BkgNeutronWeight.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.                  *
 **************************************************************************/
 
#ifndef BKGNEUTRONWEIGHT_H
#define BKGNEUTRONWEIGHT_H
 
#include <vector>
 
namespace Belle2 {
  class BkgNeutronWeight {
 
  public:
 
    static BkgNeutronWeight& getInstance();
 
    double getWeight(double ke);
 
  private:
 
    BkgNeutronWeight(void);
 
    void addPoint(double, double);
 
    void doSpline();
 
    int m_n;
 
    std::vector<double> m_x;
 
    std::vector<double> m_y;
 
    std::vector<double> m_b;
 
    std::vector<double> m_c;
 
    std::vector<double> m_d;
 
    static BkgNeutronWeight* m_Instance;
 
  };
 
} // end of namespace Belle2
 
#endif // BKGNEUTRONWEIGHT_H