Mercurial > octave-nkf
view src/sparse-xpow.h @ 8969:3ecbc236e2e0
Have sparse LU return permutation matrices rather than sparse matrices.
This could well impact user code. It'd be interesting to see if there
is any actual fall-out... Quite often, the permutation matrices are
applied to *dense* vectors. Returning permutation matrices rather
than sparse matrices is a slight performance enhancement, but likely
lost in the noise.
author | Jason Riedy <jason@acm.org> |
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date | Tue, 10 Mar 2009 21:54:49 -0400 |
parents | a1dbe9d80eee |
children | cd96d29c5efa |
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/* Copyright (C) 2004, 2005, 2007 David Bateman Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003, 2004 Andy Adler 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/>. */ #if !defined (octave_sparse_xpow_h) #define octave_sparse_xpow_h 1 #include "oct-cmplx.h" class SparseMatrix; class SparseComplexMatrix; class octave_value; extern octave_value xpow (const SparseMatrix& a, double b); extern octave_value xpow (const SparseComplexMatrix& a, double b); extern octave_value elem_xpow (double a, const SparseMatrix& b); extern octave_value elem_xpow (double a, const SparseComplexMatrix& b); extern octave_value elem_xpow (const SparseMatrix& a, double b); extern octave_value elem_xpow (const SparseMatrix& a, const SparseMatrix& b); extern octave_value elem_xpow (const SparseMatrix& a, const Complex& b); extern octave_value elem_xpow (const SparseMatrix& a, const SparseComplexMatrix& b); extern octave_value elem_xpow (const Complex& a, const SparseMatrix& b); extern octave_value elem_xpow (const Complex& a, const SparseComplexMatrix& b); extern octave_value elem_xpow (const SparseComplexMatrix& a, double b); extern octave_value elem_xpow (const SparseComplexMatrix& a, const SparseMatrix& b); extern octave_value elem_xpow (const SparseComplexMatrix& a, const Complex& b); extern octave_value elem_xpow (const SparseComplexMatrix& a, const SparseComplexMatrix& b); #endif /* ;;; Local Variables: *** ;;; mode: C++ *** ;;; End: *** */