G4LinLogInterpolation Class Reference

#include <G4LinLogInterpolation.hh>

Inheritance diagram for G4LinLogInterpolation:

Collaboration diagram for G4LinLogInterpolation:

Public Member Functions
	G4LinLogInterpolation ()
	~G4LinLogInterpolation ()
G4double	Calculate (G4double point, G4int bin, const G4DataVector &energies, const G4DataVector &data) const
G4double	Calculate (G4double point, G4int bin, const G4DataVector &energies, const G4DataVector &data, const G4DataVector &log_energies, const G4DataVector &log_data) const
virtual G4VDataSetAlgorithm *	Clone () const
Public Member Functions inherited from G4VDataSetAlgorithm
	G4VDataSetAlgorithm ()
virtual	~G4VDataSetAlgorithm ()

Detailed Description

Definition at line 50 of file G4LinLogInterpolation.hh.

Constructor & Destructor Documentation

G4LinLogInterpolation::G4LinLogInterpolation

(

)

Definition at line 41 of file G4LinLogInterpolation.cc.

{ }

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G4LinLogInterpolation::~G4LinLogInterpolation

(

)

Definition at line 47 of file G4LinLogInterpolation.cc.

{ }

Member Function Documentation

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

virtual

Implements G4VDataSetAlgorithm.

Definition at line 51 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;
}

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

virtual

Implements G4VDataSetAlgorithm.

Definition at line 77 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 loagarithmic 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;
}

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virtual G4VDataSetAlgorithm* G4LinLogInterpolation::Clone ( ) const

inlinevirtual

Implements G4VDataSetAlgorithm.

Definition at line 68 of file G4LinLogInterpolation.hh.

{ return new G4LinLogInterpolation; }

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The documentation for this class was generated from the following files:

• geant4.10.03.p01/source/processes/electromagnetic/lowenergy/include/G4LinLogInterpolation.hh
• geant4.10.03.p01/source/processes/electromagnetic/lowenergy/src/G4LinLogInterpolation.cc