angle0to2pi Namespace Reference

Functions
template<class valType >
constexpr valType	make0To2pi (valType angle)

Function Documentation

template<class valType >

constexpr valType angle0to2pi::make0To2pi ( valType  angle )

inline

Definition at line 67 of file deltaPhi.h.

References funct::abs(), constexpr, geometryDiff::epsilon, pileupReCalc_HLTpaths::trunc, and Geom::twoPi().

Referenced by magneticfield::bSector::bSector(), and Geom::NormalizeWrapper< T1, ZeroTo2pi >::normalize().

                                                     {
    constexpr valType twoPi = 2._pi;
    constexpr valType oneOverTwoPi = 1. / twoPi;
    constexpr valType epsilon = 1.e-13;

    if ((std::abs(angle) <= epsilon) || (std::abs(twoPi - std::abs(angle)) <= epsilon))
      return (0.);
    if (std::abs(angle) > twoPi) {
      valType nFac = trunc(angle * oneOverTwoPi);
      angle -= (nFac * twoPi);
      if (std::abs(angle) <= epsilon)
        return (0.);
    }
    if (angle < 0.)
      angle += twoPi;
    return (angle);
  }