G4INCLInterpolationTable.hh

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//
// INCL++ intra-nuclear cascade model
// Alain Boudard, CEA-Saclay, France
// Joseph Cugnon, University of Liege, Belgium
// Jean-Christophe David, CEA-Saclay, France
// Pekka Kaitaniemi, CEA-Saclay, France, and Helsinki Institute of Physics, Finland
// Sylvie Leray, CEA-Saclay, France
// Davide Mancusi, CEA-Saclay, France
//
#define INCLXX_IN_GEANT4_MODE 1

#include "globals.hh"

#ifndef G4INCLINTERPOLATIONTABLE_HH_
#define G4INCLINTERPOLATIONTABLE_HH_

#include "G4INCLIFunction1D.hh"
#include <algorithm>
#include <functional>
#include <sstream>

namespace G4INCL {

  class InterpolationNode {
    public:
      InterpolationNode(const G4double x0, const G4double y0, const G4double yPrime0) :
        x(x0),
        y(y0),
        yPrime(yPrime0)
    {}

      virtual ~InterpolationNode() {}

      G4bool operator<(const InterpolationNode &rhs) const {
        return (x < rhs.x);
      }

      G4bool operator<=(const InterpolationNode &rhs) const {
        return (x <= rhs.x);
      }

      G4bool operator>(const InterpolationNode &rhs) const {
        return (x > rhs.x);
      }

      G4bool operator>=(const InterpolationNode &rhs) const {
        return (x >= rhs.x);
      }

      G4double getX() const { return x; }
      G4double getY() const { return y; }
      G4double getYPrime() const { return yPrime; }

      void setX(const G4double x0) { x=x0; }
      void setY(const G4double y0) { y=y0; }
      void setYPrime(const G4double yPrime0) { yPrime=yPrime0; }

      std::string print() const {
        std::stringstream message;
        message << "x, y, yPrime: " << x << '\t' << y << '\t' << yPrime << '\n';
        return message.str();
      }

    protected:
      G4double x;
      G4double y;
      G4double yPrime;
  };

  class InterpolationTable : public IFunction1D {
    public:
      InterpolationTable(std::vector<G4double> const &x, std::vector<G4double> const &y);
      virtual ~InterpolationTable() {}

      unsigned int getNumberOfNodes() const { return nodes.size(); }

      std::vector<G4double> getNodeAbscissae() const;

      std::vector<G4double> getNodeValues() const;

      G4double operator()(const G4double x) const;

      std::string print() const;

    protected:
      InterpolationTable();

      void initDerivatives();

      std::vector<InterpolationNode> nodes;

  };

}

#endif // G4INCLINTERPOLATIONTABLE_HH_