view liboctave/SparsedbleLU.h @ 8966:1bba53c0a38d

Implement diag + sparse, diag - sparse, sparse + diag, sparse - diag. Date: Mon, 9 Mar 2009 17:45:22 -0400 This does not use the typical sparse-mx-ops generator. I suspect the sematics of elementwise multiplication and division to be rather controversial, so they are not included. If comparison operations are added, the implementation should be shifted over to use the typical generator. The template in Sparse-diag-op-defs.h likely could use const bools rather than functional argument operations. I haven't measured which is optimized more effectively. Also, the Octave binding layer in op-dm-scm.cc likely could use all sorts of macro or template trickery, but it's far easier to let Emacs handle it for now. That would be worth revisiting if further elementwise sparse and diagonal operations are added.
author Jason Riedy <jason@acm.org>
date Mon, 09 Mar 2009 17:49:14 -0400
parents eb63fbe60fab
children 4c0cdbe0acca
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/*

Copyright (C) 2004, 2005, 2006, 2007, 2008 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_LU_h)
#define octave_sparse_LU_h 1

#include "sparse-base-lu.h"
#include "dSparse.h"

class
OCTAVE_API
SparseLU : public sparse_base_lu <SparseMatrix, double, SparseMatrix, double>
{
public:

  SparseLU (void) 
    : sparse_base_lu <SparseMatrix, double, SparseMatrix, double> () { }

  SparseLU (const SparseMatrix& a, const Matrix& piv_thres = Matrix(),
	    bool scale = false);

  SparseLU (const SparseMatrix& a, const ColumnVector& Qinit, 
	    const Matrix& piv_thres = Matrix(), bool scale = false, 
	    bool FixedQ = false, double droptol = -1., 
	    bool milu = false, bool udiag = false);

  SparseLU (const SparseLU& a) 
    : sparse_base_lu <SparseMatrix, double, SparseMatrix, double> (a) { }

  SparseLU& operator = (const SparseLU& a)
    {
      if (this != &a)
	sparse_base_lu <SparseMatrix, double, SparseMatrix, double> 
	  :: operator = (a);

      return *this;
    }

  ~SparseLU (void) { }
};

#endif

/*
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*/