Mercurial > octave-libgccjit
diff 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> |
|---|---|
| date | Mon, 09 Mar 2009 17:49:13 -0400 |
| parents | d1eab3ddb02d |
| children | 1bba53c0a38d |
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--- a/liboctave/ChangeLog Thu Mar 12 17:08:14 2009 -0400 +++ b/liboctave/ChangeLog Mon Mar 09 17:49:13 2009 -0400 @@ -1,3 +1,18 @@ +2009-03-08 Jason Riedy <jason@acm.org> + + * Sparse-diag-op-defs.h (octave_impl::do_mul_dm_sm) + (octave_impl::do_mul_sm_dm): New template + functions. Implementations for sparse * diag and diag * sparse. + + * CSparse.h (operator *, trans_mul, herm_mul): Add overloads for + DiagMatrix and ComplexDiagMatrix. + * CSparse.cc (operator *, trans_mul, herm_mul): Implement + operations by calling approprate functions in + Sparse-diag-op-defs.h. + * dSparse.h (operator *, trans_mul): Add overloads for DiagMatrix. + * dSparse.cc (operator *, trans_mul): Implement operations by + calling approprate functions in Sparse-diag-op-defs.h. + 2009-03-12 John W. Eaton <jwe@octave.org> * oct-inttypes.h (bitshift): Apply mask even if not shifting.