G4LinLogInterpolation Class Reference

#include <G4LinLogInterpolation.hh>

Inheritance diagram for G4LinLogInterpolation:

G4VDataSetAlgorithm

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 G4VDataSetAlgorithmClone () const

Detailed Description

Definition at line 50 of file G4LinLogInterpolation.hh.


Constructor & Destructor Documentation

G4LinLogInterpolation::G4LinLogInterpolation (  ) 

Definition at line 40 of file G4LinLogInterpolation.cc.

00041 { }

G4LinLogInterpolation::~G4LinLogInterpolation (  ) 

Definition at line 46 of file G4LinLogInterpolation.cc.

00047 { }


Member Function Documentation

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 76 of file G4LinLogInterpolation.cc.

00081 {
00082   //G4cout << "G4LinLogInterpolation is performed on dataset (4 arguments) " << G4endl;
00083   G4int nBins = data.size() - 1;
00084   G4double value = 0.;
00085   //G4double log_x = std::log10(x);
00086   if (x < points[0])
00087     {
00088       value = 0.;
00089     }
00090   else if (bin < nBins)
00091     {
00092       G4double e1 = points[bin];
00093       G4double e2 = points[bin+1];
00094       G4double d1 = data[bin];
00095       G4double d2 = data[bin+1];
00096       //G4double log_e1 = log_points[bin];
00097       //G4double log_e2 = log_points[bin+1];
00098       G4double log_d1 = log_data[bin];
00099       G4double log_d2 = log_data[bin+1];
00100       if (d1 > 0.0 && d2 > 0.0)
00101         {
00102 // Values e1, e2, d1 and d2 are the log values of the corresponding
00103 // original energy and data values. Simple linear interpolation performed
00104 // on loagarithmic data should be equivalent to log-log interpolation
00105           //value = log_d1 + (log_d2 - log_d1)*(log_x - log_e1)/(log_e2 - log_e1);
00106           value = std::exp(log_d1 + (log_d2 - log_d1)*(x - e1)/(e2 - e1));
00107         }
00108       else
00109         {
00110           if (d1 == 0.0) log_d1 = -300;
00111           if (d2 == 0.0) log_d2 = -300;
00112           value = std::exp(log_d1 + (log_d2 - log_d1)*(x - e1)/(e2 - e1));
00113         }
00114    }
00115  else
00116    {
00117      value = data[nBins];
00118    }
00119   return value;
00120 }

G4double G4LinLogInterpolation::Calculate ( G4double  point,
G4int  bin,
const G4DataVector energies,
const G4DataVector data 
) const [virtual]

Implements G4VDataSetAlgorithm.

Definition at line 50 of file G4LinLogInterpolation.cc.

00053 {
00054   //G4cout << "G4LinLogInterpolation is performed on dataset (2 arguments) " << G4endl;
00055   G4int nBins = data.size() - 1;
00056   G4double value = 0.;
00057   if (x < points[0])
00058     {
00059       value = 0.;
00060     }
00061   else if (bin < nBins)
00062     {
00063       G4double e1 = points[bin];
00064       G4double e2 = points[bin+1];
00065       G4double d1 = std::log(data[bin]);
00066       G4double d2 = std::log(data[bin+1]);
00067       value = std::exp(d1 + (d2 - d1)*(x - e1)/ (e2 - e1));
00068     }
00069   else
00070     {
00071       value = data[nBins];
00072     }
00073   return value;
00074 }

virtual G4VDataSetAlgorithm* G4LinLogInterpolation::Clone (  )  const [inline, virtual]

Implements G4VDataSetAlgorithm.

Definition at line 68 of file G4LinLogInterpolation.hh.

00068 { return new G4LinLogInterpolation; }


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