view liboctave/Sparse-C.cc @ 14264:284656167c25

spinmap.m: Revamp function and make Matlab-compatible. * spinmap.m: Add 'inf' option. Add ability to have negative increments. Add demo block. Update docstring. * image/module.mk, plot/module.mk: Move spinmap to image/ directory to be with other colormap functions.
author Rik <octave@nomad.inbox5.com>
date Tue, 24 Jan 2012 17:12:09 -0800
parents 72c96de7a403
children
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/*

Copyright (C) 2004-2012 David Bateman
Copyright (C) 1998-2004 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

// Instantiate Sparse matrix of complex values.

#include "oct-cmplx.h"
#include "lo-mappers.h"
#include "lo-ieee.h"
#include "Sparse.h"
#include "Sparse.cc"


static double
xabs (const Complex& x)
{
  return (xisinf (x.real ()) || xisinf (x.imag ())) ? octave_Inf : abs (x);
}


template <>
bool
sparse_ascending_compare<Complex> (const Complex& a, const Complex& b)
{
  return (xisnan (b) || (xabs (a) < xabs (b))
          || ((xabs (a) == xabs (b)) && (arg (a) < arg (b))));
}

template <>
bool
sparse_descending_compare<Complex> (const Complex& a, const Complex& b)
{
  return (xisnan (a) || (xabs (a) > xabs (b))
          || ((xabs (a) == xabs (b)) && (arg (a) > arg (b))));
}

INSTANTIATE_SPARSE (Complex, OCTAVE_API);

#if 0
template std::ostream& operator << (std::ostream&, const Sparse<Complex>&);
#endif