Import Geant4 9.5.0 source tree

source/analysis/include/tools/math

@@ -0,0 +1,45 @@
+// 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 = 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