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view test/test_unwind.m @ 8964:f4f4d65faaa0
Implement sparse * diagonal and diagonal * sparse operations, double-prec only.
Date: Sun, 8 Mar 2009 16:28:18 -0400
These preserve sparsity, so eye(5) * sprand (5, 5, .2) is *sparse*
and not dense. This may affect people who use multiplication by
eye() rather than full().
The liboctave routines do *not* check if arguments are scalars in
disguise. There is a type problem with checking at that level. I
suspect we want diag * "sparse scalar" to stay diagonal, but we have
to return a sparse matrix at the liboctave. Rather than worrying
about that in liboctave, we cope with it when binding to Octave and
return the correct higher-level type.
The implementation is in Sparse-diag-op-defs.h rather than
Sparse-op-defs.h to limit recompilation. And the implementations
are templates rather than macros to produce better compiler errors
and debugging information.
| author | Jason Riedy <jason@acm.org> |
|---|---|
| date | Mon, 09 Mar 2009 17:49:13 -0400 |
| parents | a1dbe9d80eee |
| children | f5b51f54f44e |
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## Copyright (C) 2006, 2007 John W. Eaton ## ## This file is part of Octave. ## ## Octave is free software; you can redistribute it and/or modify it ## under the terms of the GNU General Public License as published by ## the Free Software Foundation; either version 3 of the License, or (at ## your option) any later version. ## ## Octave is distributed in the hope that it will be useful, but ## WITHOUT ANY WARRANTY; without even the implied warranty of ## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU ## General Public License for more details. ## ## You should have received a copy of the GNU General Public License ## along with Octave; see the file COPYING. If not, see ## <http://www.gnu.org/licenses/>. %% Automatically generated from DejaGNU files %% test/octave.test/unwind/unwind-1.m %!function y = f (x) %! global g; %! save_g = g; %! unwind_protect %! g = 0; %! y = g; %! [1,2;x]; %! g = 1; %! y = [y, g]; %! unwind_protect_cleanup %! g = save_g; %! y = [y, g]; %! end_unwind_protect %!test %! global g = -1; %! y = f ([3,4]); %! assert(y,[0,1,-1]); %% test/octave.test/unwind/unwind-2.m %!function y = f (x) %! global g; %! save_g = g; %! unwind_protect %! g = 0; %! y = g; %! [1,2;x]; %! g = 1; %! y = [y, g]; %! unwind_protect_cleanup %! g = save_g; %! y = [y, g]; %! assert(y,[0,-1]); %! end_unwind_protect %!test %! global g = -1; %! fail("y = f (3);","number of columns must match");