Charged.h

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/*
  Copyright (C) 2002-2021 CERN for the benefit of the ATLAS collaboration
*/

// Charged.h, (c) ATLAS Detector software
 
#ifndef TRKPARAMETERSBASE_CHARGED_H
#define TRKPARAMETERSBASE_CHARGED_H 1
 
#include <cmath>
 
namespace Trk
{
 
  class Charged
  {
  public:
   Charged(const double& charge = 1.):
      m_charge(charge)
    {}

    Charged(const Charged&) = default;

    Charged(Charged&&) = default;

    ~Charged() = default;

    Charged& operator=(const Charged&) = default;

    Charged& operator=(Charged&&) = default;

    double charge() const {return m_charge;}

    void setCharge(double charge) {m_charge = charge;}

    bool operator==(const Charged& rOther) const
    {
      constexpr double tolerance = 1e-8;
      return std::abs(charge() - rOther.charge()) < tolerance;
    }

    bool operator!=(const Charged& rOther) const
    {
      return !(*this == rOther);
    }
 
  private:
    double m_charge;         
  };
} // end of namespace Trk
 
#endif