EForwardBackward.h

/**************************************************************************
 * basf2 (Belle II Analysis Software Framework)                           *
 * Author: The Belle II Collaboration                                     *
 *                                                                        *
 * See git log for contributors and copyright holders.                    *
 * This file is licensed under LGPL-3.0, see LICENSE.md.                  *
 **************************************************************************/
#pragma once
 
#include <cstdlib> // for abs
#include <climits>
 
namespace Belle2 {
  namespace TrackFindingCDC {
 
    namespace NForwardBackward {
 
      enum EForwardBackward : signed short {
 
        c_Forward = 1,
 
        c_Unknown = 0,
 
        c_Backward = -1,
 
        c_Invalid = SHRT_MIN,
      };
 
      inline EForwardBackward reversed(EForwardBackward eForwardBackward)
      { return EForwardBackward(-eForwardBackward); }
 
      inline bool isValid(EForwardBackward eForwardBackward)
      { return std::abs(eForwardBackward) <= 1; }
    }
 
    using EForwardBackward = NForwardBackward::EForwardBackward;
 
  }
}