MathConstant.h
/*
* Copyright (C) 2010 Regents of the University of Michigan
*
* 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, either version 3 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, see <http://www.gnu.org/licenses/>.
*/
#ifndef __MATHCONSTANT_H__
#define __MATHCONSTANT_H__
#ifdef _MSC_VER
#define _USE_MATH_DEFINES
#endif
#include <math.h>
#include <stdlib.h>
// Constants for numerical routines
//
#define TINY 1.0e-30 // A small number
#define ITMAX 200 // Maximum number of iterations
#define EPS 3.0e-7 // Relative accuracy
#define ZEPS 3.0e-10 // Precision around zero
#define FPMIN 1.0e-30 // Number near the smallest representable number
#define FPMAX 1.0e+100 // Number near the largest representable number
#define TOL 1.0e-6 // Zero SVD values below this
#define GOLD 0.61803399 // Golden ratio
#define CGOLD 0.38196601 // Complement of golden ratio
inline double square(double a)
{
return a * a;
}
inline double sign(double a, double b)
{
return b >= 0 ? fabs(a) : -fabs(a);
}
inline double min(double a, double b)
{
return a < b ? a : b;
}
inline double max(double a, double b)
{
return a > b ? a : b;
}
inline int square(int a)
{
return a * a;
}
inline int sign(int a, int b)
{
return b >= 0 ? abs(a) : -abs(a);
}
inline int min(int a, int b)
{
return a < b ? a : b;
}
inline int max(int a, int b)
{
return a > b ? a : b;
}
// Useful integer quantities
//
#define THIRTY_BIT_MASK 0x3FFFFFFF
#endif