Mercurial > octave-libgccjit
comparison test/test_diag_perm.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> |
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date | Mon, 09 Mar 2009 17:49:13 -0400 |
parents | 43aec7c168eb |
children | 42aff15e059b |
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8963:d1eab3ddb02d | 8964:f4f4d65faaa0 |
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132 %! d = rand (mn, 1); | 132 %! d = rand (mn, 1); |
133 %! D = diag (d, m, n); | 133 %! D = diag (d, m, n); |
134 %! Dslice = D (1:(m-3), 1:(n-2)); | 134 %! Dslice = D (1:(m-3), 1:(n-2)); |
135 %! assert (typeinfo (Dslice), "diagonal matrix"); | 135 %! assert (typeinfo (Dslice), "diagonal matrix"); |
136 | 136 |
137 ## preserve dense matrix structure | 137 ## preserve dense matrix structure when scaling |
138 %!assert (typeinfo (rand (8) * (3 * eye (8))), "matrix"); | 138 %!assert (typeinfo (rand (8) * (3 * eye (8))), "matrix"); |
139 %!assert (typeinfo ((3 * eye (8)) * rand (8)), "matrix"); | 139 %!assert (typeinfo ((3 * eye (8)) * rand (8)), "matrix"); |
140 | |
141 ## preserve sparse matrix structure when scaling | |
142 %!assert (typeinfo (sprand (8, 8, .5) * (3 * eye (8))), "sparse matrix"); | |
143 %!assert (typeinfo (sprand (8, 8, .5) * (3 * eye (8))'), "sparse matrix"); | |
144 %!assert (typeinfo (((3 + 2 * I ()) * eye (8)) * sprand (8, 8, .5)), "sparse complex matrix"); | |
145 %!assert (typeinfo (((3 + 2 * I ()) * eye (8))' * sprand (8, 8, .5)), "sparse complex matrix"); | |
146 %!assert (typeinfo (sprand (8, 8, .5) * ((3 + 2 * I ()) * eye (8)).'), "sparse complex matrix"); | |
140 | 147 |
141 ## scaling a matrix with exceptional values does not introduce new ones. | 148 ## scaling a matrix with exceptional values does not introduce new ones. |
142 %!test | 149 %!test |
143 %! n = 6; | 150 %! n = 6; |
144 %! dr = rand (n, 1); | 151 %! dr = rand (n, 1); |