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; }

}  // namespace Geom

#endif