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comparison liboctave/ChangeLog @ 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 | d1eab3ddb02d |
children | 1bba53c0a38d |
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8963:d1eab3ddb02d | 8964:f4f4d65faaa0 |
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1 2009-03-08 Jason Riedy <jason@acm.org> | |
2 | |
3 * Sparse-diag-op-defs.h (octave_impl::do_mul_dm_sm) | |
4 (octave_impl::do_mul_sm_dm): New template | |
5 functions. Implementations for sparse * diag and diag * sparse. | |
6 | |
7 * CSparse.h (operator *, trans_mul, herm_mul): Add overloads for | |
8 DiagMatrix and ComplexDiagMatrix. | |
9 * CSparse.cc (operator *, trans_mul, herm_mul): Implement | |
10 operations by calling approprate functions in | |
11 Sparse-diag-op-defs.h. | |
12 * dSparse.h (operator *, trans_mul): Add overloads for DiagMatrix. | |
13 * dSparse.cc (operator *, trans_mul): Implement operations by | |
14 calling approprate functions in Sparse-diag-op-defs.h. | |
15 | |
1 2009-03-12 John W. Eaton <jwe@octave.org> | 16 2009-03-12 John W. Eaton <jwe@octave.org> |
2 | 17 |
3 * oct-inttypes.h (bitshift): Apply mask even if not shifting. | 18 * oct-inttypes.h (bitshift): Apply mask even if not shifting. |
4 From Seb Astien <se6astien2@googlemail.com>. | 19 From Seb Astien <se6astien2@googlemail.com>. |
5 | 20 |