#include <G4LinLogInterpolation.hh>

Inheritance diagram for G4LinLogInterpolation:

Public Member Functions
G4double	Calculate (G4double point, G4int bin, const G4DataVector &energies, const G4DataVector &data) const override

G4double	Calculate (G4double point, G4int bin, const G4DataVector &energies, const G4DataVector &data, const G4DataVector &log_energies, const G4DataVector &log_data) const override

G4VDataSetAlgorithm *	Clone () const override

	G4LinLogInterpolation ()

	~G4LinLogInterpolation ()

Detailed Description

Definition at line 49 of file G4LinLogInterpolation.hh.

Constructor & Destructor Documentation

◆ G4LinLogInterpolation()

G4LinLogInterpolation::G4LinLogInterpolation ( )

explicit

Definition at line 41 of file G4LinLogInterpolation.cc.

42{ }

Referenced by Clone().

◆ ~G4LinLogInterpolation()

G4LinLogInterpolation::~G4LinLogInterpolation ( )

Definition at line 46 of file G4LinLogInterpolation.cc.

47{ }

Member Function Documentation

◆ Calculate() [1/2]

G4double G4LinLogInterpolation::Calculate	(	G4double	point,
		G4int	bin,
		const G4DataVector &	energies,
		const G4DataVector &	data
	)		const

overridevirtual

Implements G4VDataSetAlgorithm.

Definition at line 50 of file G4LinLogInterpolation.cc.

{
  //G4cout << "G4LinLogInterpolation is performed on dataset (2 arguments) " << G4endl;
  G4int nBins = data.size() - 1;
  G4double value = 0.;
  if (x < points[0])
    {
      value = 0.;
    }
  else if (bin < nBins)
    {
      G4double e1 = points[bin];
      G4double e2 = points[bin+1];
      G4double d1 = std::log(data[bin]);
      G4double d2 = std::log(data[bin+1]);
      value = G4Exp(d1 + (d2 - d1)*(x - e1)/ (e2 - e1));
    }
  else
    {
      value = data[nBins];
    }
  return value;
}

References d1, d2, e1, e2, and G4Exp().

◆ Calculate() [2/2]

G4double G4LinLogInterpolation::Calculate	(	G4double	point,
		G4int	bin,
		const G4DataVector &	energies,
		const G4DataVector &	data,
		const G4DataVector &	log_energies,
		const G4DataVector &	log_data
	)		const

overridevirtual

Implements G4VDataSetAlgorithm.

Definition at line 78 of file G4LinLogInterpolation.cc.

{
  //G4cout << "G4LinLogInterpolation is performed on dataset (4 arguments) " << G4endl;
  G4int nBins = data.size() - 1;
  G4double value = 0.;
  //G4double log_x = std::log10(x);
  if (x < points[0])
    {
      value = 0.;
    }
  else if (bin < nBins)
    {
      G4double e1 = points[bin];
      G4double e2 = points[bin+1];
      G4double d1 = data[bin];
      G4double d2 = data[bin+1];
      //G4double log_e1 = log_points[bin];
      //G4double log_e2 = log_points[bin+1];
      G4double log_d1 = log_data[bin];
      G4double log_d2 = log_data[bin+1];
      if (d1 > 0.0 && d2 > 0.0)
        {
      // Values e1, e2, d1 and d2 are the log values of the corresponding
      // original energy and data values. 
      // Simple linear interpolation performed
      // on logarithmic data should be equivalent to log-log interpolation
          //value = log_d1 + (log_d2 - log_d1)*(log_x - log_e1)/(log_e2 - log_e1);
          value = G4Exp(log_d1 + (log_d2 - log_d1)*(x - e1)/(e2 - e1));
        }
      else
        {
          if (d1 == 0.0) log_d1 = -300;
          if (d2 == 0.0) log_d2 = -300;
          value = G4Exp(log_d1 + (log_d2 - log_d1)*(x - e1)/(e2 - e1));
        }
   }
 else
   {
     value = data[nBins];
   }
  return value;
}