octave: scripts/linear-algebra/issymmetric.m annotate

annotate scripts/linear-algebra/issymmetric.m @ 33632:fed0dc6fd44c default tip @

remove unused variable from libgui/module.mk * libgui/module.mk: remove empty variable OCTAVE_GUI_EDITOR_MOC

author	Torsten Lilge <ttl-octave@mailbox.org>
date	Mon, 27 May 2024 19:42:05 +0200
parents	0b8f3470d1fb
children

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 ##
32632 2e484f9f1f18 maint: update Octave Project Developers copyright for the new year John W. Eaton <jwe@octave.org> parents: 31706 diff changeset	3 ## Copyright (C) 1996-2024 The Octave Project Developers
27918 b442ec6dda5c use centralized file for copyright info for individual contributors John W. Eaton <jwe@octave.org> parents: 26592 diff changeset	4 ##
27923 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/>.
4026 8cb8eff3f44c [project @ 2002-08-09 06:54:46 by jwe] jwe parents: diff changeset	7 ##
8cb8eff3f44c [project @ 2002-08-09 06:54:46 by jwe] jwe parents: diff changeset	8 ## This file is part of Octave.
8cb8eff3f44c [project @ 2002-08-09 06:54:46 by jwe] jwe parents: diff changeset	9 ##
24534 194eb4bd202b maint: Update punctuation for GPL v3 license text. Rik <rik@octave.org> parents: 23220 diff changeset	10 ## Octave is free software: you can redistribute it and/or modify it
4026 8cb8eff3f44c [project @ 2002-08-09 06:54:46 by jwe] jwe parents: diff changeset	11 ## under the terms of the GNU General Public License as published by
24534 194eb4bd202b maint: Update punctuation for GPL v3 license text. Rik <rik@octave.org> parents: 23220 diff changeset	12 ## the Free Software Foundation, either version 3 of the License, or
22755 3a2b891d0b33 maint: Standardize Copyright formatting. Rik <rik@octave.org> parents: 22323 diff changeset	13 ## (at your option) any later version.
4026 8cb8eff3f44c [project @ 2002-08-09 06:54:46 by jwe] jwe parents: diff changeset	14 ##
8cb8eff3f44c [project @ 2002-08-09 06:54:46 by jwe] jwe parents: diff changeset	15 ## Octave is distributed in the hope that it will be useful, but
8cb8eff3f44c [project @ 2002-08-09 06:54:46 by jwe] jwe parents: diff changeset	16 ## WITHOUT ANY WARRANTY; without even the implied warranty of
22755 3a2b891d0b33 maint: Standardize Copyright formatting. Rik <rik@octave.org> parents: 22323 diff changeset	17 ## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
3a2b891d0b33 maint: Standardize Copyright formatting. Rik <rik@octave.org> parents: 22323 diff changeset	18 ## GNU General Public License for more details.
4026 8cb8eff3f44c [project @ 2002-08-09 06:54:46 by jwe] jwe parents: diff changeset	19 ##
8cb8eff3f44c [project @ 2002-08-09 06:54:46 by jwe] jwe parents: diff changeset	20 ## 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: 6046 diff changeset	21 ## along with Octave; see the file COPYING. If not, see
24534 194eb4bd202b maint: Update punctuation for GPL v3 license text. Rik <rik@octave.org> parents: 23220 diff changeset	22 ## <https://www.gnu.org/licenses/>.
27923 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 ########################################################################
4026 8cb8eff3f44c [project @ 2002-08-09 06:54:46 by jwe] jwe parents: diff changeset	25
8cb8eff3f44c [project @ 2002-08-09 06:54:46 by jwe] jwe parents: diff changeset	26 ## -- texinfo --
30558 83aeaba707d8 doc: Use TF for output variable in documentation for isXXX functions in scripts/ directory. Rik <rik@octave.org> parents: 29359 diff changeset	27 ## @deftypefn {} {@var{tf} =} issymmetric (@var{A})
83aeaba707d8 doc: Use TF for output variable in documentation for isXXX functions in scripts/ directory. Rik <rik@octave.org> parents: 29359 diff changeset	28 ## @deftypefnx {} {@var{tf} =} issymmetric (@var{A}, @var{tol})
83aeaba707d8 doc: Use TF for output variable in documentation for isXXX functions in scripts/ directory. Rik <rik@octave.org> parents: 29359 diff changeset	29 ## @deftypefnx {} {@var{tf} =} issymmetric (@var{A}, @qcode{"skew"})
83aeaba707d8 doc: Use TF for output variable in documentation for isXXX functions in scripts/ directory. Rik <rik@octave.org> parents: 29359 diff changeset	30 ## @deftypefnx {} {@var{tf} =} issymmetric (@var{A}, @qcode{"skew"}, @var{tol})
33029 0b8f3470d1fb doc: Clarify object types for isX functions (bug #48088) Nicholas R. Jankowski <jankowski.nicholas@gmail.com> parents: 32632 diff changeset	31 ## Return true if @var{A} is a symmetric or skew-symmetric numeric matrix
0b8f3470d1fb doc: Clarify object types for isX functions (bug #48088) Nicholas R. Jankowski <jankowski.nicholas@gmail.com> parents: 32632 diff changeset	32 ## within the tolerance specified by @var{tol}.
18921 d0d0858cfab1 doc: Match docstring variable names to function variable names for linear-algebra m-files. Rik <rik@octave.org> parents: 18799 diff changeset	33 ##
d0d0858cfab1 doc: Match docstring variable names to function variable names for linear-algebra m-files. Rik <rik@octave.org> parents: 18799 diff changeset	34 ## The default tolerance is zero (uses faster code).
20160 03b9d17a2d95 doc: Update more docstrings to have one sentence summary as first line. Rik <rik@octave.org> parents: 19697 diff changeset	35 ##
25223 0f98040552de issymetric.m; Overhaul function and expand to check skew-symmetry (bug #53556). Rik <rik@octave.org> parents: 25054 diff changeset	36 ## The type of symmetry to check may be specified with the additional input
0f98040552de issymetric.m; Overhaul function and expand to check skew-symmetry (bug #53556). Rik <rik@octave.org> parents: 25054 diff changeset	37 ## @qcode{"nonskew"} (default) for regular symmetry or @qcode{"skew"} for
0f98040552de issymetric.m; Overhaul function and expand to check skew-symmetry (bug #53556). Rik <rik@octave.org> parents: 25054 diff changeset	38 ## skew-symmetry.
0f98040552de issymetric.m; Overhaul function and expand to check skew-symmetry (bug #53556). Rik <rik@octave.org> parents: 25054 diff changeset	39 ##
0f98040552de issymetric.m; Overhaul function and expand to check skew-symmetry (bug #53556). Rik <rik@octave.org> parents: 25054 diff changeset	40 ## Background: A matrix is symmetric if the transpose of the matrix is equal
25228 581d3a13d7e2 ishermitian.m, issymmetric.m: Use @tcode macro in docstring (bug #53556). Rik <rik@octave.org> parents: 25227 diff changeset	41 ## to the original matrix: @w{@tcode{@var{A} == @var{A}.'}}. If a tolerance
25223 0f98040552de issymetric.m; Overhaul function and expand to check skew-symmetry (bug #53556). Rik <rik@octave.org> parents: 25054 diff changeset	42 ## is given then symmetry is determined by
18921 d0d0858cfab1 doc: Match docstring variable names to function variable names for linear-algebra m-files. Rik <rik@octave.org> parents: 18799 diff changeset	43 ## @code{norm (@var{A} - @var{A}.', Inf) / norm (@var{A}, Inf) < @var{tol}}.
25223 0f98040552de issymetric.m; Overhaul function and expand to check skew-symmetry (bug #53556). Rik <rik@octave.org> parents: 25054 diff changeset	44 ##
0f98040552de issymetric.m; Overhaul function and expand to check skew-symmetry (bug #53556). Rik <rik@octave.org> parents: 25054 diff changeset	45 ## A matrix is skew-symmetric if the transpose of the matrix is equal to the
25228 581d3a13d7e2 ishermitian.m, issymmetric.m: Use @tcode macro in docstring (bug #53556). Rik <rik@octave.org> parents: 25227 diff changeset	46 ## negative of the original matrix: @w{@tcode{@var{A} == -@var{A}.'}}. If a
25223 0f98040552de issymetric.m; Overhaul function and expand to check skew-symmetry (bug #53556). Rik <rik@octave.org> parents: 25054 diff changeset	47 ## tolerance is given then skew-symmetry is determined by
0f98040552de issymetric.m; Overhaul function and expand to check skew-symmetry (bug #53556). Rik <rik@octave.org> parents: 25054 diff changeset	48 ## @code{norm (@var{A} + @var{A}.', Inf) / norm (@var{A}, Inf) < @var{tol}}.
11431 0d9640d755b1 Improve docstrings for all isXXX functions. Rik <octave@nomad.inbox5.com> parents: 10711 diff changeset	49 ## @seealso{ishermitian, isdefinite}
4026 8cb8eff3f44c [project @ 2002-08-09 06:54:46 by jwe] jwe parents: diff changeset	50 ## @end deftypefn
8cb8eff3f44c [project @ 2002-08-09 06:54:46 by jwe] jwe parents: diff changeset	51
30558 83aeaba707d8 doc: Use TF for output variable in documentation for isXXX functions in scripts/ directory. Rik <rik@octave.org> parents: 29359 diff changeset	52 function tf = issymmetric (A, skewopt = "nonskew", tol = 0)
9869 ecd750d1eabd move issymmetric & isdefinite to linear-algebra, create ishermitian Jaroslav Hajek <highegg@gmail.com> parents: 8920 diff changeset	53
28789 28de41192f3c Eliminate unneeded verification of nargin, nargout in m-files. Rik <rik@octave.org> parents: 27985 diff changeset	54 if (nargin < 1)
9869 ecd750d1eabd move issymmetric & isdefinite to linear-algebra, create ishermitian Jaroslav Hajek <highegg@gmail.com> parents: 8920 diff changeset	55 print_usage ();
ecd750d1eabd move issymmetric & isdefinite to linear-algebra, create ishermitian Jaroslav Hajek <highegg@gmail.com> parents: 8920 diff changeset	56 endif
4026 8cb8eff3f44c [project @ 2002-08-09 06:54:46 by jwe] jwe parents: diff changeset	57
25223 0f98040552de issymetric.m; Overhaul function and expand to check skew-symmetry (bug #53556). Rik <rik@octave.org> parents: 25054 diff changeset	58 if (nargin == 2)
0f98040552de issymetric.m; Overhaul function and expand to check skew-symmetry (bug #53556). Rik <rik@octave.org> parents: 25054 diff changeset	59 ## Decode whether second argument is skewopt or tol
0f98040552de issymetric.m; Overhaul function and expand to check skew-symmetry (bug #53556). Rik <rik@octave.org> parents: 25054 diff changeset	60 if (isnumeric (skewopt))
0f98040552de issymetric.m; Overhaul function and expand to check skew-symmetry (bug #53556). Rik <rik@octave.org> parents: 25054 diff changeset	61 tol = skewopt;
0f98040552de issymetric.m; Overhaul function and expand to check skew-symmetry (bug #53556). Rik <rik@octave.org> parents: 25054 diff changeset	62 skewopt = "nonskew";
0f98040552de issymetric.m; Overhaul function and expand to check skew-symmetry (bug #53556). Rik <rik@octave.org> parents: 25054 diff changeset	63 elseif (! ischar (skewopt))
0f98040552de issymetric.m; Overhaul function and expand to check skew-symmetry (bug #53556). Rik <rik@octave.org> parents: 25054 diff changeset	64 error ("issymmetric: second argument must be a non-negative scalar TOL, or one of the strings: 'skew' / 'nonskew'");
25227 a937ffe7dfd9 fix typo in previous change John W. Eaton <jwe@octave.org> parents: 25224 diff changeset	65 endif
25223 0f98040552de issymetric.m; Overhaul function and expand to check skew-symmetry (bug #53556). Rik <rik@octave.org> parents: 25054 diff changeset	66 endif
0f98040552de issymetric.m; Overhaul function and expand to check skew-symmetry (bug #53556). Rik <rik@octave.org> parents: 25054 diff changeset	67
0f98040552de issymetric.m; Overhaul function and expand to check skew-symmetry (bug #53556). Rik <rik@octave.org> parents: 25054 diff changeset	68 ## Validate inputs
28908 1572a4329015 issymmetric.m: Extend functionality to character matrices (bug #59264). Rik <rik@octave.org> parents: 28886 diff changeset	69 if (! (isnumeric (A) \|\| islogical (A) \|\| ischar (A)))
1572a4329015 issymmetric.m: Extend functionality to character matrices (bug #59264). Rik <rik@octave.org> parents: 28886 diff changeset	70 error ("issymmetric: A must be a numeric, logical, or character matrix");
25223 0f98040552de issymetric.m; Overhaul function and expand to check skew-symmetry (bug #53556). Rik <rik@octave.org> parents: 25054 diff changeset	71 endif
0f98040552de issymetric.m; Overhaul function and expand to check skew-symmetry (bug #53556). Rik <rik@octave.org> parents: 25054 diff changeset	72
0f98040552de issymetric.m; Overhaul function and expand to check skew-symmetry (bug #53556). Rik <rik@octave.org> parents: 25054 diff changeset	73 if (! (strcmp (skewopt, "skew") \|\| strcmp (skewopt, "nonskew")))
0f98040552de issymetric.m; Overhaul function and expand to check skew-symmetry (bug #53556). Rik <rik@octave.org> parents: 25054 diff changeset	74 error ("issymmetric: SKEWOPT must be 'skew' or 'nonskew'");
0f98040552de issymetric.m; Overhaul function and expand to check skew-symmetry (bug #53556). Rik <rik@octave.org> parents: 25054 diff changeset	75 endif
0f98040552de issymetric.m; Overhaul function and expand to check skew-symmetry (bug #53556). Rik <rik@octave.org> parents: 25054 diff changeset	76
0f98040552de issymetric.m; Overhaul function and expand to check skew-symmetry (bug #53556). Rik <rik@octave.org> parents: 25054 diff changeset	77 if (! (isnumeric (tol) && isscalar (tol) && tol >= 0))
0f98040552de issymetric.m; Overhaul function and expand to check skew-symmetry (bug #53556). Rik <rik@octave.org> parents: 25054 diff changeset	78 error ("issymmetric: TOL must be a scalar >= 0");
0f98040552de issymetric.m; Overhaul function and expand to check skew-symmetry (bug #53556). Rik <rik@octave.org> parents: 25054 diff changeset	79 endif
0f98040552de issymetric.m; Overhaul function and expand to check skew-symmetry (bug #53556). Rik <rik@octave.org> parents: 25054 diff changeset	80
28908 1572a4329015 issymmetric.m: Extend functionality to character matrices (bug #59264). Rik <rik@octave.org> parents: 28886 diff changeset	81 if (! issquare (A))
30558 83aeaba707d8 doc: Use TF for output variable in documentation for isXXX functions in scripts/ directory. Rik <rik@octave.org> parents: 29359 diff changeset	82 tf = false;
28908 1572a4329015 issymmetric.m: Extend functionality to character matrices (bug #59264). Rik <rik@octave.org> parents: 28886 diff changeset	83 return;
1572a4329015 issymmetric.m: Extend functionality to character matrices (bug #59264). Rik <rik@octave.org> parents: 28886 diff changeset	84 endif
1572a4329015 issymmetric.m: Extend functionality to character matrices (bug #59264). Rik <rik@octave.org> parents: 28886 diff changeset	85
25223 0f98040552de issymetric.m; Overhaul function and expand to check skew-symmetry (bug #53556). Rik <rik@octave.org> parents: 25054 diff changeset	86 ## Calculate symmetry
0f98040552de issymetric.m; Overhaul function and expand to check skew-symmetry (bug #53556). Rik <rik@octave.org> parents: 25054 diff changeset	87 if (strcmp (skewopt, "nonskew"))
9869 ecd750d1eabd move issymmetric & isdefinite to linear-algebra, create ishermitian Jaroslav Hajek <highegg@gmail.com> parents: 8920 diff changeset	88 if (tol == 0)
25223 0f98040552de issymetric.m; Overhaul function and expand to check skew-symmetry (bug #53556). Rik <rik@octave.org> parents: 25054 diff changeset	89 ## check for exact symmetry
30558 83aeaba707d8 doc: Use TF for output variable in documentation for isXXX functions in scripts/ directory. Rik <rik@octave.org> parents: 29359 diff changeset	90 tf = full (! any ((A != A.')(:)));
9869 ecd750d1eabd move issymmetric & isdefinite to linear-algebra, create ishermitian Jaroslav Hajek <highegg@gmail.com> parents: 8920 diff changeset	91 else
28908 1572a4329015 issymmetric.m: Extend functionality to character matrices (bug #59264). Rik <rik@octave.org> parents: 28886 diff changeset	92 if (! isnumeric (A))
26289 0d755097d73f issymetric.m, ishermitian.m: Don't error on logical matrices (bug #42487). Rik <rik@octave.org> parents: 25228 diff changeset	93 ## Hack to allow norm to work. Choose single to minimize memory.
0d755097d73f issymetric.m, ishermitian.m: Don't error on logical matrices (bug #42487). Rik <rik@octave.org> parents: 25228 diff changeset	94 A = single (A);
0d755097d73f issymetric.m, ishermitian.m: Don't error on logical matrices (bug #42487). Rik <rik@octave.org> parents: 25228 diff changeset	95 endif
25223 0f98040552de issymetric.m; Overhaul function and expand to check skew-symmetry (bug #53556). Rik <rik@octave.org> parents: 25054 diff changeset	96 norm_x = norm (A, Inf);
30558 83aeaba707d8 doc: Use TF for output variable in documentation for isXXX functions in scripts/ directory. Rik <rik@octave.org> parents: 29359 diff changeset	97 tf = norm_x == 0 \|\| norm (A - A.', Inf) / norm_x <= tol;
25223 0f98040552de issymetric.m; Overhaul function and expand to check skew-symmetry (bug #53556). Rik <rik@octave.org> parents: 25054 diff changeset	98 endif
0f98040552de issymetric.m; Overhaul function and expand to check skew-symmetry (bug #53556). Rik <rik@octave.org> parents: 25054 diff changeset	99 else
0f98040552de issymetric.m; Overhaul function and expand to check skew-symmetry (bug #53556). Rik <rik@octave.org> parents: 25054 diff changeset	100 ## skew symmetry
0f98040552de issymetric.m; Overhaul function and expand to check skew-symmetry (bug #53556). Rik <rik@octave.org> parents: 25054 diff changeset	101 if (tol == 0)
30558 83aeaba707d8 doc: Use TF for output variable in documentation for isXXX functions in scripts/ directory. Rik <rik@octave.org> parents: 29359 diff changeset	102 tf = full (! any ((A != -A.')(:)));
25223 0f98040552de issymetric.m; Overhaul function and expand to check skew-symmetry (bug #53556). Rik <rik@octave.org> parents: 25054 diff changeset	103 else
28908 1572a4329015 issymmetric.m: Extend functionality to character matrices (bug #59264). Rik <rik@octave.org> parents: 28886 diff changeset	104 if (! isnumeric (A))
26289 0d755097d73f issymetric.m, ishermitian.m: Don't error on logical matrices (bug #42487). Rik <rik@octave.org> parents: 25228 diff changeset	105 ## Hack to allow norm to work. Choose single to minimize memory.
0d755097d73f issymetric.m, ishermitian.m: Don't error on logical matrices (bug #42487). Rik <rik@octave.org> parents: 25228 diff changeset	106 A = single (A);
0d755097d73f issymetric.m, ishermitian.m: Don't error on logical matrices (bug #42487). Rik <rik@octave.org> parents: 25228 diff changeset	107 endif
25223 0f98040552de issymetric.m; Overhaul function and expand to check skew-symmetry (bug #53556). Rik <rik@octave.org> parents: 25054 diff changeset	108 norm_x = norm (A, Inf);
30558 83aeaba707d8 doc: Use TF for output variable in documentation for isXXX functions in scripts/ directory. Rik <rik@octave.org> parents: 29359 diff changeset	109 tf = norm_x == 0 \|\| norm (A + A.', Inf) / norm_x <= tol;
4026 8cb8eff3f44c [project @ 2002-08-09 06:54:46 by jwe] jwe parents: diff changeset	110 endif
8cb8eff3f44c [project @ 2002-08-09 06:54:46 by jwe] jwe parents: diff changeset	111 endif
8cb8eff3f44c [project @ 2002-08-09 06:54:46 by jwe] jwe parents: diff changeset	112
8cb8eff3f44c [project @ 2002-08-09 06:54:46 by jwe] jwe parents: diff changeset	113 endfunction
7265 7da4a5262e2e [project @ 2007-12-06 19:16:47 by jwe] jwe parents: 7017 diff changeset	114
14363 f3d52523cde1 Use Octave coding conventions in all m-file %!test blocks Rik <octave@nomad.inbox5.com> parents: 14138 diff changeset	115
f3d52523cde1 Use Octave coding conventions in all m-file %!test blocks Rik <octave@nomad.inbox5.com> parents: 14138 diff changeset	116 %!assert (issymmetric (1))
f3d52523cde1 Use Octave coding conventions in all m-file %!test blocks Rik <octave@nomad.inbox5.com> parents: 14138 diff changeset	117 %!assert (! issymmetric ([1, 2]))
f3d52523cde1 Use Octave coding conventions in all m-file %!test blocks Rik <octave@nomad.inbox5.com> parents: 14138 diff changeset	118 %!assert (issymmetric ([]))
f3d52523cde1 Use Octave coding conventions in all m-file %!test blocks Rik <octave@nomad.inbox5.com> parents: 14138 diff changeset	119 %!assert (issymmetric ([1, 2; 2, 1]))
f3d52523cde1 Use Octave coding conventions in all m-file %!test blocks Rik <octave@nomad.inbox5.com> parents: 14138 diff changeset	120 %!assert (issymmetric ([1, 2.1; 2, 1.1], 0.2))
f3d52523cde1 Use Octave coding conventions in all m-file %!test blocks Rik <octave@nomad.inbox5.com> parents: 14138 diff changeset	121 %!assert (issymmetric ([1, 2i; 2i, 1]))
26592 c0fa4a9eef95 Ensure boolean value when checking sparse matrices for symmetry/hermiticity. Kai T. Ohlhus <k.ohlhus@gmail.com> parents: 26376 diff changeset	122 %!assert (issymmetric (speye (100)), true) # Return full logical value.
28908 1572a4329015 issymmetric.m: Extend functionality to character matrices (bug #59264). Rik <rik@octave.org> parents: 28886 diff changeset	123 %!assert (! issymmetric ([0, 2; -2, 0], "nonskew"))
25223 0f98040552de issymetric.m; Overhaul function and expand to check skew-symmetry (bug #53556). Rik <rik@octave.org> parents: 25054 diff changeset	124 %!assert (issymmetric ([0, 2; -2, 0], "skew"))
0f98040552de issymetric.m; Overhaul function and expand to check skew-symmetry (bug #53556). Rik <rik@octave.org> parents: 25054 diff changeset	125 %!assert (! issymmetric ([0, 2; -2, eps], "skew"))
0f98040552de issymetric.m; Overhaul function and expand to check skew-symmetry (bug #53556). Rik <rik@octave.org> parents: 25054 diff changeset	126 %!assert (issymmetric ([0, 2; -2, eps], "skew", eps))
28908 1572a4329015 issymmetric.m: Extend functionality to character matrices (bug #59264). Rik <rik@octave.org> parents: 28886 diff changeset	127 %!assert (issymmetric (logical (eye (2))))
1572a4329015 issymmetric.m: Extend functionality to character matrices (bug #59264). Rik <rik@octave.org> parents: 28886 diff changeset	128 %!assert (! issymmetric (logical ([1 1; 0 1])))
1572a4329015 issymmetric.m: Extend functionality to character matrices (bug #59264). Rik <rik@octave.org> parents: 28886 diff changeset	129 %!assert (issymmetric (logical ([1 1; 0 1]), 0.5))
1572a4329015 issymmetric.m: Extend functionality to character matrices (bug #59264). Rik <rik@octave.org> parents: 28886 diff changeset	130 %!assert (! issymmetric ("test"))
1572a4329015 issymmetric.m: Extend functionality to character matrices (bug #59264). Rik <rik@octave.org> parents: 28886 diff changeset	131 %!assert (issymmetric ("t"))
1572a4329015 issymmetric.m: Extend functionality to character matrices (bug #59264). Rik <rik@octave.org> parents: 28886 diff changeset	132 %!assert (issymmetric (["te"; "et"]))
14363 f3d52523cde1 Use Octave coding conventions in all m-file %!test blocks Rik <octave@nomad.inbox5.com> parents: 14138 diff changeset	133
25223 0f98040552de issymetric.m; Overhaul function and expand to check skew-symmetry (bug #53556). Rik <rik@octave.org> parents: 25054 diff changeset	134 ## Test input validation
28886 d8318c12d903 test: remove unnecessary BIST tests in m-files checking for excessive number of inputs. Rik <rik@octave.org> parents: 28789 diff changeset	135 %!error <Invalid call> issymmetric ()
25223 0f98040552de issymetric.m; Overhaul function and expand to check skew-symmetry (bug #53556). Rik <rik@octave.org> parents: 25054 diff changeset	136 %!error <second argument must be> issymmetric (1, {"skew"})
28908 1572a4329015 issymmetric.m: Extend functionality to character matrices (bug #59264). Rik <rik@octave.org> parents: 28886 diff changeset	137 %!error <A must be a numeric,.* matrix> issymmetric ({1})
25223 0f98040552de issymetric.m; Overhaul function and expand to check skew-symmetry (bug #53556). Rik <rik@octave.org> parents: 25054 diff changeset	138 %!error <SKEWOPT must be 'skew' or 'nonskew'> issymmetric (1, "foobar")
0f98040552de issymetric.m; Overhaul function and expand to check skew-symmetry (bug #53556). Rik <rik@octave.org> parents: 25054 diff changeset	139 %!error <TOL must be a scalar .= 0> issymmetric (1, "skew", {1})
0f98040552de issymetric.m; Overhaul function and expand to check skew-symmetry (bug #53556). Rik <rik@octave.org> parents: 25054 diff changeset	140 %!error <TOL must be a scalar .= 0> issymmetric (1, "skew", [1 1])
0f98040552de issymetric.m; Overhaul function and expand to check skew-symmetry (bug #53556). Rik <rik@octave.org> parents: 25054 diff changeset	141 %!error <TOL must be a scalar .= 0> issymmetric (1, -1)

Mercurial > octave

annotate scripts/linear-algebra/issymmetric.m @ 33632:fed0dc6fd44c default tip @