constants.h

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#ifndef CONSTANTS_H
#define CONSTANTS_H
 
#include "types.h"
 
 
//null pointer
//#define null NULL
#define null nullptr
 
//NULL Index
#define NULL_INDEX std::numeric_limits<tIndex>::max()
 
//zero
template<typename T>
constexpr T EPSILON=std::numeric_limits<T>::epsilon();
 
constexpr tReal R_EPSILON=EPSILON<tReal>;
constexpr tDouble D_EPSILON=EPSILON<tDouble>;
constexpr tFloat F_EPSILON=EPSILON<tFloat>;
constexpr tLDouble LD_EPSILON=EPSILON<tLDouble>;
 
//pi
template<typename T>
constexpr T PI=(T) 3.141592653589793238462643383795;
 
constexpr tReal R_PI=PI<tReal>;
constexpr tFloat F_PI=PI<tFloat>;
constexpr tDouble D_PI=PI<tDouble>;
constexpr tLDouble  LD_PI=PI<tLDouble>;
 
#endif