Gabriele Cosmo
46 lines
1.2 KiB
Plaintext
46 lines
1.2 KiB
Plaintext
// Copyright (C) 2010, Guy Barrand. All rights reserved.
|
|
// See the file tools.license for terms.
|
|
|
|
#ifndef tools_math
|
|
#define tools_math
|
|
|
|
namespace tools {
|
|
|
|
//have : static const pi = 3.1415926535897931160E0; ???
|
|
|
|
//HEALPix lsconstants.h. Quite not the same as us.
|
|
//const double pi=3.141592653589793238462643383279502884197;
|
|
//const double twopi=6.283185307179586476925286766559005768394;
|
|
//const double fourpi=12.56637061435917295385057353311801153679;
|
|
//const double halfpi=1.570796326794896619231321691639751442099;
|
|
|
|
inline double pi() {return 3.1415926535897931160E0;}
|
|
inline double two_pi() {return 6.2831853071795862320E0;}
|
|
inline double half_pi() {return 1.5707963267948965580E0;}
|
|
|
|
inline double deg2rad() {return pi()/180.0;}
|
|
|
|
template <class T>
|
|
inline T power(const T& a_A,unsigned int a_B){
|
|
T v = T(1);
|
|
for(unsigned int i=0;i<a_B;i++) v *= a_A;
|
|
return v;
|
|
}
|
|
|
|
// for Lib/ExpFunc.
|
|
inline bool in_domain_all(double){return true;}
|
|
inline bool in_domain_log(double a_x){return (a_x>0?true:false);}
|
|
inline bool in_domain_tan(double a_x){
|
|
int n = int(a_x/half_pi());
|
|
if(a_x!=n*half_pi()) return true;
|
|
return (2*int(n/2)==n?true:false);
|
|
}
|
|
inline bool in_domain_acos(double a_x){
|
|
if((a_x<-1)||(1<a_x)) return false;
|
|
return true;
|
|
}
|
|
|
|
}
|
|
|
|
#endif
|