6 namespace margait_contrib
9 const double PI = 3.1415926535897932384626433832795;
10 const double PII = 2.0*PI;
11 const double PI2 = 1.5707963267948965579989817342721;
12 const double PI4 = 0.78539816339744830961566084581988;
13 const double SPI = 1.7724538509055160272981674833411;
14 const double EPSILON = 0.000001;