Pi.h

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#ifndef GeometryVector_Geom_Pi_h
#define GeometryVector_Geom_Pi_h

namespace Geom {

  inline constexpr double pi()     {return     3.141592653589793238;}
  inline constexpr double twoPi()  {return 2. *3.141592653589793238;}
  inline constexpr double halfPi() {return 0.5*3.141592653589793238;}

  inline constexpr float fpi()     {return     3.141592653589793238f;}
  inline constexpr float ftwoPi()  {return 2.f *3.141592653589793238f;}
  inline constexpr float fhalfPi() {return 0.5f*3.141592653589793238f;}


}

#endif