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annotate inst/linear_algebra_backend.m @ 254:2b51546a28f7

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Change default linear algebra back-end
author Eugenio Gianniti <eugenio.gianniti@mail.polimi.it>
date Sat, 26 Jul 2014 19:38:23 +0200
parents b1dc98050634
children 61830a4f9ab9
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Eugenio Gianniti <eugenio.gianniti@mail.polimi.it>
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1 ## Copyright (C) 2014 Eugenio Gianniti <eugenio.gianniti@mail.polimi.it>
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2 ##
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3 ## This program is free software; you can redistribute it and/or modify it under
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Eugenio Gianniti <eugenio.gianniti@mail.polimi.it>
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4 ## the terms of the GNU General Public License as published by the Free Software
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5 ## Foundation; either version 3 of the License, or (at your option) any later
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Eugenio Gianniti <eugenio.gianniti@mail.polimi.it>
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6 ## version.
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7 ##
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8 ## This program is distributed in the hope that it will be useful, but WITHOUT
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9 ## ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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10 ## FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
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11 ## details.
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12 ##
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13 ## You should have received a copy of the GNU General Public License along with
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14 ## this program; if not, see <http://www.gnu.org/licenses/>.
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15
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16 ## -*- texinfo -*-
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17 ## @deftypefn {Function File} @var{val} = linear_algebra_backend ()
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18 ## @deftypefnx {Function File} @var{old_val} = linear_algebra_backend (@var{new_val})
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19 ##
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20 ## Query or set the internal variable that specifies the linear algebra back-end
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21 ## to use when assembling systems, matrices or vectors. It defaults to "PETSc".
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22 ## uBLAS and PETSc are currently available.
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23 ##
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24 ## @end deftypefn
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25
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26 function output = linear_algebra_backend (varargin)
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27
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28 persistent backend = "PETSc";
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29 persistent opts = {"uBLAS",
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30 "PETSc"};
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31
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32 if (nargin > 1)
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33 print_usage ();
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34 else
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35 output = backend;
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36 if (nargin == 1)
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37 input = validatestring (varargin{1}, opts, "linear_algebra_backend",
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38 "new_val");
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39 backend = input;
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40 endif
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41 endif
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42
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43 endfunction