by jwe]
jwe
parents:
diff changeset
59 lu_type
8367
445d27d79f4e support permutation matrix objects
Jaroslav Hajek <highegg@gmail.com>
parents: 7515
diff changeset
60 base_lu <lu_type> :: L (void) const
1991
413f6a81868f [project @ 1996-03-03 00:40:53 by jwe]
jwe
parents:
diff changeset
61 {
9694
50db3c5175b5 allow unpacked form of LU
Jaroslav Hajek <highegg@gmail.com>
parents: 8920
diff changeset
62 if (packed ())
1991
413f6a81868f [project @ 1996-03-03 00:40:53 by jwe]
jwe
parents:
diff changeset
63 {
9694
50db3c5175b5 allow unpacked form of LU
Jaroslav Hajek <highegg@gmail.com>
parents: 8920
diff changeset
64 octave_idx_type a_nr = a_fact.rows ();
50db3c5175b5 allow unpacked form of LU
Jaroslav Hajek <highegg@gmail.com>
parents: 8920
diff changeset
65 octave_idx_type a_nc = a_fact.cols ();
50db3c5175b5 allow unpacked form of LU
Jaroslav Hajek <highegg@gmail.com>
parents: 8920
diff changeset
66 octave_idx_type mn = (a_nr < a_nc ? a_nr : a_nc);
50db3c5175b5 allow unpacked form of LU
Jaroslav Hajek <highegg@gmail.com>
parents: 8920
diff changeset
67
50db3c5175b5 allow unpacked form of LU
Jaroslav Hajek <highegg@gmail.com>
parents: 8920
diff changeset
68 lu_type l (a_nr, mn, lu_elt_type (0.0));
4811
198f3712c692 [project @ 2004-03-03 19:24:33 by jwe]
jwe
parents: 4329
diff changeset
69
9694
50db3c5175b5 allow unpacked form of LU
Jaroslav Hajek <highegg@gmail.com>
parents: 8920
diff changeset
70 for (octave_idx_type i = 0; i < a_nr; i++)
50db3c5175b5 allow unpacked form of LU
Jaroslav Hajek <highegg@gmail.com>
parents: 8920
diff changeset
71 {
50db3c5175b5 allow unpacked form of LU
Jaroslav Hajek <highegg@gmail.com>
parents: 8920
diff changeset
72 if (i < a_nc)
50db3c5175b5 allow unpacked form of LU
Jaroslav Hajek <highegg@gmail.com>
parents: 8920
diff changeset
73 l.xelem (i, i) = 1.0;
50db3c5175b5 allow unpacked form of LU
Jaroslav Hajek <highegg@gmail.com>
parents: 8920
diff changeset
74
50db3c5175b5 allow unpacked form of LU
Jaroslav Hajek <highegg@gmail.com>
parents: 8920
diff changeset
75 for (octave_idx_type j = 0; j < (i < a_nc ? i : a_nc); j++)
50db3c5175b5 allow unpacked form of LU
Jaroslav Hajek <highegg@gmail.com>
parents: 8920
diff changeset
76 l.xelem (i, j) = a_fact.xelem (i, j);
50db3c5175b5 allow unpacked form of LU
Jaroslav Hajek <highegg@gmail.com>
parents: 8920
diff changeset
77 }
50db3c5175b5 allow unpacked form of LU
Jaroslav Hajek <highegg@gmail.com>
parents: 8920
diff changeset
78
50db3c5175b5 allow unpacked form of LU
Jaroslav Hajek <highegg@gmail.com>
parents: 8920
diff changeset
79 return l;
1991
413f6a81868f [project @ 1996-03-03 00:40:53 by jwe]
jwe
parents:
diff changeset
80 }
9694
50db3c5175b5 allow unpacked form of LU
Jaroslav Hajek <highegg@gmail.com>
parents: 8920
diff changeset
81 else
50db3c5175b5 allow unpacked form of LU
Jaroslav Hajek <highegg@gmail.com>
parents: 8920
diff changeset
82 return l_fact;
1991
413f6a81868f [project @ 1996-03-03 00:40:53 by jwe]
jwe
parents:
diff changeset
83 }
413f6a81868f [project @ 1996-03-03 00:40:53 by jwe]
jwe
parents:
diff changeset
84
8367
445d27d79f4e support permutation matrix objects
Jaroslav Hajek <highegg@gmail.com>
parents: 7515
diff changeset
85 template <class lu_type>
1991
413f6a81868f [project @ 1996-03-03 00:40:53 by jwe]
jwe
parents:
diff changeset
86 lu_type
8367
445d27d79f4e support permutation matrix objects
Jaroslav Hajek <highegg@gmail.com>
parents: 7515
diff changeset
87 base_lu <lu_type> :: U (void) const
1991
413f6a81868f [project @ 1996-03-03 00:40:53 by jwe]
jwe
parents:
diff changeset
88 {
9694
50db3c5175b5 allow unpacked form of LU
Jaroslav Hajek <highegg@gmail.com>
parents: 8920
diff changeset
89 if (packed ())
50db3c5175b5 allow unpacked form of LU
Jaroslav Hajek <highegg@gmail.com>
parents: 8920
diff changeset
90 {
50db3c5175b5 allow unpacked form of LU
Jaroslav Hajek <highegg@gmail.com>
parents: 8920
diff changeset
91 octave_idx_type a_nr = a_fact.rows ();
50db3c5175b5 allow unpacked form of LU
Jaroslav Hajek <highegg@gmail.com>
parents: 8920
diff changeset
92 octave_idx_type a_nc = a_fact.cols ();
50db3c5175b5 allow unpacked form of LU
Jaroslav Hajek <highegg@gmail.com>
parents: 8920
diff changeset
93 octave_idx_type mn = (a_nr < a_nc ? a_nr : a_nc);
1991
413f6a81868f [project @ 1996-03-03 00:40:53 by jwe]
jwe
parents:
diff changeset
94
9694
50db3c5175b5 allow unpacked form of LU
Jaroslav Hajek <highegg@gmail.com>
parents: 8920
diff changeset
95 lu_type u (mn, a_nc, lu_elt_type (0.0));
50db3c5175b5 allow unpacked form of LU
Jaroslav Hajek <highegg@gmail.com>
parents: 8920
diff changeset
96
50db3c5175b5 allow unpacked form of LU
Jaroslav Hajek <highegg@gmail.com>
parents: 8920
diff changeset
97 for (octave_idx_type i = 0; i < mn; i++)
50db3c5175b5 allow unpacked form of LU
Jaroslav Hajek <highegg@gmail.com>
parents: 8920
diff changeset
98 {
50db3c5175b5 allow unpacked form of LU
Jaroslav Hajek <highegg@gmail.com>
parents: 8920
diff changeset
99 for (octave_idx_type j = i; j < a_nc; j++)
50db3c5175b5 allow unpacked form of LU
Jaroslav Hajek <highegg@gmail.com>
parents: 8920
diff changeset
100 u.xelem (i, j) = a_fact.xelem (i, j);
50db3c5175b5 allow unpacked form of LU
Jaroslav Hajek <highegg@gmail.com>
parents: 8920
diff changeset
101 }
4329
d53c33d93440 [project @ 2003-02-18 20:00:48 by jwe]
jwe
parents: 4192
diff changeset
102
9694
50db3c5175b5 allow unpacked form of LU
Jaroslav Hajek <highegg@gmail.com>
parents: 8920
diff changeset
103 return u;
1991
413f6a81868f [project @ 1996-03-03 00:40:53 by jwe]
jwe
parents:
diff changeset
104 }
9694
50db3c5175b5 allow unpacked form of LU
Jaroslav Hajek <highegg@gmail.com>
parents: 8920
diff changeset
105 else
50db3c5175b5 allow unpacked form of LU
Jaroslav Hajek <highegg@gmail.com>
parents: 8920
diff changeset
106 return a_fact;
50db3c5175b5 allow unpacked form of LU
Jaroslav Hajek <highegg@gmail.com>
parents: 8920
diff changeset
107 }
1991
413f6a81868f [project @ 1996-03-03 00:40:53 by jwe]
jwe
parents:
diff changeset
108
9694
50db3c5175b5 allow unpacked form of LU
Jaroslav Hajek <highegg@gmail.com>
parents: 8920
diff changeset
109 template <class lu_type>
50db3c5175b5 allow unpacked form of LU
Jaroslav Hajek <highegg@gmail.com>
parents: 8920
diff changeset
110 lu_type
50db3c5175b5 allow unpacked form of LU
Jaroslav Hajek <highegg@gmail.com>
parents: 8920
diff changeset
111 base_lu <lu_type> :: Y (void) const
50db3c5175b5 allow unpacked form of LU
Jaroslav Hajek <highegg@gmail.com>
parents: 8920
diff changeset
112 {
50db3c5175b5 allow unpacked form of LU
Jaroslav Hajek <highegg@gmail.com>
parents: 8920
diff changeset
113 if (! packed ())
11590
4ced6b90fffb style fixes for warning and error messages in source files
John W. Eaton <jwe@octave.org>
parents: 11586
diff changeset
114 (*current_liboctave_error_handler) ("lu: Y() not implemented for unpacked form");
9694
50db3c5175b5 allow unpacked form of LU
Jaroslav Hajek <highegg@gmail.com>
parents: 8920
diff changeset
115 return a_fact;
1991
413f6a81868f [project @ 1996-03-03 00:40:53 by jwe]
jwe
parents:
diff changeset
116 }
413f6a81868f [project @ 1996-03-03 00:40:53 by jwe]
jwe
parents:
diff changeset
117
8367
445d27d79f4e support permutation matrix objects
Jaroslav Hajek <highegg@gmail.com>
parents: 7515
diff changeset
118 template <class lu_type>
445d27d79f4e support permutation matrix objects
Jaroslav Hajek <highegg@gmail.com>
parents: 7515
diff changeset
119 Array<octave_idx_type>
445d27d79f4e support permutation matrix objects
Jaroslav Hajek <highegg@gmail.com>
parents: 7515
diff changeset
120 base_lu <lu_type> :: getp (void) const
1991
413f6a81868f [project @ 1996-03-03 00:40:53 by jwe]
jwe
parents:
diff changeset
121 {
9694
50db3c5175b5 allow unpacked form of LU
Jaroslav Hajek <highegg@gmail.com>
parents: 8920
diff changeset
122 if (packed ())
1991
413f6a81868f [project @ 1996-03-03 00:40:53 by jwe]
jwe
parents:
diff changeset
123 {
9694
50db3c5175b5 allow unpacked form of LU
Jaroslav Hajek <highegg@gmail.com>
parents: 8920
diff changeset
124 octave_idx_type a_nr = a_fact.rows ();
50db3c5175b5 allow unpacked form of LU
Jaroslav Hajek <highegg@gmail.com>
parents: 8920
diff changeset
125
11570
57632dea2446 attempt better backward compatibility for Array constructors
John W. Eaton <jwe@octave.org>
parents: 11523
diff changeset
126 Array<octave_idx_type> pvt (dim_vector (a_nr, 1));
9694
50db3c5175b5 allow unpacked form of LU
Jaroslav Hajek <highegg@gmail.com>
parents: 8920
diff changeset
127
50db3c5175b5 allow unpacked form of LU
Jaroslav Hajek <highegg@gmail.com>
parents: 8920
diff changeset
128 for (octave_idx_type i = 0; i < a_nr; i++)
50db3c5175b5 allow unpacked form of LU
Jaroslav Hajek <highegg@gmail.com>
parents: 8920
diff changeset
129 pvt.xelem (i) = i;
50db3c5175b5 allow unpacked form of LU
Jaroslav Hajek <highegg@gmail.com>
parents: 8920
diff changeset
130
50db3c5175b5 allow unpacked form of LU
Jaroslav Hajek <highegg@gmail.com>
parents: 8920
diff changeset
131 for (octave_idx_type i = 0; i < ipvt.length(); i++)
50db3c5175b5 allow unpacked form of LU
Jaroslav Hajek <highegg@gmail.com>
parents: 8920
diff changeset
132 {
50db3c5175b5 allow unpacked form of LU
Jaroslav Hajek <highegg@gmail.com>
parents: 8920
diff changeset
133 octave_idx_type k = ipvt.xelem (i);
1991
413f6a81868f [project @ 1996-03-03 00:40:53 by jwe]
jwe
parents:
diff changeset
134
9694
50db3c5175b5 allow unpacked form of LU
Jaroslav Hajek <highegg@gmail.com>
parents: 8920
diff changeset
135 if (k != i)
50db3c5175b5 allow unpacked form of LU
Jaroslav Hajek <highegg@gmail.com>
parents: 8920
diff changeset
136 {
50db3c5175b5 allow unpacked form of LU
Jaroslav Hajek <highegg@gmail.com>
parents: 8920
diff changeset
137 octave_idx_type tmp = pvt.xelem (k);
50db3c5175b5 allow unpacked form of LU
Jaroslav Hajek <highegg@gmail.com>
parents: 8920
diff changeset
138 pvt.xelem (k) = pvt.xelem (i);
50db3c5175b5 allow unpacked form of LU
Jaroslav Hajek <highegg@gmail.com>
parents: 8920
diff changeset
139 pvt.xelem (i) = tmp;
50db3c5175b5 allow unpacked form of LU
Jaroslav Hajek <highegg@gmail.com>
parents: 8920
diff changeset
140 }
50db3c5175b5 allow unpacked form of LU
Jaroslav Hajek <highegg@gmail.com>
parents: 8920
diff changeset
141 }
50db3c5175b5 allow unpacked form of LU
Jaroslav Hajek <highegg@gmail.com>
parents: 8920
diff changeset
142
50db3c5175b5 allow unpacked form of LU
Jaroslav Hajek <highegg@gmail.com>
parents: 8920
diff changeset
143 return pvt;
1991
413f6a81868f [project @ 1996-03-03 00:40:53 by jwe]
jwe
parents:
diff changeset
144 }
9694
50db3c5175b5 allow unpacked form of LU
Jaroslav Hajek <highegg@gmail.com>
parents: 8920
diff changeset
145 else
50db3c5175b5 allow unpacked form of LU
Jaroslav Hajek <highegg@gmail.com>
parents: 8920
diff changeset
146 return ipvt;
1991
413f6a81868f [project @ 1996-03-03 00:40:53 by jwe]
jwe
parents:
diff changeset
147 }
413f6a81868f [project @ 1996-03-03 00:40:53 by jwe]
jwe
parents:
diff changeset
148
8367
445d27d79f4e support permutation matrix objects
Jaroslav Hajek <highegg@gmail.com>
parents: 7515
diff changeset
149 template <class lu_type>
445d27d79f4e support permutation matrix objects
Jaroslav Hajek <highegg@gmail.com>
parents: 7515
diff changeset
150 PermMatrix
445d27d79f4e support permutation matrix objects
Jaroslav Hajek <highegg@gmail.com>
parents: 7515
diff changeset
151 base_lu <lu_type> :: P (void) const
445d27d79f4e support permutation matrix objects
Jaroslav Hajek <highegg@gmail.com>
parents: 7515
diff changeset
152 {
445d27d79f4e support permutation matrix objects
Jaroslav Hajek <highegg@gmail.com>
parents: 7515
diff changeset
153 return PermMatrix (getp (), false);
445d27d79f4e support permutation matrix objects
Jaroslav Hajek <highegg@gmail.com>
parents: 7515
diff changeset
154 }
445d27d79f4e support permutation matrix objects
Jaroslav Hajek <highegg@gmail.com>
parents: 7515
diff changeset
155
445d27d79f4e support permutation matrix objects
Jaroslav Hajek <highegg@gmail.com>
parents: 7515
diff changeset
156 template <class lu_type>
7515
f3c00dc0912b Eliminate the rest of the dispatched sparse functions
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
157 ColumnVector
8367
445d27d79f4e support permutation matrix objects
Jaroslav Hajek <highegg@gmail.com>
parents: 7515
diff changeset
158 base_lu <lu_type> :: P_vec (void) const
7515
f3c00dc0912b Eliminate the rest of the dispatched sparse functions
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
159 {
f3c00dc0912b Eliminate the rest of the dispatched sparse functions
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
160 octave_idx_type a_nr = a_fact.rows ();
f3c00dc0912b Eliminate the rest of the dispatched sparse functions
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
161
8367
445d27d79f4e support permutation matrix objects
Jaroslav Hajek <highegg@gmail.com>
parents: 7515
diff changeset
162 ColumnVector p (a_nr);
7515
f3c00dc0912b Eliminate the rest of the dispatched sparse functions
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
163
8367
445d27d79f4e support permutation matrix objects
Jaroslav Hajek <highegg@gmail.com>
parents: 7515
diff changeset
164 Array<octave_idx_type> pvt = getp ();
7515
f3c00dc0912b Eliminate the rest of the dispatched sparse functions
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
165
f3c00dc0912b Eliminate the rest of the dispatched sparse functions
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
166 for (octave_idx_type i = 0; i < a_nr; i++)
f3c00dc0912b Eliminate the rest of the dispatched sparse functions
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
167 p.xelem (i) = static_cast<double> (pvt.xelem (i) + 1);
f3c00dc0912b Eliminate the rest of the dispatched sparse functions
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
168
f3c00dc0912b Eliminate the rest of the dispatched sparse functions
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
169 return p;
f3c00dc0912b Eliminate the rest of the dispatched sparse functions
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
170 }
f3c00dc0912b Eliminate the rest of the dispatched sparse functions
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
171
9715
9f27172fbd1e auto-set MatrixType from certain functions
Jaroslav Hajek <highegg@gmail.com>
parents: 9697
diff changeset
172 template <class lu_type>
9f27172fbd1e auto-set MatrixType from certain functions
Jaroslav Hajek <highegg@gmail.com>
parents: 9697
diff changeset
173 bool
9f27172fbd1e auto-set MatrixType from certain functions
Jaroslav Hajek <highegg@gmail.com>
parents: 9697
diff changeset
174 base_lu<lu_type>::regular (void) const
9f27172fbd1e auto-set MatrixType from certain functions
Jaroslav Hajek <highegg@gmail.com>
parents: 9697
diff changeset
175 {
13217
08ba694723f5 fix warnings for unused but set variables
John W. Eaton <jwe@octave.org>
parents: 11590
diff changeset
176 bool retval = true;
08ba694723f5 fix warnings for unused but set variables
John W. Eaton <jwe@octave.org>
parents: 11590
diff changeset
177
9715
9f27172fbd1e auto-set MatrixType from certain functions
Jaroslav Hajek <highegg@gmail.com>
parents: 9697
diff changeset
178 octave_idx_type k = std::min (a_fact.rows (), a_fact.columns ());
13217
08ba694723f5 fix warnings for unused but set variables
John W. Eaton <jwe@octave.org>
parents: 11590
diff changeset
179
9715
9f27172fbd1e auto-set MatrixType from certain functions
Jaroslav Hajek <highegg@gmail.com>
parents: 9697
diff changeset
180 for (octave_idx_type i = 0; i < k; i++)
13217
08ba694723f5 fix warnings for unused but set variables
John W. Eaton <jwe@octave.org>
parents: 11590
diff changeset
181 {
08ba694723f5 fix warnings for unused but set variables
John W. Eaton <jwe@octave.org>
parents: 11590
diff changeset
182 if (a_fact(i, i) == lu_elt_type ())
08ba694723f5 fix warnings for unused but set variables
John W. Eaton <jwe@octave.org>
parents: 11590
diff changeset
183 {
08ba694723f5 fix warnings for unused but set variables
John W. Eaton <jwe@octave.org>
parents: 11590
diff changeset
184 retval = false;
08ba694723f5 fix warnings for unused but set variables
John W. Eaton <jwe@octave.org>
parents: 11590
diff changeset
185 break;
08ba694723f5 fix warnings for unused but set variables
John W. Eaton <jwe@octave.org>
parents: 11590
diff changeset
186 }
08ba694723f5 fix warnings for unused but set variables
John W. Eaton <jwe@octave.org>
parents: 11590
diff changeset
187 }
9715
9f27172fbd1e auto-set MatrixType from certain functions
Jaroslav Hajek <highegg@gmail.com>
parents: 9697
diff changeset
188
13217
08ba694723f5 fix warnings for unused but set variables
John W. Eaton <jwe@octave.org>
parents: 11590
diff changeset
189 return retval;
9715
9f27172fbd1e auto-set MatrixType from certain functions
Jaroslav Hajek <highegg@gmail.com>
parents: 9697
diff changeset
190 }