octave-nkf: scripts/linear-algebra/linsolve.m annotate

annotate scripts/linear-algebra/linsolve.m @ 20815:a260a6acb70f

fix test failures introduced by a22d8a2eb0e5 * scripts/ode/private/integrate_adaptive.m: fix stepping backwards, fix invocation of OutputFcn, fix text of some error messages * scripts/ode/private/integrate_const.m: remove use of option OutputSave * scripts/ode/private/integrate_n_steps.m: remove use of option OutputSave

author	Carlo de Falco <carlo.defalco@polimi.it>
date	Sun, 11 Oct 2015 23:09:01 +0200
parents	014e942ac29f
children

rev	line source
19898 4197fc428c7d maint: Update copyright notices for 2015. John W. Eaton <jwe@octave.org> parents: 19790 diff changeset	1 ## Copyright (C) 2013-2015 Nir Krakauer
17499 c3a3532e3d98 linsolve.m: Add new function for Matlab compatibility. Nir Krakauer < nkrakauer@ccny.cuny.edu> parents: diff changeset	2 ##
17795 0a8c35ae5ce1 maint: Fix various problems with GPL copyright statements. Rik <rik@octave.org> parents: 17500 diff changeset	3 ## This file is part of Octave.
0a8c35ae5ce1 maint: Fix various problems with GPL copyright statements. Rik <rik@octave.org> parents: 17500 diff changeset	4 ##
0a8c35ae5ce1 maint: Fix various problems with GPL copyright statements. Rik <rik@octave.org> parents: 17500 diff changeset	5 ## Octave is free software; you can redistribute it and/or modify
17499 c3a3532e3d98 linsolve.m: Add new function for Matlab compatibility. Nir Krakauer < nkrakauer@ccny.cuny.edu> parents: diff changeset	6 ## it under the terms of the GNU General Public License as published by
c3a3532e3d98 linsolve.m: Add new function for Matlab compatibility. Nir Krakauer < nkrakauer@ccny.cuny.edu> parents: diff changeset	7 ## the Free Software Foundation; either version 3 of the License, or
c3a3532e3d98 linsolve.m: Add new function for Matlab compatibility. Nir Krakauer < nkrakauer@ccny.cuny.edu> parents: diff changeset	8 ## (at your option) any later version.
c3a3532e3d98 linsolve.m: Add new function for Matlab compatibility. Nir Krakauer < nkrakauer@ccny.cuny.edu> parents: diff changeset	9 ##
17795 0a8c35ae5ce1 maint: Fix various problems with GPL copyright statements. Rik <rik@octave.org> parents: 17500 diff changeset	10 ## Octave is distributed in the hope that it will be useful,
17499 c3a3532e3d98 linsolve.m: Add new function for Matlab compatibility. Nir Krakauer < nkrakauer@ccny.cuny.edu> parents: diff changeset	11 ## but WITHOUT ANY WARRANTY; without even the implied warranty of
c3a3532e3d98 linsolve.m: Add new function for Matlab compatibility. Nir Krakauer < nkrakauer@ccny.cuny.edu> parents: diff changeset	12 ## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
c3a3532e3d98 linsolve.m: Add new function for Matlab compatibility. Nir Krakauer < nkrakauer@ccny.cuny.edu> parents: diff changeset	13 ## GNU General Public License for more details.
c3a3532e3d98 linsolve.m: Add new function for Matlab compatibility. Nir Krakauer < nkrakauer@ccny.cuny.edu> parents: diff changeset	14 ##
c3a3532e3d98 linsolve.m: Add new function for Matlab compatibility. Nir Krakauer < nkrakauer@ccny.cuny.edu> parents: diff changeset	15 ## You should have received a copy of the GNU General Public License
17795 0a8c35ae5ce1 maint: Fix various problems with GPL copyright statements. Rik <rik@octave.org> parents: 17500 diff changeset	16 ## along with Octave; If not, see <http://www.gnu.org/licenses/>.
17499 c3a3532e3d98 linsolve.m: Add new function for Matlab compatibility. Nir Krakauer < nkrakauer@ccny.cuny.edu> parents: diff changeset	17
c3a3532e3d98 linsolve.m: Add new function for Matlab compatibility. Nir Krakauer < nkrakauer@ccny.cuny.edu> parents: diff changeset	18 ## -- texinfo --
17500 b66f068e4468 linsolve.m: Use Octave coding conventions. Rik <rik@octave.org> parents: 17499 diff changeset	19 ## @deftypefn {Function File} {@var{x} =} linsolve (@var{A}, @var{b})
b66f068e4468 linsolve.m: Use Octave coding conventions. Rik <rik@octave.org> parents: 17499 diff changeset	20 ## @deftypefnx {Function File} {@var{x} =} linsolve (@var{A}, @var{b}, @var{opts})
b66f068e4468 linsolve.m: Use Octave coding conventions. Rik <rik@octave.org> parents: 17499 diff changeset	21 ## @deftypefnx {Function File} {[@var{x}, @var{R}] =} linsolve (@dots{})
b66f068e4468 linsolve.m: Use Octave coding conventions. Rik <rik@octave.org> parents: 17499 diff changeset	22 ## Solve the linear system @code{A*x = b}.
17499 c3a3532e3d98 linsolve.m: Add new function for Matlab compatibility. Nir Krakauer < nkrakauer@ccny.cuny.edu> parents: diff changeset	23 ##
17500 b66f068e4468 linsolve.m: Use Octave coding conventions. Rik <rik@octave.org> parents: 17499 diff changeset	24 ## With no options, this function is equivalent to the left division operator
b66f068e4468 linsolve.m: Use Octave coding conventions. Rik <rik@octave.org> parents: 17499 diff changeset	25 ## @w{(@code{x = A \ b})} or the matrix-left-divide function
b66f068e4468 linsolve.m: Use Octave coding conventions. Rik <rik@octave.org> parents: 17499 diff changeset	26 ## @w{(@code{x = mldivide (A, b)})}.
17499 c3a3532e3d98 linsolve.m: Add new function for Matlab compatibility. Nir Krakauer < nkrakauer@ccny.cuny.edu> parents: diff changeset	27 ##
17500 b66f068e4468 linsolve.m: Use Octave coding conventions. Rik <rik@octave.org> parents: 17499 diff changeset	28 ## Octave ordinarily examines the properties of the matrix @var{A} and chooses
b66f068e4468 linsolve.m: Use Octave coding conventions. Rik <rik@octave.org> parents: 17499 diff changeset	29 ## a solver that best matches the matrix. By passing a structure @var{opts}
b66f068e4468 linsolve.m: Use Octave coding conventions. Rik <rik@octave.org> parents: 17499 diff changeset	30 ## to @code{linsolve} you can inform Octave directly about the matrix @var{A}.
b66f068e4468 linsolve.m: Use Octave coding conventions. Rik <rik@octave.org> parents: 17499 diff changeset	31 ## In this case Octave will skip the matrix examination and proceed directly
b66f068e4468 linsolve.m: Use Octave coding conventions. Rik <rik@octave.org> parents: 17499 diff changeset	32 ## to solving the linear system.
17499 c3a3532e3d98 linsolve.m: Add new function for Matlab compatibility. Nir Krakauer < nkrakauer@ccny.cuny.edu> parents: diff changeset	33 ##
17500 b66f068e4468 linsolve.m: Use Octave coding conventions. Rik <rik@octave.org> parents: 17499 diff changeset	34 ## @strong{Warning:} If the matrix @var{A} does not have the properties
b66f068e4468 linsolve.m: Use Octave coding conventions. Rik <rik@octave.org> parents: 17499 diff changeset	35 ## listed in the @var{opts} structure then the result will not be accurate
b66f068e4468 linsolve.m: Use Octave coding conventions. Rik <rik@octave.org> parents: 17499 diff changeset	36 ## AND no warning will be given. When in doubt, let Octave examine the matrix
b66f068e4468 linsolve.m: Use Octave coding conventions. Rik <rik@octave.org> parents: 17499 diff changeset	37 ## and choose the appropriate solver as this step takes little time and the
b66f068e4468 linsolve.m: Use Octave coding conventions. Rik <rik@octave.org> parents: 17499 diff changeset	38 ## result is cached so that it is only done once per linear system.
b66f068e4468 linsolve.m: Use Octave coding conventions. Rik <rik@octave.org> parents: 17499 diff changeset	39 ##
b66f068e4468 linsolve.m: Use Octave coding conventions. Rik <rik@octave.org> parents: 17499 diff changeset	40 ## Possible @var{opts} fields (set value to true/false):
b66f068e4468 linsolve.m: Use Octave coding conventions. Rik <rik@octave.org> parents: 17499 diff changeset	41 ##
17499 c3a3532e3d98 linsolve.m: Add new function for Matlab compatibility. Nir Krakauer < nkrakauer@ccny.cuny.edu> parents: diff changeset	42 ## @table @asis
17500 b66f068e4468 linsolve.m: Use Octave coding conventions. Rik <rik@octave.org> parents: 17499 diff changeset	43 ## @item LT
b66f068e4468 linsolve.m: Use Octave coding conventions. Rik <rik@octave.org> parents: 17499 diff changeset	44 ## @var{A} is lower triangular
b66f068e4468 linsolve.m: Use Octave coding conventions. Rik <rik@octave.org> parents: 17499 diff changeset	45 ##
b66f068e4468 linsolve.m: Use Octave coding conventions. Rik <rik@octave.org> parents: 17499 diff changeset	46 ## @item UT
b66f068e4468 linsolve.m: Use Octave coding conventions. Rik <rik@octave.org> parents: 17499 diff changeset	47 ## @var{A} is upper triangular
b66f068e4468 linsolve.m: Use Octave coding conventions. Rik <rik@octave.org> parents: 17499 diff changeset	48 ##
b66f068e4468 linsolve.m: Use Octave coding conventions. Rik <rik@octave.org> parents: 17499 diff changeset	49 ## @item UHESS
b66f068e4468 linsolve.m: Use Octave coding conventions. Rik <rik@octave.org> parents: 17499 diff changeset	50 ## @var{A} is upper Hessenberg (currently makes no difference)
b66f068e4468 linsolve.m: Use Octave coding conventions. Rik <rik@octave.org> parents: 17499 diff changeset	51 ##
b66f068e4468 linsolve.m: Use Octave coding conventions. Rik <rik@octave.org> parents: 17499 diff changeset	52 ## @item SYM
b66f068e4468 linsolve.m: Use Octave coding conventions. Rik <rik@octave.org> parents: 17499 diff changeset	53 ## @var{A} is symmetric or complex Hermitian (currently makes no difference)
b66f068e4468 linsolve.m: Use Octave coding conventions. Rik <rik@octave.org> parents: 17499 diff changeset	54 ##
b66f068e4468 linsolve.m: Use Octave coding conventions. Rik <rik@octave.org> parents: 17499 diff changeset	55 ## @item POSDEF
b66f068e4468 linsolve.m: Use Octave coding conventions. Rik <rik@octave.org> parents: 17499 diff changeset	56 ## @var{A} is positive definite
b66f068e4468 linsolve.m: Use Octave coding conventions. Rik <rik@octave.org> parents: 17499 diff changeset	57 ##
b66f068e4468 linsolve.m: Use Octave coding conventions. Rik <rik@octave.org> parents: 17499 diff changeset	58 ## @item RECT
b66f068e4468 linsolve.m: Use Octave coding conventions. Rik <rik@octave.org> parents: 17499 diff changeset	59 ## @var{A} is general rectangular (currently makes no difference)
b66f068e4468 linsolve.m: Use Octave coding conventions. Rik <rik@octave.org> parents: 17499 diff changeset	60 ##
b66f068e4468 linsolve.m: Use Octave coding conventions. Rik <rik@octave.org> parents: 17499 diff changeset	61 ## @item TRANSA
b66f068e4468 linsolve.m: Use Octave coding conventions. Rik <rik@octave.org> parents: 17499 diff changeset	62 ## Solve @code{A'*x = b} by @code{transpose (A) \ b}
17499 c3a3532e3d98 linsolve.m: Add new function for Matlab compatibility. Nir Krakauer < nkrakauer@ccny.cuny.edu> parents: diff changeset	63 ## @end table
c3a3532e3d98 linsolve.m: Add new function for Matlab compatibility. Nir Krakauer < nkrakauer@ccny.cuny.edu> parents: diff changeset	64 ##
17500 b66f068e4468 linsolve.m: Use Octave coding conventions. Rik <rik@octave.org> parents: 17499 diff changeset	65 ## The optional second output @var{R} is the inverse condition number of
b66f068e4468 linsolve.m: Use Octave coding conventions. Rik <rik@octave.org> parents: 17499 diff changeset	66 ## @var{A} (zero if matrix is singular).
b66f068e4468 linsolve.m: Use Octave coding conventions. Rik <rik@octave.org> parents: 17499 diff changeset	67 ## @seealso{mldivide, matrix_type, rcond}
17499 c3a3532e3d98 linsolve.m: Add new function for Matlab compatibility. Nir Krakauer < nkrakauer@ccny.cuny.edu> parents: diff changeset	68 ## @end deftypefn
c3a3532e3d98 linsolve.m: Add new function for Matlab compatibility. Nir Krakauer < nkrakauer@ccny.cuny.edu> parents: diff changeset	69
c3a3532e3d98 linsolve.m: Add new function for Matlab compatibility. Nir Krakauer < nkrakauer@ccny.cuny.edu> parents: diff changeset	70 ## Author: Nir Krakauer <nkrakauer@ccny.cuny.edu>
c3a3532e3d98 linsolve.m: Add new function for Matlab compatibility. Nir Krakauer < nkrakauer@ccny.cuny.edu> parents: diff changeset	71
17500 b66f068e4468 linsolve.m: Use Octave coding conventions. Rik <rik@octave.org> parents: 17499 diff changeset	72 function [x, R] = linsolve (A, b, opts)
17499 c3a3532e3d98 linsolve.m: Add new function for Matlab compatibility. Nir Krakauer < nkrakauer@ccny.cuny.edu> parents: diff changeset	73
17500 b66f068e4468 linsolve.m: Use Octave coding conventions. Rik <rik@octave.org> parents: 17499 diff changeset	74 if (nargin < 2 \|\| nargin > 3)
b66f068e4468 linsolve.m: Use Octave coding conventions. Rik <rik@octave.org> parents: 17499 diff changeset	75 print_usage ();
b66f068e4468 linsolve.m: Use Octave coding conventions. Rik <rik@octave.org> parents: 17499 diff changeset	76 endif
b66f068e4468 linsolve.m: Use Octave coding conventions. Rik <rik@octave.org> parents: 17499 diff changeset	77
b66f068e4468 linsolve.m: Use Octave coding conventions. Rik <rik@octave.org> parents: 17499 diff changeset	78 if (! (isnumeric (A) && isnumeric (b)))
b66f068e4468 linsolve.m: Use Octave coding conventions. Rik <rik@octave.org> parents: 17499 diff changeset	79 error ("linsolve: A and B must be numeric");
17499 c3a3532e3d98 linsolve.m: Add new function for Matlab compatibility. Nir Krakauer < nkrakauer@ccny.cuny.edu> parents: diff changeset	80 endif
17500 b66f068e4468 linsolve.m: Use Octave coding conventions. Rik <rik@octave.org> parents: 17499 diff changeset	81
20448 014e942ac29f linsolve.m: Fix regression when calling linsolve with 2 arguments (bug #45212) Mike Miller <mtmiller@octave.org> parents: 20240 diff changeset	82 trans_A = false;
014e942ac29f linsolve.m: Fix regression when calling linsolve with 2 arguments (bug #45212) Mike Miller <mtmiller@octave.org> parents: 20240 diff changeset	83
17500 b66f068e4468 linsolve.m: Use Octave coding conventions. Rik <rik@octave.org> parents: 17499 diff changeset	84 ## Process any opts
b66f068e4468 linsolve.m: Use Octave coding conventions. Rik <rik@octave.org> parents: 17499 diff changeset	85 if (nargin > 2)
b66f068e4468 linsolve.m: Use Octave coding conventions. Rik <rik@octave.org> parents: 17499 diff changeset	86 if (! isstruct (opts))
b66f068e4468 linsolve.m: Use Octave coding conventions. Rik <rik@octave.org> parents: 17499 diff changeset	87 error ("linsolve: OPTS must be a structure");
b66f068e4468 linsolve.m: Use Octave coding conventions. Rik <rik@octave.org> parents: 17499 diff changeset	88 endif
b66f068e4468 linsolve.m: Use Octave coding conventions. Rik <rik@octave.org> parents: 17499 diff changeset	89 if (isfield (opts, "TRANSA") && opts.TRANSA)
b66f068e4468 linsolve.m: Use Octave coding conventions. Rik <rik@octave.org> parents: 17499 diff changeset	90 trans_A = true;
b66f068e4468 linsolve.m: Use Octave coding conventions. Rik <rik@octave.org> parents: 17499 diff changeset	91 endif
b66f068e4468 linsolve.m: Use Octave coding conventions. Rik <rik@octave.org> parents: 17499 diff changeset	92 if (isfield (opts, "POSDEF") && opts.POSDEF)
b66f068e4468 linsolve.m: Use Octave coding conventions. Rik <rik@octave.org> parents: 17499 diff changeset	93 A = matrix_type (A, "positive definite");
19790 446c46af4b42 strip trailing whitespace from most source files John W. Eaton <jwe@octave.org> parents: 17795 diff changeset	94 endif
17500 b66f068e4468 linsolve.m: Use Octave coding conventions. Rik <rik@octave.org> parents: 17499 diff changeset	95 if (isfield (opts, "LT") && opts.LT)
20240 91e1da1d1918 linsolve.m: Calculate solution in a BLAS-optimized way (bug #44722). Rik <rik@octave.org> parents: 19898 diff changeset	96 A = matrix_type (A, "lower");
91e1da1d1918 linsolve.m: Calculate solution in a BLAS-optimized way (bug #44722). Rik <rik@octave.org> parents: 19898 diff changeset	97 elseif (isfield (opts, "UT") && opts.UT)
91e1da1d1918 linsolve.m: Calculate solution in a BLAS-optimized way (bug #44722). Rik <rik@octave.org> parents: 19898 diff changeset	98 A = matrix_type (A, "upper");
19790 446c46af4b42 strip trailing whitespace from most source files John W. Eaton <jwe@octave.org> parents: 17795 diff changeset	99 endif
17499 c3a3532e3d98 linsolve.m: Add new function for Matlab compatibility. Nir Krakauer < nkrakauer@ccny.cuny.edu> parents: diff changeset	100 endif
17500 b66f068e4468 linsolve.m: Use Octave coding conventions. Rik <rik@octave.org> parents: 17499 diff changeset	101
20240 91e1da1d1918 linsolve.m: Calculate solution in a BLAS-optimized way (bug #44722). Rik <rik@octave.org> parents: 19898 diff changeset	102 ## This way is faster as the transpose is not calculated in Octave,
91e1da1d1918 linsolve.m: Calculate solution in a BLAS-optimized way (bug #44722). Rik <rik@octave.org> parents: 19898 diff changeset	103 ## but forwarded as a flag option to BLAS.
91e1da1d1918 linsolve.m: Calculate solution in a BLAS-optimized way (bug #44722). Rik <rik@octave.org> parents: 19898 diff changeset	104 if (trans_A)
91e1da1d1918 linsolve.m: Calculate solution in a BLAS-optimized way (bug #44722). Rik <rik@octave.org> parents: 19898 diff changeset	105 x = A' \ b;
91e1da1d1918 linsolve.m: Calculate solution in a BLAS-optimized way (bug #44722). Rik <rik@octave.org> parents: 19898 diff changeset	106 else
91e1da1d1918 linsolve.m: Calculate solution in a BLAS-optimized way (bug #44722). Rik <rik@octave.org> parents: 19898 diff changeset	107 x = A \ b;
91e1da1d1918 linsolve.m: Calculate solution in a BLAS-optimized way (bug #44722). Rik <rik@octave.org> parents: 19898 diff changeset	108 endif
17500 b66f068e4468 linsolve.m: Use Octave coding conventions. Rik <rik@octave.org> parents: 17499 diff changeset	109
b66f068e4468 linsolve.m: Use Octave coding conventions. Rik <rik@octave.org> parents: 17499 diff changeset	110 if (nargout > 1)
b66f068e4468 linsolve.m: Use Octave coding conventions. Rik <rik@octave.org> parents: 17499 diff changeset	111 if (issquare (A))
b66f068e4468 linsolve.m: Use Octave coding conventions. Rik <rik@octave.org> parents: 17499 diff changeset	112 R = rcond (A);
17499 c3a3532e3d98 linsolve.m: Add new function for Matlab compatibility. Nir Krakauer < nkrakauer@ccny.cuny.edu> parents: diff changeset	113 else
17500 b66f068e4468 linsolve.m: Use Octave coding conventions. Rik <rik@octave.org> parents: 17499 diff changeset	114 R = 0;
17499 c3a3532e3d98 linsolve.m: Add new function for Matlab compatibility. Nir Krakauer < nkrakauer@ccny.cuny.edu> parents: diff changeset	115 endif
c3a3532e3d98 linsolve.m: Add new function for Matlab compatibility. Nir Krakauer < nkrakauer@ccny.cuny.edu> parents: diff changeset	116 endif
20240 91e1da1d1918 linsolve.m: Calculate solution in a BLAS-optimized way (bug #44722). Rik <rik@octave.org> parents: 19898 diff changeset	117
17500 b66f068e4468 linsolve.m: Use Octave coding conventions. Rik <rik@octave.org> parents: 17499 diff changeset	118 endfunction
17499 c3a3532e3d98 linsolve.m: Add new function for Matlab compatibility. Nir Krakauer < nkrakauer@ccny.cuny.edu> parents: diff changeset	119
c3a3532e3d98 linsolve.m: Add new function for Matlab compatibility. Nir Krakauer < nkrakauer@ccny.cuny.edu> parents: diff changeset	120
17500 b66f068e4468 linsolve.m: Use Octave coding conventions. Rik <rik@octave.org> parents: 17499 diff changeset	121 %!test
20240 91e1da1d1918 linsolve.m: Calculate solution in a BLAS-optimized way (bug #44722). Rik <rik@octave.org> parents: 19898 diff changeset	122 %! n = 10;
20448 014e942ac29f linsolve.m: Fix regression when calling linsolve with 2 arguments (bug #45212) Mike Miller <mtmiller@octave.org> parents: 20240 diff changeset	123 %! A = rand (n);
014e942ac29f linsolve.m: Fix regression when calling linsolve with 2 arguments (bug #45212) Mike Miller <mtmiller@octave.org> parents: 20240 diff changeset	124 %! x = rand (n, 1);
014e942ac29f linsolve.m: Fix regression when calling linsolve with 2 arguments (bug #45212) Mike Miller <mtmiller@octave.org> parents: 20240 diff changeset	125 %! b = A * x;
014e942ac29f linsolve.m: Fix regression when calling linsolve with 2 arguments (bug #45212) Mike Miller <mtmiller@octave.org> parents: 20240 diff changeset	126 %! assert (linsolve (A, b), A \ b);
014e942ac29f linsolve.m: Fix regression when calling linsolve with 2 arguments (bug #45212) Mike Miller <mtmiller@octave.org> parents: 20240 diff changeset	127 %! assert (linsolve (A, b, struct ()), A \ b);
014e942ac29f linsolve.m: Fix regression when calling linsolve with 2 arguments (bug #45212) Mike Miller <mtmiller@octave.org> parents: 20240 diff changeset	128
014e942ac29f linsolve.m: Fix regression when calling linsolve with 2 arguments (bug #45212) Mike Miller <mtmiller@octave.org> parents: 20240 diff changeset	129 %!test
014e942ac29f linsolve.m: Fix regression when calling linsolve with 2 arguments (bug #45212) Mike Miller <mtmiller@octave.org> parents: 20240 diff changeset	130 %! n = 10;
20240 91e1da1d1918 linsolve.m: Calculate solution in a BLAS-optimized way (bug #44722). Rik <rik@octave.org> parents: 19898 diff changeset	131 %! A = triu (gallery ("condex", n));
17500 b66f068e4468 linsolve.m: Use Octave coding conventions. Rik <rik@octave.org> parents: 17499 diff changeset	132 %! x = rand (n, 1);
b66f068e4468 linsolve.m: Use Octave coding conventions. Rik <rik@octave.org> parents: 17499 diff changeset	133 %! b = A' * x;
b66f068e4468 linsolve.m: Use Octave coding conventions. Rik <rik@octave.org> parents: 17499 diff changeset	134 %! opts.UT = true;
b66f068e4468 linsolve.m: Use Octave coding conventions. Rik <rik@octave.org> parents: 17499 diff changeset	135 %! opts.TRANSA = true;
b66f068e4468 linsolve.m: Use Octave coding conventions. Rik <rik@octave.org> parents: 17499 diff changeset	136 %! assert (linsolve (A, b, opts), A' \ b);
17499 c3a3532e3d98 linsolve.m: Add new function for Matlab compatibility. Nir Krakauer < nkrakauer@ccny.cuny.edu> parents: diff changeset	137
17500 b66f068e4468 linsolve.m: Use Octave coding conventions. Rik <rik@octave.org> parents: 17499 diff changeset	138 %!error linsolve ()
b66f068e4468 linsolve.m: Use Octave coding conventions. Rik <rik@octave.org> parents: 17499 diff changeset	139 %!error linsolve (1)
b66f068e4468 linsolve.m: Use Octave coding conventions. Rik <rik@octave.org> parents: 17499 diff changeset	140 %!error linsolve (1,2,3)
b66f068e4468 linsolve.m: Use Octave coding conventions. Rik <rik@octave.org> parents: 17499 diff changeset	141 %!error <A and B must be numeric> linsolve ({1},2)
b66f068e4468 linsolve.m: Use Octave coding conventions. Rik <rik@octave.org> parents: 17499 diff changeset	142 %!error <A and B must be numeric> linsolve (1,{2})
b66f068e4468 linsolve.m: Use Octave coding conventions. Rik <rik@octave.org> parents: 17499 diff changeset	143 %!error <OPTS must be a structure> linsolve (1,2,3)

Mercurial > hg > octave-nkf

annotate scripts/linear-algebra/linsolve.m @ 20815:a260a6acb70f