view liboctave/CmplxDET.cc @ 1192:b6360f2d4fa6

[project @ 1995-03-30 21:38:35 by jwe]
author jwe
date Thu, 30 Mar 1995 21:38:35 +0000
parents 18933dbd5e43
children f93b7fa5e113
line wrap: on
line source

//                                        -*- C++ -*-
/*

Copyright (C) 1992, 1993, 1994, 1995 John W. Eaton

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 2, 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, write to the Free
Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.

*/

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

#include <math.h>
#include <float.h>

#include <Complex.h>

#include "CmplxDET.h"

int
ComplexDET::value_will_overflow (void) const
{
  return det[2].real () + 1 > log10 (DBL_MAX) ? 1 : 0;
}

int
ComplexDET::value_will_underflow (void) const
{
  return det[2].real () - 1 < log10 (DBL_MIN) ? 1 : 0;
}

Complex
ComplexDET::coefficient (void) const
{
  return det[0];
}

int
ComplexDET::exponent (void) const
{
  return (int) (det[1].real ());
}

Complex
ComplexDET::value (void) const
{
  return det[0] * pow (10.0, det[1].real ());
}

/*
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*/