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//=========================================================
// MusE
// Linux Music Editor
// $Id: mmath.h,v 1.1.1.1 2003/10/27 18:54:47 wschweer Exp $
//
// (C) Copyright 2000 Werner Schweer (ws@seh.de)
//
// This program 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; version 2 of
// the License, or (at your option) any later version.
//
// This program 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 this program; if not, write to the Free Software
// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
//
//=========================================================
#ifndef __MATH_H__
#define __MATH_H__
#define LOG_MIN 1.0e-100
#define LOG_MAX 1.0e100
namespace MusECore {
double qwtCeil125(double x);
double qwtFloor125(double x);
void qwtTwistArray(double *array, int size);
int qwtChkMono(double *array, int size);
void qwtLinSpace(double *array, int size, double xmin, double xmax);
void qwtLogSpace(double *array, int size, double xmin, double xmax);
template <class T>
inline int qwtSign(const T& x)
{
if (x > T(0))
return 1;
else if (x < T(0))
return (-1);
else
return 0;
}
inline int qwtInt(double x)
{
return int(rint(x));
}
template <class T>
inline T qwtAbs (const T& x)
{
return( x > T(0) ? x : -x );
}
template <class T>
inline const T& qwtMax (const T& x, const T& y)
{
return ( x > y ? x : y );
}
template <class T>
inline const T& qwtMin ( const T& x, const T& y)
{
return ( x < y ? x : y );
}
template <class T>
T qwtLim(const T& x, const T& x1, const T& x2)
{
T rv;
T xmin, xmax;
xmin = qwtMin(x1, x2);
xmax = qwtMax(x1, x2);
if ( x < xmin )
rv = xmin;
else if ( x > xmax )
rv = xmax;
else
rv = x;
return rv;
}
}
#endif
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