Mercurial > octave
annotate libinterp/corefcn/inv.cc @ 30313:98400baa509f
Return Inf for inv(0) for compatibility with division operator and Matlab (bug #52285).
* CMatrix.cc, dMatrix.cc, fCMatrix.cc, fMatrix.cc (inverse): Check early
for MatrixType::Diagonal which implies a scalar. In scalar case, just
calculate 1 / *this.
* inv.cc (Finverse): Add BIST tests for new behavior.
author | Rik <rik@octave.org> |
---|---|
date | Sun, 21 Nov 2021 16:53:49 -0800 |
parents | 7d6709900da7 |
children | 91c6288781ba 117ebe363f56 |
rev | line source |
---|---|
27923
bd51beb6205e
update formatting of copyright notices
John W. Eaton <jwe@octave.org>
parents:
27919
diff
changeset
|
1 //////////////////////////////////////////////////////////////////////// |
bd51beb6205e
update formatting of copyright notices
John W. Eaton <jwe@octave.org>
parents:
27919
diff
changeset
|
2 // |
29358
0a5b15007766
update Octave Project Developers copyright for the new year
John W. Eaton <jwe@octave.org>
parents:
27923
diff
changeset
|
3 // Copyright (C) 1996-2021 The Octave Project Developers |
27923
bd51beb6205e
update formatting of copyright notices
John W. Eaton <jwe@octave.org>
parents:
27919
diff
changeset
|
4 // |
bd51beb6205e
update formatting of copyright notices
John W. Eaton <jwe@octave.org>
parents:
27919
diff
changeset
|
5 // See the file COPYRIGHT.md in the top-level directory of this |
bd51beb6205e
update formatting of copyright notices
John W. Eaton <jwe@octave.org>
parents:
27919
diff
changeset
|
6 // distribution or <https://octave.org/copyright/>. |
bd51beb6205e
update formatting of copyright notices
John W. Eaton <jwe@octave.org>
parents:
27919
diff
changeset
|
7 // |
bd51beb6205e
update formatting of copyright notices
John W. Eaton <jwe@octave.org>
parents:
27919
diff
changeset
|
8 // This file is part of Octave. |
bd51beb6205e
update formatting of copyright notices
John W. Eaton <jwe@octave.org>
parents:
27919
diff
changeset
|
9 // |
bd51beb6205e
update formatting of copyright notices
John W. Eaton <jwe@octave.org>
parents:
27919
diff
changeset
|
10 // Octave is free software: you can redistribute it and/or modify it |
bd51beb6205e
update formatting of copyright notices
John W. Eaton <jwe@octave.org>
parents:
27919
diff
changeset
|
11 // under the terms of the GNU General Public License as published by |
bd51beb6205e
update formatting of copyright notices
John W. Eaton <jwe@octave.org>
parents:
27919
diff
changeset
|
12 // the Free Software Foundation, either version 3 of the License, or |
bd51beb6205e
update formatting of copyright notices
John W. Eaton <jwe@octave.org>
parents:
27919
diff
changeset
|
13 // (at your option) any later version. |
bd51beb6205e
update formatting of copyright notices
John W. Eaton <jwe@octave.org>
parents:
27919
diff
changeset
|
14 // |
bd51beb6205e
update formatting of copyright notices
John W. Eaton <jwe@octave.org>
parents:
27919
diff
changeset
|
15 // Octave is distributed in the hope that it will be useful, but |
bd51beb6205e
update formatting of copyright notices
John W. Eaton <jwe@octave.org>
parents:
27919
diff
changeset
|
16 // WITHOUT ANY WARRANTY; without even the implied warranty of |
bd51beb6205e
update formatting of copyright notices
John W. Eaton <jwe@octave.org>
parents:
27919
diff
changeset
|
17 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
bd51beb6205e
update formatting of copyright notices
John W. Eaton <jwe@octave.org>
parents:
27919
diff
changeset
|
18 // GNU General Public License for more details. |
bd51beb6205e
update formatting of copyright notices
John W. Eaton <jwe@octave.org>
parents:
27919
diff
changeset
|
19 // |
bd51beb6205e
update formatting of copyright notices
John W. Eaton <jwe@octave.org>
parents:
27919
diff
changeset
|
20 // You should have received a copy of the GNU General Public License |
bd51beb6205e
update formatting of copyright notices
John W. Eaton <jwe@octave.org>
parents:
27919
diff
changeset
|
21 // along with Octave; see the file COPYING. If not, see |
bd51beb6205e
update formatting of copyright notices
John W. Eaton <jwe@octave.org>
parents:
27919
diff
changeset
|
22 // <https://www.gnu.org/licenses/>. |
bd51beb6205e
update formatting of copyright notices
John W. Eaton <jwe@octave.org>
parents:
27919
diff
changeset
|
23 // |
bd51beb6205e
update formatting of copyright notices
John W. Eaton <jwe@octave.org>
parents:
27919
diff
changeset
|
24 //////////////////////////////////////////////////////////////////////// |
2928 | 25 |
21724
aba2e6293dd8
use "#if ..." consistently instead of "#ifdef" and "#ifndef"
John W. Eaton <jwe@octave.org>
parents:
21301
diff
changeset
|
26 #if defined (HAVE_CONFIG_H) |
21301
40de9f8f23a6
Use '#include "config.h"' rather than <config.h>.
Rik <rik@octave.org>
parents:
21200
diff
changeset
|
27 # include "config.h" |
2928 | 28 #endif |
29 | |
15039
e753177cde93
maint: Move non-dynamically linked functions from DLD-FUNCTIONS/ to corefcn/ directory
Rik <rik@octave.org>
parents:
14501
diff
changeset
|
30 #include "defun.h" |
2928 | 31 #include "error.h" |
21100
e39e05d90788
Switch gripe_XXX to either err_XXX or warn_XXX naming scheme.
Rik <rik@octave.org>
parents:
21024
diff
changeset
|
32 #include "errwarn.h" |
20940
48b2ad5ee801
maint: Rename oct-obj.[cc|h] to ovl.[cc|h] for clarity.
Rik <rik@octave.org>
parents:
20898
diff
changeset
|
33 #include "ovl.h" |
8366
8b1a2555c4e2
implement diagonal matrix objects
Jaroslav Hajek <highegg@gmail.com>
parents:
7911
diff
changeset
|
34 #include "ops.h" |
8b1a2555c4e2
implement diagonal matrix objects
Jaroslav Hajek <highegg@gmail.com>
parents:
7911
diff
changeset
|
35 #include "ov-re-diag.h" |
8b1a2555c4e2
implement diagonal matrix objects
Jaroslav Hajek <highegg@gmail.com>
parents:
7911
diff
changeset
|
36 #include "ov-cx-diag.h" |
8b1a2555c4e2
implement diagonal matrix objects
Jaroslav Hajek <highegg@gmail.com>
parents:
7911
diff
changeset
|
37 #include "ov-flt-re-diag.h" |
8b1a2555c4e2
implement diagonal matrix objects
Jaroslav Hajek <highegg@gmail.com>
parents:
7911
diff
changeset
|
38 #include "ov-flt-cx-diag.h" |
8371
c3f7e2549abb
make det & inv aware of diagonal & permutation matrices
Jaroslav Hajek <highegg@gmail.com>
parents:
8366
diff
changeset
|
39 #include "ov-perm.h" |
2928 | 40 |
29958
32c3a5805893
move DEFUN and DEFMETHOD functions inside octave namespace
John W. Eaton <jwe@octave.org>
parents:
29359
diff
changeset
|
41 OCTAVE_NAMESPACE_BEGIN |
32c3a5805893
move DEFUN and DEFMETHOD functions inside octave namespace
John W. Eaton <jwe@octave.org>
parents:
29359
diff
changeset
|
42 |
15039
e753177cde93
maint: Move non-dynamically linked functions from DLD-FUNCTIONS/ to corefcn/ directory
Rik <rik@octave.org>
parents:
14501
diff
changeset
|
43 DEFUN (inv, args, nargout, |
21966
112b20240c87
move docstrings in C++ files out of C strings and into comments
John W. Eaton <jwe@octave.org>
parents:
21724
diff
changeset
|
44 doc: /* -*- texinfo -*- |
112b20240c87
move docstrings in C++ files out of C strings and into comments
John W. Eaton <jwe@octave.org>
parents:
21724
diff
changeset
|
45 @deftypefn {} {@var{x} =} inv (@var{A}) |
112b20240c87
move docstrings in C++ files out of C strings and into comments
John W. Eaton <jwe@octave.org>
parents:
21724
diff
changeset
|
46 @deftypefnx {} {[@var{x}, @var{rcond}] =} inv (@var{A}) |
27253
7f5008aec7a1
doc: Add function index entry for alias "inverse" bug #56629).
Rik <rik@octave.org>
parents:
26376
diff
changeset
|
47 @deftypefnx {} {[@dots{}] =} inverse (@dots{}) |
21966
112b20240c87
move docstrings in C++ files out of C strings and into comments
John W. Eaton <jwe@octave.org>
parents:
21724
diff
changeset
|
48 Compute the inverse of the square matrix @var{A}. |
112b20240c87
move docstrings in C++ files out of C strings and into comments
John W. Eaton <jwe@octave.org>
parents:
21724
diff
changeset
|
49 |
112b20240c87
move docstrings in C++ files out of C strings and into comments
John W. Eaton <jwe@octave.org>
parents:
21724
diff
changeset
|
50 Return an estimate of the reciprocal condition number if requested, |
112b20240c87
move docstrings in C++ files out of C strings and into comments
John W. Eaton <jwe@octave.org>
parents:
21724
diff
changeset
|
51 otherwise warn of an ill-conditioned matrix if the reciprocal condition |
112b20240c87
move docstrings in C++ files out of C strings and into comments
John W. Eaton <jwe@octave.org>
parents:
21724
diff
changeset
|
52 number is small. |
112b20240c87
move docstrings in C++ files out of C strings and into comments
John W. Eaton <jwe@octave.org>
parents:
21724
diff
changeset
|
53 |
112b20240c87
move docstrings in C++ files out of C strings and into comments
John W. Eaton <jwe@octave.org>
parents:
21724
diff
changeset
|
54 In general it is best to avoid calculating the inverse of a matrix directly. |
112b20240c87
move docstrings in C++ files out of C strings and into comments
John W. Eaton <jwe@octave.org>
parents:
21724
diff
changeset
|
55 For example, it is both faster and more accurate to solve systems of |
112b20240c87
move docstrings in C++ files out of C strings and into comments
John W. Eaton <jwe@octave.org>
parents:
21724
diff
changeset
|
56 equations (@var{A}*@math{x} = @math{b}) with |
112b20240c87
move docstrings in C++ files out of C strings and into comments
John W. Eaton <jwe@octave.org>
parents:
21724
diff
changeset
|
57 @code{@var{y} = @var{A} \ @math{b}}, rather than |
112b20240c87
move docstrings in C++ files out of C strings and into comments
John W. Eaton <jwe@octave.org>
parents:
21724
diff
changeset
|
58 @code{@var{y} = inv (@var{A}) * @math{b}}. |
112b20240c87
move docstrings in C++ files out of C strings and into comments
John W. Eaton <jwe@octave.org>
parents:
21724
diff
changeset
|
59 |
112b20240c87
move docstrings in C++ files out of C strings and into comments
John W. Eaton <jwe@octave.org>
parents:
21724
diff
changeset
|
60 If called with a sparse matrix, then in general @var{x} will be a full |
112b20240c87
move docstrings in C++ files out of C strings and into comments
John W. Eaton <jwe@octave.org>
parents:
21724
diff
changeset
|
61 matrix requiring significantly more storage. Avoid forming the inverse of a |
112b20240c87
move docstrings in C++ files out of C strings and into comments
John W. Eaton <jwe@octave.org>
parents:
21724
diff
changeset
|
62 sparse matrix if possible. |
27253
7f5008aec7a1
doc: Add function index entry for alias "inverse" bug #56629).
Rik <rik@octave.org>
parents:
26376
diff
changeset
|
63 |
7f5008aec7a1
doc: Add function index entry for alias "inverse" bug #56629).
Rik <rik@octave.org>
parents:
26376
diff
changeset
|
64 @code{inverse} is an alias and may be used identically in place of @code{inv}. |
24197
63fc7a75a3d7
doc: Update docstring for pinv and inv.
Rik <rik@octave.org>
parents:
23219
diff
changeset
|
65 @seealso{ldivide, rdivide, pinv} |
21966
112b20240c87
move docstrings in C++ files out of C strings and into comments
John W. Eaton <jwe@octave.org>
parents:
21724
diff
changeset
|
66 @end deftypefn */) |
2928 | 67 { |
20819
f428cbe7576f
eliminate unnecessary uses of nargin
John W. Eaton <jwe@octave.org>
parents:
20802
diff
changeset
|
68 if (args.length () != 1) |
20802
8bb38ba1bad6
eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents:
20678
diff
changeset
|
69 print_usage (); |
2928 | 70 |
71 octave_value arg = args(0); | |
72 | |
23577
80c42f4cca13
maint: Deprecate is_empty and replace with isempty.
Rik <rik@octave.org>
parents:
23453
diff
changeset
|
73 if (arg.isempty ()) |
21127
df7891224709
maint: Use "return ovl (...)" in DEFUN macros.
Rik <rik@octave.org>
parents:
21112
diff
changeset
|
74 return ovl (Matrix ()); |
2928 | 75 |
22372
0c0de2205d38
utils.h: deprecated out of date arg_is_empty function.
Carnë Draug <carandraug@octave.org>
parents:
22327
diff
changeset
|
76 if (arg.rows () != arg.columns ()) |
21110
3d0d84305600
Use err_square_matrix_required more widely.
Rik <rik@octave.org>
parents:
21100
diff
changeset
|
77 err_square_matrix_required ("inverse", "A"); |
2928 | 78 |
7515
f3c00dc0912b
Eliminate the rest of the dispatched sparse functions
David Bateman <dbateman@free.fr>
parents:
7017
diff
changeset
|
79 octave_value result; |
f3c00dc0912b
Eliminate the rest of the dispatched sparse functions
David Bateman <dbateman@free.fr>
parents:
7017
diff
changeset
|
80 octave_idx_type info; |
f3c00dc0912b
Eliminate the rest of the dispatched sparse functions
David Bateman <dbateman@free.fr>
parents:
7017
diff
changeset
|
81 double rcond = 0.0; |
7789
82be108cc558
First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
7650
diff
changeset
|
82 float frcond = 0.0; |
82be108cc558
First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
7650
diff
changeset
|
83 bool isfloat = arg.is_single_type (); |
82be108cc558
First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
7650
diff
changeset
|
84 |
8366
8b1a2555c4e2
implement diagonal matrix objects
Jaroslav Hajek <highegg@gmail.com>
parents:
7911
diff
changeset
|
85 if (arg.is_diag_matrix ()) |
8b1a2555c4e2
implement diagonal matrix objects
Jaroslav Hajek <highegg@gmail.com>
parents:
7911
diff
changeset
|
86 { |
8b1a2555c4e2
implement diagonal matrix objects
Jaroslav Hajek <highegg@gmail.com>
parents:
7911
diff
changeset
|
87 rcond = 1.0; |
8b1a2555c4e2
implement diagonal matrix objects
Jaroslav Hajek <highegg@gmail.com>
parents:
7911
diff
changeset
|
88 frcond = 1.0f; |
23581
c3075ae020e1
maint: Deprecate is_complex_type and replace with iscomplex.
Rik <rik@octave.org>
parents:
23577
diff
changeset
|
89 if (arg.iscomplex ()) |
8366
8b1a2555c4e2
implement diagonal matrix objects
Jaroslav Hajek <highegg@gmail.com>
parents:
7911
diff
changeset
|
90 { |
8b1a2555c4e2
implement diagonal matrix objects
Jaroslav Hajek <highegg@gmail.com>
parents:
7911
diff
changeset
|
91 if (isfloat) |
8b1a2555c4e2
implement diagonal matrix objects
Jaroslav Hajek <highegg@gmail.com>
parents:
7911
diff
changeset
|
92 { |
8916
a2878ba31a9e
add diag & perm matrix query methods to octave_value
Jaroslav Hajek <highegg@gmail.com>
parents:
8371
diff
changeset
|
93 result = arg.float_complex_diag_matrix_value ().inverse (info); |
27093
6e18f0ce268c
Inverse of a sparse/diagonal singular matrix should be a sparse/diagonal matrix of Infs.
marco.caliari@univr.it
parents:
26376
diff
changeset
|
94 if (info == -1) |
6e18f0ce268c
Inverse of a sparse/diagonal singular matrix should be a sparse/diagonal matrix of Infs.
marco.caliari@univr.it
parents:
26376
diff
changeset
|
95 frcond = 0.0f; |
6e18f0ce268c
Inverse of a sparse/diagonal singular matrix should be a sparse/diagonal matrix of Infs.
marco.caliari@univr.it
parents:
26376
diff
changeset
|
96 else if (nargout > 1) |
8916
a2878ba31a9e
add diag & perm matrix query methods to octave_value
Jaroslav Hajek <highegg@gmail.com>
parents:
8371
diff
changeset
|
97 frcond = arg.float_complex_diag_matrix_value ().rcond (); |
8366
8b1a2555c4e2
implement diagonal matrix objects
Jaroslav Hajek <highegg@gmail.com>
parents:
7911
diff
changeset
|
98 } |
8b1a2555c4e2
implement diagonal matrix objects
Jaroslav Hajek <highegg@gmail.com>
parents:
7911
diff
changeset
|
99 else |
8b1a2555c4e2
implement diagonal matrix objects
Jaroslav Hajek <highegg@gmail.com>
parents:
7911
diff
changeset
|
100 { |
8916
a2878ba31a9e
add diag & perm matrix query methods to octave_value
Jaroslav Hajek <highegg@gmail.com>
parents:
8371
diff
changeset
|
101 result = arg.complex_diag_matrix_value ().inverse (info); |
27093
6e18f0ce268c
Inverse of a sparse/diagonal singular matrix should be a sparse/diagonal matrix of Infs.
marco.caliari@univr.it
parents:
26376
diff
changeset
|
102 if (info == -1) |
6e18f0ce268c
Inverse of a sparse/diagonal singular matrix should be a sparse/diagonal matrix of Infs.
marco.caliari@univr.it
parents:
26376
diff
changeset
|
103 rcond = 0.0; |
6e18f0ce268c
Inverse of a sparse/diagonal singular matrix should be a sparse/diagonal matrix of Infs.
marco.caliari@univr.it
parents:
26376
diff
changeset
|
104 else if (nargout > 1) |
8916
a2878ba31a9e
add diag & perm matrix query methods to octave_value
Jaroslav Hajek <highegg@gmail.com>
parents:
8371
diff
changeset
|
105 rcond = arg.complex_diag_matrix_value ().rcond (); |
8366
8b1a2555c4e2
implement diagonal matrix objects
Jaroslav Hajek <highegg@gmail.com>
parents:
7911
diff
changeset
|
106 } |
8b1a2555c4e2
implement diagonal matrix objects
Jaroslav Hajek <highegg@gmail.com>
parents:
7911
diff
changeset
|
107 } |
8b1a2555c4e2
implement diagonal matrix objects
Jaroslav Hajek <highegg@gmail.com>
parents:
7911
diff
changeset
|
108 else |
8b1a2555c4e2
implement diagonal matrix objects
Jaroslav Hajek <highegg@gmail.com>
parents:
7911
diff
changeset
|
109 { |
8b1a2555c4e2
implement diagonal matrix objects
Jaroslav Hajek <highegg@gmail.com>
parents:
7911
diff
changeset
|
110 if (isfloat) |
8b1a2555c4e2
implement diagonal matrix objects
Jaroslav Hajek <highegg@gmail.com>
parents:
7911
diff
changeset
|
111 { |
8916
a2878ba31a9e
add diag & perm matrix query methods to octave_value
Jaroslav Hajek <highegg@gmail.com>
parents:
8371
diff
changeset
|
112 result = arg.float_diag_matrix_value ().inverse (info); |
27093
6e18f0ce268c
Inverse of a sparse/diagonal singular matrix should be a sparse/diagonal matrix of Infs.
marco.caliari@univr.it
parents:
26376
diff
changeset
|
113 if (info == -1) |
6e18f0ce268c
Inverse of a sparse/diagonal singular matrix should be a sparse/diagonal matrix of Infs.
marco.caliari@univr.it
parents:
26376
diff
changeset
|
114 frcond = 0.0f; |
6e18f0ce268c
Inverse of a sparse/diagonal singular matrix should be a sparse/diagonal matrix of Infs.
marco.caliari@univr.it
parents:
26376
diff
changeset
|
115 else if (nargout > 1) |
8916
a2878ba31a9e
add diag & perm matrix query methods to octave_value
Jaroslav Hajek <highegg@gmail.com>
parents:
8371
diff
changeset
|
116 frcond = arg.float_diag_matrix_value ().rcond (); |
8366
8b1a2555c4e2
implement diagonal matrix objects
Jaroslav Hajek <highegg@gmail.com>
parents:
7911
diff
changeset
|
117 } |
8b1a2555c4e2
implement diagonal matrix objects
Jaroslav Hajek <highegg@gmail.com>
parents:
7911
diff
changeset
|
118 else |
8b1a2555c4e2
implement diagonal matrix objects
Jaroslav Hajek <highegg@gmail.com>
parents:
7911
diff
changeset
|
119 { |
8916
a2878ba31a9e
add diag & perm matrix query methods to octave_value
Jaroslav Hajek <highegg@gmail.com>
parents:
8371
diff
changeset
|
120 result = arg.diag_matrix_value ().inverse (info); |
27093
6e18f0ce268c
Inverse of a sparse/diagonal singular matrix should be a sparse/diagonal matrix of Infs.
marco.caliari@univr.it
parents:
26376
diff
changeset
|
121 if (info == -1) |
6e18f0ce268c
Inverse of a sparse/diagonal singular matrix should be a sparse/diagonal matrix of Infs.
marco.caliari@univr.it
parents:
26376
diff
changeset
|
122 rcond = 0.0; |
6e18f0ce268c
Inverse of a sparse/diagonal singular matrix should be a sparse/diagonal matrix of Infs.
marco.caliari@univr.it
parents:
26376
diff
changeset
|
123 else if (nargout > 1) |
8916
a2878ba31a9e
add diag & perm matrix query methods to octave_value
Jaroslav Hajek <highegg@gmail.com>
parents:
8371
diff
changeset
|
124 rcond = arg.diag_matrix_value ().rcond (); |
8366
8b1a2555c4e2
implement diagonal matrix objects
Jaroslav Hajek <highegg@gmail.com>
parents:
7911
diff
changeset
|
125 } |
8b1a2555c4e2
implement diagonal matrix objects
Jaroslav Hajek <highegg@gmail.com>
parents:
7911
diff
changeset
|
126 } |
8b1a2555c4e2
implement diagonal matrix objects
Jaroslav Hajek <highegg@gmail.com>
parents:
7911
diff
changeset
|
127 } |
8371
c3f7e2549abb
make det & inv aware of diagonal & permutation matrices
Jaroslav Hajek <highegg@gmail.com>
parents:
8366
diff
changeset
|
128 else if (arg.is_perm_matrix ()) |
c3f7e2549abb
make det & inv aware of diagonal & permutation matrices
Jaroslav Hajek <highegg@gmail.com>
parents:
8366
diff
changeset
|
129 { |
c3f7e2549abb
make det & inv aware of diagonal & permutation matrices
Jaroslav Hajek <highegg@gmail.com>
parents:
8366
diff
changeset
|
130 rcond = 1.0; |
c3f7e2549abb
make det & inv aware of diagonal & permutation matrices
Jaroslav Hajek <highegg@gmail.com>
parents:
8366
diff
changeset
|
131 info = 0; |
8960
93f18f166aba
remove float perm matrices
Jaroslav Hajek <highegg@gmail.com>
parents:
8920
diff
changeset
|
132 result = arg.perm_matrix_value ().inverse (); |
8371
c3f7e2549abb
make det & inv aware of diagonal & permutation matrices
Jaroslav Hajek <highegg@gmail.com>
parents:
8366
diff
changeset
|
133 } |
8366
8b1a2555c4e2
implement diagonal matrix objects
Jaroslav Hajek <highegg@gmail.com>
parents:
7911
diff
changeset
|
134 else if (isfloat) |
2928 | 135 { |
23582
0cc2011d800e
maint: Deprecate is_real_type and replace with isreal.
Rik <rik@octave.org>
parents:
23581
diff
changeset
|
136 if (arg.isreal ()) |
10154
40dfc0c99116
DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents:
9064
diff
changeset
|
137 { |
40dfc0c99116
DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents:
9064
diff
changeset
|
138 FloatMatrix m = arg.float_matrix_value (); |
20678
4b00afb5e9c3
eliminate more uses of error_state
John W. Eaton <jwe@octave.org>
parents:
20172
diff
changeset
|
139 |
4b00afb5e9c3
eliminate more uses of error_state
John W. Eaton <jwe@octave.org>
parents:
20172
diff
changeset
|
140 MatrixType mattyp = args(0).matrix_type (); |
4b00afb5e9c3
eliminate more uses of error_state
John W. Eaton <jwe@octave.org>
parents:
20172
diff
changeset
|
141 result = m.inverse (mattyp, info, frcond, 1); |
4b00afb5e9c3
eliminate more uses of error_state
John W. Eaton <jwe@octave.org>
parents:
20172
diff
changeset
|
142 args(0).matrix_type (mattyp); |
10154
40dfc0c99116
DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents:
9064
diff
changeset
|
143 } |
23581
c3075ae020e1
maint: Deprecate is_complex_type and replace with iscomplex.
Rik <rik@octave.org>
parents:
23577
diff
changeset
|
144 else if (arg.iscomplex ()) |
10154
40dfc0c99116
DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents:
9064
diff
changeset
|
145 { |
40dfc0c99116
DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents:
9064
diff
changeset
|
146 FloatComplexMatrix m = arg.float_complex_matrix_value (); |
20678
4b00afb5e9c3
eliminate more uses of error_state
John W. Eaton <jwe@octave.org>
parents:
20172
diff
changeset
|
147 |
4b00afb5e9c3
eliminate more uses of error_state
John W. Eaton <jwe@octave.org>
parents:
20172
diff
changeset
|
148 MatrixType mattyp = args(0).matrix_type (); |
4b00afb5e9c3
eliminate more uses of error_state
John W. Eaton <jwe@octave.org>
parents:
20172
diff
changeset
|
149 result = m.inverse (mattyp, info, frcond, 1); |
4b00afb5e9c3
eliminate more uses of error_state
John W. Eaton <jwe@octave.org>
parents:
20172
diff
changeset
|
150 args(0).matrix_type (mattyp); |
10154
40dfc0c99116
DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents:
9064
diff
changeset
|
151 } |
2928 | 152 } |
7789
82be108cc558
First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents:
7650
diff
changeset
|
153 else |
2928 | 154 { |
23582
0cc2011d800e
maint: Deprecate is_real_type and replace with isreal.
Rik <rik@octave.org>
parents:
23581
diff
changeset
|
155 if (arg.isreal ()) |
10154
40dfc0c99116
DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents:
9064
diff
changeset
|
156 { |
23583
b7747a2c88b2
maint: Deprecate is_sparse_type and replace with issparse.
Rik <rik@octave.org>
parents:
23582
diff
changeset
|
157 if (arg.issparse ()) |
10154
40dfc0c99116
DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents:
9064
diff
changeset
|
158 { |
40dfc0c99116
DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents:
9064
diff
changeset
|
159 SparseMatrix m = arg.sparse_matrix_value (); |
20678
4b00afb5e9c3
eliminate more uses of error_state
John W. Eaton <jwe@octave.org>
parents:
20172
diff
changeset
|
160 |
4b00afb5e9c3
eliminate more uses of error_state
John W. Eaton <jwe@octave.org>
parents:
20172
diff
changeset
|
161 MatrixType mattyp = args(0).matrix_type (); |
4b00afb5e9c3
eliminate more uses of error_state
John W. Eaton <jwe@octave.org>
parents:
20172
diff
changeset
|
162 result = m.inverse (mattyp, info, rcond, 1); |
4b00afb5e9c3
eliminate more uses of error_state
John W. Eaton <jwe@octave.org>
parents:
20172
diff
changeset
|
163 args(0).matrix_type (mattyp); |
10154
40dfc0c99116
DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents:
9064
diff
changeset
|
164 } |
40dfc0c99116
DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents:
9064
diff
changeset
|
165 else |
40dfc0c99116
DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents:
9064
diff
changeset
|
166 { |
40dfc0c99116
DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents:
9064
diff
changeset
|
167 Matrix m = arg.matrix_value (); |
20678
4b00afb5e9c3
eliminate more uses of error_state
John W. Eaton <jwe@octave.org>
parents:
20172
diff
changeset
|
168 |
4b00afb5e9c3
eliminate more uses of error_state
John W. Eaton <jwe@octave.org>
parents:
20172
diff
changeset
|
169 MatrixType mattyp = args(0).matrix_type (); |
4b00afb5e9c3
eliminate more uses of error_state
John W. Eaton <jwe@octave.org>
parents:
20172
diff
changeset
|
170 result = m.inverse (mattyp, info, rcond, 1); |
4b00afb5e9c3
eliminate more uses of error_state
John W. Eaton <jwe@octave.org>
parents:
20172
diff
changeset
|
171 args(0).matrix_type (mattyp); |
10154
40dfc0c99116
DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents:
9064
diff
changeset
|
172 } |
40dfc0c99116
DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents:
9064
diff
changeset
|
173 } |
23581
c3075ae020e1
maint: Deprecate is_complex_type and replace with iscomplex.
Rik <rik@octave.org>
parents:
23577
diff
changeset
|
174 else if (arg.iscomplex ()) |
10154
40dfc0c99116
DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents:
9064
diff
changeset
|
175 { |
23583
b7747a2c88b2
maint: Deprecate is_sparse_type and replace with issparse.
Rik <rik@octave.org>
parents:
23582
diff
changeset
|
176 if (arg.issparse ()) |
10154
40dfc0c99116
DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents:
9064
diff
changeset
|
177 { |
40dfc0c99116
DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents:
9064
diff
changeset
|
178 SparseComplexMatrix m = arg.sparse_complex_matrix_value (); |
20678
4b00afb5e9c3
eliminate more uses of error_state
John W. Eaton <jwe@octave.org>
parents:
20172
diff
changeset
|
179 |
4b00afb5e9c3
eliminate more uses of error_state
John W. Eaton <jwe@octave.org>
parents:
20172
diff
changeset
|
180 MatrixType mattyp = args(0).matrix_type (); |
4b00afb5e9c3
eliminate more uses of error_state
John W. Eaton <jwe@octave.org>
parents:
20172
diff
changeset
|
181 result = m.inverse (mattyp, info, rcond, 1); |
4b00afb5e9c3
eliminate more uses of error_state
John W. Eaton <jwe@octave.org>
parents:
20172
diff
changeset
|
182 args(0).matrix_type (mattyp); |
10154
40dfc0c99116
DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents:
9064
diff
changeset
|
183 } |
40dfc0c99116
DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents:
9064
diff
changeset
|
184 else |
40dfc0c99116
DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents:
9064
diff
changeset
|
185 { |
40dfc0c99116
DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents:
9064
diff
changeset
|
186 ComplexMatrix m = arg.complex_matrix_value (); |
20678
4b00afb5e9c3
eliminate more uses of error_state
John W. Eaton <jwe@octave.org>
parents:
20172
diff
changeset
|
187 |
4b00afb5e9c3
eliminate more uses of error_state
John W. Eaton <jwe@octave.org>
parents:
20172
diff
changeset
|
188 MatrixType mattyp = args(0).matrix_type (); |
4b00afb5e9c3
eliminate more uses of error_state
John W. Eaton <jwe@octave.org>
parents:
20172
diff
changeset
|
189 result = m.inverse (mattyp, info, rcond, 1); |
4b00afb5e9c3
eliminate more uses of error_state
John W. Eaton <jwe@octave.org>
parents:
20172
diff
changeset
|
190 args(0).matrix_type (mattyp); |
10154
40dfc0c99116
DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents:
9064
diff
changeset
|
191 } |
40dfc0c99116
DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents:
9064
diff
changeset
|
192 } |
7515
f3c00dc0912b
Eliminate the rest of the dispatched sparse functions
David Bateman <dbateman@free.fr>
parents:
7017
diff
changeset
|
193 else |
21100
e39e05d90788
Switch gripe_XXX to either err_XXX or warn_XXX naming scheme.
Rik <rik@octave.org>
parents:
21024
diff
changeset
|
194 err_wrong_type_arg ("inv", arg); |
2928 | 195 } |
7515
f3c00dc0912b
Eliminate the rest of the dispatched sparse functions
David Bateman <dbateman@free.fr>
parents:
7017
diff
changeset
|
196 |
20898
8da80da1ac37
maint: Use ovl() more places in the code.
Rik <rik@octave.org>
parents:
20892
diff
changeset
|
197 octave_value_list retval (nargout > 1 ? 2 : 1); |
8da80da1ac37
maint: Use ovl() more places in the code.
Rik <rik@octave.org>
parents:
20892
diff
changeset
|
198 |
8da80da1ac37
maint: Use ovl() more places in the code.
Rik <rik@octave.org>
parents:
20892
diff
changeset
|
199 retval(0) = result; |
20678
4b00afb5e9c3
eliminate more uses of error_state
John W. Eaton <jwe@octave.org>
parents:
20172
diff
changeset
|
200 if (nargout > 1) |
23450
855122b993da
maint: Wrap tertiary operator in parentheses "(COND ? x : y)".
Rik <rik@octave.org>
parents:
23220
diff
changeset
|
201 retval(1) = (isfloat ? octave_value (frcond) : octave_value (rcond)); |
7515
f3c00dc0912b
Eliminate the rest of the dispatched sparse functions
David Bateman <dbateman@free.fr>
parents:
7017
diff
changeset
|
202 |
20678
4b00afb5e9c3
eliminate more uses of error_state
John W. Eaton <jwe@octave.org>
parents:
20172
diff
changeset
|
203 bool rcond_plus_one_eq_one = false; |
18243
36057e2411f8
test float rcond using float arithmetic in inv function (bug #41065)
John W. Eaton <jwe@octave.org>
parents:
17787
diff
changeset
|
204 |
20678
4b00afb5e9c3
eliminate more uses of error_state
John W. Eaton <jwe@octave.org>
parents:
20172
diff
changeset
|
205 if (isfloat) |
4b00afb5e9c3
eliminate more uses of error_state
John W. Eaton <jwe@octave.org>
parents:
20172
diff
changeset
|
206 { |
4b00afb5e9c3
eliminate more uses of error_state
John W. Eaton <jwe@octave.org>
parents:
20172
diff
changeset
|
207 volatile float xrcond = frcond; |
27093
6e18f0ce268c
Inverse of a sparse/diagonal singular matrix should be a sparse/diagonal matrix of Infs.
marco.caliari@univr.it
parents:
26376
diff
changeset
|
208 rcond_plus_one_eq_one = xrcond + 1.0f == 1.0f; |
20678
4b00afb5e9c3
eliminate more uses of error_state
John W. Eaton <jwe@octave.org>
parents:
20172
diff
changeset
|
209 } |
4b00afb5e9c3
eliminate more uses of error_state
John W. Eaton <jwe@octave.org>
parents:
20172
diff
changeset
|
210 else |
4b00afb5e9c3
eliminate more uses of error_state
John W. Eaton <jwe@octave.org>
parents:
20172
diff
changeset
|
211 { |
4b00afb5e9c3
eliminate more uses of error_state
John W. Eaton <jwe@octave.org>
parents:
20172
diff
changeset
|
212 volatile double xrcond = rcond; |
4b00afb5e9c3
eliminate more uses of error_state
John W. Eaton <jwe@octave.org>
parents:
20172
diff
changeset
|
213 rcond_plus_one_eq_one = xrcond + 1.0 == 1.0; |
4b00afb5e9c3
eliminate more uses of error_state
John W. Eaton <jwe@octave.org>
parents:
20172
diff
changeset
|
214 } |
18243
36057e2411f8
test float rcond using float arithmetic in inv function (bug #41065)
John W. Eaton <jwe@octave.org>
parents:
17787
diff
changeset
|
215 |
20678
4b00afb5e9c3
eliminate more uses of error_state
John W. Eaton <jwe@octave.org>
parents:
20172
diff
changeset
|
216 if (nargout < 2 && (info == -1 || rcond_plus_one_eq_one)) |
29961
7d6709900da7
eliminate octave:: namespace tags in DEFUN and DEFMETHOD and more
John W. Eaton <jwe@octave.org>
parents:
29958
diff
changeset
|
217 warn_singular_matrix (isfloat ? frcond : rcond); |
2928 | 218 |
219 return retval; | |
220 } | |
221 | |
7814
87865ed7405f
Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents:
7789
diff
changeset
|
222 /* |
14501
60e5cf354d80
Update %!tests in DLD-FUNCTIONS/ directory with Octave coding conventions.
Rik <octave@nomad.inbox5.com>
parents:
14138
diff
changeset
|
223 %!assert (inv ([1, 2; 3, 4]), [-2, 1; 1.5, -0.5], sqrt (eps)) |
30313
98400baa509f
Return Inf for inv(0) for compatibility with division operator and Matlab (bug #52285).
Rik <rik@octave.org>
parents:
29961
diff
changeset
|
224 %!assert (inv (single ([1, 2; 3, 4])), single ([-2, 1; 1.5, -0.5]), |
98400baa509f
Return Inf for inv(0) for compatibility with division operator and Matlab (bug #52285).
Rik <rik@octave.org>
parents:
29961
diff
changeset
|
225 %! sqrt (eps ("single"))) |
7814
87865ed7405f
Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents:
7789
diff
changeset
|
226 |
22849
1d242ae72240
Return 0 for special case of scalar Inf input to inverse (bug #49690).
Rik <rik@octave.org>
parents:
22755
diff
changeset
|
227 ## Test special inputs |
1d242ae72240
Return 0 for special case of scalar Inf input to inverse (bug #49690).
Rik <rik@octave.org>
parents:
22755
diff
changeset
|
228 %!assert (inv (zeros (2,0)), []) |
30313
98400baa509f
Return Inf for inv(0) for compatibility with division operator and Matlab (bug #52285).
Rik <rik@octave.org>
parents:
29961
diff
changeset
|
229 %!warning <matrix singular> assert (inv (0), Inf) |
98400baa509f
Return Inf for inv(0) for compatibility with division operator and Matlab (bug #52285).
Rik <rik@octave.org>
parents:
29961
diff
changeset
|
230 ## NOTE: Matlab returns +Inf for -0 input, but it returns -Inf for 1/-0. |
98400baa509f
Return Inf for inv(0) for compatibility with division operator and Matlab (bug #52285).
Rik <rik@octave.org>
parents:
29961
diff
changeset
|
231 ## These should be the same and in Octave they are. |
98400baa509f
Return Inf for inv(0) for compatibility with division operator and Matlab (bug #52285).
Rik <rik@octave.org>
parents:
29961
diff
changeset
|
232 %!warning <matrix singular> assert (inv (-0), -Inf) |
98400baa509f
Return Inf for inv(0) for compatibility with division operator and Matlab (bug #52285).
Rik <rik@octave.org>
parents:
29961
diff
changeset
|
233 %!warning <matrix singular> assert (inv (single (0)), single (Inf)) |
98400baa509f
Return Inf for inv(0) for compatibility with division operator and Matlab (bug #52285).
Rik <rik@octave.org>
parents:
29961
diff
changeset
|
234 %!warning <matrix singular> assert (inv (complex (0, 0)), Inf) |
98400baa509f
Return Inf for inv(0) for compatibility with division operator and Matlab (bug #52285).
Rik <rik@octave.org>
parents:
29961
diff
changeset
|
235 %!warning <matrix singular> assert (inv (single (complex (0,1)) - i), |
98400baa509f
Return Inf for inv(0) for compatibility with division operator and Matlab (bug #52285).
Rik <rik@octave.org>
parents:
29961
diff
changeset
|
236 %! single (Inf)) |
98400baa509f
Return Inf for inv(0) for compatibility with division operator and Matlab (bug #52285).
Rik <rik@octave.org>
parents:
29961
diff
changeset
|
237 %!warning <matrix singular> assert (inv (zeros (2,2)), Inf (2,2)) |
22849
1d242ae72240
Return 0 for special case of scalar Inf input to inverse (bug #49690).
Rik <rik@octave.org>
parents:
22755
diff
changeset
|
238 %!warning <matrix singular> assert (inv (Inf), 0) |
1d242ae72240
Return 0 for special case of scalar Inf input to inverse (bug #49690).
Rik <rik@octave.org>
parents:
22755
diff
changeset
|
239 %!warning <matrix singular> assert (inv (-Inf), -0) |
1d242ae72240
Return 0 for special case of scalar Inf input to inverse (bug #49690).
Rik <rik@octave.org>
parents:
22755
diff
changeset
|
240 %!warning <matrix singular> assert (inv (single (Inf)), single (0)) |
1d242ae72240
Return 0 for special case of scalar Inf input to inverse (bug #49690).
Rik <rik@octave.org>
parents:
22755
diff
changeset
|
241 %!warning <matrix singular> assert (inv (complex (1, Inf)), 0) |
1d242ae72240
Return 0 for special case of scalar Inf input to inverse (bug #49690).
Rik <rik@octave.org>
parents:
22755
diff
changeset
|
242 %!warning <matrix singular> assert (inv (single (complex (1,Inf))), single (0)) |
30313
98400baa509f
Return Inf for inv(0) for compatibility with division operator and Matlab (bug #52285).
Rik <rik@octave.org>
parents:
29961
diff
changeset
|
243 %!assert (inv (Inf (2,2)), NaN (2,2)) |
22849
1d242ae72240
Return 0 for special case of scalar Inf input to inverse (bug #49690).
Rik <rik@octave.org>
parents:
22755
diff
changeset
|
244 |
1d242ae72240
Return 0 for special case of scalar Inf input to inverse (bug #49690).
Rik <rik@octave.org>
parents:
22755
diff
changeset
|
245 %!test |
1d242ae72240
Return 0 for special case of scalar Inf input to inverse (bug #49690).
Rik <rik@octave.org>
parents:
22755
diff
changeset
|
246 %! [xinv, rcond] = inv (single ([1,2;3,4])); |
1d242ae72240
Return 0 for special case of scalar Inf input to inverse (bug #49690).
Rik <rik@octave.org>
parents:
22755
diff
changeset
|
247 %! assert (isa (xinv, "single")); |
1d242ae72240
Return 0 for special case of scalar Inf input to inverse (bug #49690).
Rik <rik@octave.org>
parents:
22755
diff
changeset
|
248 %! assert (isa (rcond, "single")); |
1d242ae72240
Return 0 for special case of scalar Inf input to inverse (bug #49690).
Rik <rik@octave.org>
parents:
22755
diff
changeset
|
249 |
1d242ae72240
Return 0 for special case of scalar Inf input to inverse (bug #49690).
Rik <rik@octave.org>
parents:
22755
diff
changeset
|
250 %!test |
1d242ae72240
Return 0 for special case of scalar Inf input to inverse (bug #49690).
Rik <rik@octave.org>
parents:
22755
diff
changeset
|
251 %! [xinv, rcond] = inv ([1,2;3,4]); |
1d242ae72240
Return 0 for special case of scalar Inf input to inverse (bug #49690).
Rik <rik@octave.org>
parents:
22755
diff
changeset
|
252 %! assert (isa (xinv, "double")); |
1d242ae72240
Return 0 for special case of scalar Inf input to inverse (bug #49690).
Rik <rik@octave.org>
parents:
22755
diff
changeset
|
253 %! assert (isa (rcond, "double")); |
1d242ae72240
Return 0 for special case of scalar Inf input to inverse (bug #49690).
Rik <rik@octave.org>
parents:
22755
diff
changeset
|
254 |
27122
d0d176ac575d
make new tests for inv of singular sparse matrices conditional on HAVE_UMFPACK
John W. Eaton <jwe@octave.org>
parents:
27093
diff
changeset
|
255 %!testif HAVE_UMFPACK <*56232> |
27093
6e18f0ce268c
Inverse of a sparse/diagonal singular matrix should be a sparse/diagonal matrix of Infs.
marco.caliari@univr.it
parents:
26376
diff
changeset
|
256 %! fail ("A = inv (sparse ([1, 2;0 ,0]))", "warning", "matrix singular"); |
6e18f0ce268c
Inverse of a sparse/diagonal singular matrix should be a sparse/diagonal matrix of Infs.
marco.caliari@univr.it
parents:
26376
diff
changeset
|
257 %! assert (A, sparse ([Inf, Inf; 0, 0])); |
6e18f0ce268c
Inverse of a sparse/diagonal singular matrix should be a sparse/diagonal matrix of Infs.
marco.caliari@univr.it
parents:
26376
diff
changeset
|
258 |
27122
d0d176ac575d
make new tests for inv of singular sparse matrices conditional on HAVE_UMFPACK
John W. Eaton <jwe@octave.org>
parents:
27093
diff
changeset
|
259 %!testif HAVE_UMFPACK <*56232> |
27093
6e18f0ce268c
Inverse of a sparse/diagonal singular matrix should be a sparse/diagonal matrix of Infs.
marco.caliari@univr.it
parents:
26376
diff
changeset
|
260 %! fail ("A = inv (sparse ([1i, 2;0 ,0]))", "warning", "matrix singular"); |
6e18f0ce268c
Inverse of a sparse/diagonal singular matrix should be a sparse/diagonal matrix of Infs.
marco.caliari@univr.it
parents:
26376
diff
changeset
|
261 %! assert (A, sparse ([Inf, Inf; 0, 0])); |
6e18f0ce268c
Inverse of a sparse/diagonal singular matrix should be a sparse/diagonal matrix of Infs.
marco.caliari@univr.it
parents:
26376
diff
changeset
|
262 |
6e18f0ce268c
Inverse of a sparse/diagonal singular matrix should be a sparse/diagonal matrix of Infs.
marco.caliari@univr.it
parents:
26376
diff
changeset
|
263 %!test |
6e18f0ce268c
Inverse of a sparse/diagonal singular matrix should be a sparse/diagonal matrix of Infs.
marco.caliari@univr.it
parents:
26376
diff
changeset
|
264 %! fail ("A = inv (diag ([1, 0, 1]))", "warning", "matrix singular"); |
6e18f0ce268c
Inverse of a sparse/diagonal singular matrix should be a sparse/diagonal matrix of Infs.
marco.caliari@univr.it
parents:
26376
diff
changeset
|
265 %! assert (A, diag ([Inf, Inf, Inf])); |
6e18f0ce268c
Inverse of a sparse/diagonal singular matrix should be a sparse/diagonal matrix of Infs.
marco.caliari@univr.it
parents:
26376
diff
changeset
|
266 |
6e18f0ce268c
Inverse of a sparse/diagonal singular matrix should be a sparse/diagonal matrix of Infs.
marco.caliari@univr.it
parents:
26376
diff
changeset
|
267 %!error <inverse of the null matrix not defined> inv (diag ([0, 0])) |
6e18f0ce268c
Inverse of a sparse/diagonal singular matrix should be a sparse/diagonal matrix of Infs.
marco.caliari@univr.it
parents:
26376
diff
changeset
|
268 %!error <inverse of the null matrix not defined> inv (diag (complex ([0, 0]))) |
6e18f0ce268c
Inverse of a sparse/diagonal singular matrix should be a sparse/diagonal matrix of Infs.
marco.caliari@univr.it
parents:
26376
diff
changeset
|
269 |
27122
d0d176ac575d
make new tests for inv of singular sparse matrices conditional on HAVE_UMFPACK
John W. Eaton <jwe@octave.org>
parents:
27093
diff
changeset
|
270 %!testif HAVE_UMFPACK <*56232> |
27093
6e18f0ce268c
Inverse of a sparse/diagonal singular matrix should be a sparse/diagonal matrix of Infs.
marco.caliari@univr.it
parents:
26376
diff
changeset
|
271 %! fail ("A = inv (sparse ([1, 0, 0; 0, 0, 0; 0, 0, 1]))", "warning", "matrix singular"); |
6e18f0ce268c
Inverse of a sparse/diagonal singular matrix should be a sparse/diagonal matrix of Infs.
marco.caliari@univr.it
parents:
26376
diff
changeset
|
272 %! assert (A, sparse ([Inf, 0, 0; 0, 0, 0; 0, 0, Inf])); |
6e18f0ce268c
Inverse of a sparse/diagonal singular matrix should be a sparse/diagonal matrix of Infs.
marco.caliari@univr.it
parents:
26376
diff
changeset
|
273 |
14501
60e5cf354d80
Update %!tests in DLD-FUNCTIONS/ directory with Octave coding conventions.
Rik <octave@nomad.inbox5.com>
parents:
14138
diff
changeset
|
274 %!error inv () |
60e5cf354d80
Update %!tests in DLD-FUNCTIONS/ directory with Octave coding conventions.
Rik <octave@nomad.inbox5.com>
parents:
14138
diff
changeset
|
275 %!error inv ([1, 2; 3, 4], 2) |
21110
3d0d84305600
Use err_square_matrix_required more widely.
Rik <rik@octave.org>
parents:
21100
diff
changeset
|
276 %!error <must be a square matrix> inv ([1, 2; 3, 4; 5, 6]) |
27093
6e18f0ce268c
Inverse of a sparse/diagonal singular matrix should be a sparse/diagonal matrix of Infs.
marco.caliari@univr.it
parents:
26376
diff
changeset
|
277 %!error <inverse of the null matrix not defined> inv (sparse (2, 2, 0)) |
14501
60e5cf354d80
Update %!tests in DLD-FUNCTIONS/ directory with Octave coding conventions.
Rik <octave@nomad.inbox5.com>
parents:
14138
diff
changeset
|
278 */ |
7814
87865ed7405f
Second set of single precision test code and fix of resulting bugs
David Bateman <dbateman@free.fr>
parents:
7789
diff
changeset
|
279 |
23453
2eb7dc15f9fa
use DEFALIAS to define inverse
John W. Eaton <jwe@octave.org>
parents:
23450
diff
changeset
|
280 DEFALIAS (inverse, inv); |
29958
32c3a5805893
move DEFUN and DEFMETHOD functions inside octave namespace
John W. Eaton <jwe@octave.org>
parents:
29359
diff
changeset
|
281 |
32c3a5805893
move DEFUN and DEFMETHOD functions inside octave namespace
John W. Eaton <jwe@octave.org>
parents:
29359
diff
changeset
|
282 OCTAVE_NAMESPACE_END |