view liboctave/sparse-sort.cc @ 10843:229675bb7647 ss-3-3-52

version is now 3.3.52
author John W. Eaton <jwe@octave.org>
date Sun, 01 Aug 2010 11:49:45 -0400
parents 07ebe522dac2
children fd0a3ac60b0e
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/*

Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009 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/>.

*/

#ifdef HAVE_CONFIG_H
#include <config.h>
#endif

#include <cassert>
#include <cstring>

#include "oct-sort.cc"
#include "quit.h"

#include "sparse-sort.h"

// A simple class and instantiation of the octave merge sort class
// to sort sparse data before matrix creation. This is significantly
// faster than using octave_qsort.

bool
octave_sparse_sidxl_comp (octave_sparse_sort_idxl* i, 
                          octave_sparse_sort_idxl* j)
{
  octave_idx_type tmp = i->c - j->c;
  if (tmp < 0)
    return true;
  else if (tmp > 0)
    return false;
  return  (i->r < j->r);
}

template class octave_sort<octave_sparse_sort_idxl *>;

// Need to know the original order of the sorted indexes in
// sparse assignments, and this class does that
bool
octave_idx_vector_comp (octave_idx_vector_sort* i,
                        octave_idx_vector_sort* j)
{
  return (i->i < j->i);
}

template class octave_sort<octave_idx_vector_sort *>;