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Geant4/processes/electromagnetic/lowenergy/src/G4SemiLogInterpolation.cc

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Diff markup

Differences between /processes/electromagnetic/lowenergy/src/G4SemiLogInterpolation.cc (Version 11.3.0) and /processes/electromagnetic/lowenergy/src/G4SemiLogInterpolation.cc (Version 6.1)


  1 //                                                  1 //
  2 // *******************************************      2 // ********************************************************************
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 15 // * use.  Please see the license in the file  <<  14 // * use.                                                             *
 16 // * for the full disclaimer and the limitatio << 
 17 // *                                               15 // *                                                                  *
 18 // * This  code  implementation is the result  <<  16 // * This  code  implementation is the  intellectual property  of the *
 19 // * technical work of the GEANT4 collaboratio <<  17 // * GEANT4 collaboration.                                            *
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 25 //                                                 22 //
 26 //                                                 23 //
                                                   >>  24 // $Id: G4SemiLogInterpolation.cc,v 1.4 2002/05/28 09:20:21 pia Exp $
                                                   >>  25 // GEANT4 tag $Name: geant4-05-02-patch-01 $
 27 //                                                 26 //
 28 // Author: Maria Grazia Pia (Maria.Grazia.Pia@     27 // Author: Maria Grazia Pia (Maria.Grazia.Pia@cern.ch)
 29 //                                                 28 //
 30 // History:                                        29 // History:
 31 // -----------                                     30 // -----------
 32 // 31 Jul 2001   MGP        Created                31 // 31 Jul 2001   MGP        Created
 33 //                                                 32 //
 34 // -------------------------------------------     33 // -------------------------------------------------------------------
 35                                                    34 
 36 #include "G4SemiLogInterpolation.hh"               35 #include "G4SemiLogInterpolation.hh"
 37                                                    36 
 38 //....oooOO0OOooo........oooOO0OOooo........oo << 
 39 // Constructor                                     37 // Constructor
                                                   >>  38 
 40 G4SemiLogInterpolation::G4SemiLogInterpolation     39 G4SemiLogInterpolation::G4SemiLogInterpolation()
 41 { }                                                40 { }
 42                                                    41 
 43                                                    42 
 44 //....oooOO0OOooo........oooOO0OOooo........oo << 
 45 // Destructor                                      43 // Destructor
                                                   >>  44 
 46 G4SemiLogInterpolation::~G4SemiLogInterpolatio     45 G4SemiLogInterpolation::~G4SemiLogInterpolation()
 47 { }                                                46 { }
 48                                                    47 
 49 //....oooOO0OOooo........oooOO0OOooo........oo << 
 50 G4VDataSetAlgorithm* G4SemiLogInterpolation::C     48 G4VDataSetAlgorithm* G4SemiLogInterpolation::Clone() const 
 51 { return new G4SemiLogInterpolation; }             49 { return new G4SemiLogInterpolation; }
 52                                                    50 
 53 //....oooOO0OOooo........oooOO0OOooo........oo <<  51 
 54 G4double G4SemiLogInterpolation::Calculate(G4d     52 G4double G4SemiLogInterpolation::Calculate(G4double x, G4int bin, 
 55             const G4DataVector& points,            53             const G4DataVector& points, 
 56             const G4DataVector& data) const        54             const G4DataVector& data) const
 57 {                                                  55 {
 58   G4int nBins = G4int(data.size() - 1);        <<  56   G4int nBins = data.size() - 1;
 59   G4double value = 0.;                             57   G4double value = 0.;
 60   if (x < points[0])                               58   if (x < points[0])
 61     {                                              59     {
 62       value = 0.;                                  60       value = 0.;
 63     }                                              61     }
 64   else if (bin < nBins)                            62   else if (bin < nBins)
 65     {                                              63     {
 66       G4double e1 = points[bin];                   64       G4double e1 = points[bin];
 67       G4double e2 = points[bin+1];                 65       G4double e2 = points[bin+1];
 68       G4double d1 = data[bin];                     66       G4double d1 = data[bin];
 69       G4double d2 = data[bin+1];                   67       G4double d2 = data[bin+1];
 70       value = (d1*std::log10(e2/x) + d2*std::l <<  68       value = (d1*log10(e2/x) + d2*log10(x/e1)) / log10(e2/e1);
 71     }                                              69     }
 72   else                                             70   else
 73     {                                              71     {
 74       value = data[nBins];                         72       value = data[nBins];
 75     }                                              73     }
 76   return value;                                    74   return value;
 77 }                                                  75 }
 78                                                << 
 79 //....oooOO0OOooo........oooOO0OOooo........oo << 
 80 G4double G4SemiLogInterpolation::Calculate(G4d << 
 81                    const G4DataVector& points, << 
 82                                            con << 
 83                                            con << 
 84                    const G4DataVector& /*log_d << 
 85 {                                              << 
 86   //A combination of logarithmic interpolation << 
 87   //linear Interpolation on data set           << 
 88   //G4cout << "G4SemiLogInterpolation is perfo << 
 89   G4int nBins = G4int(data.size() - 1);        << 
 90   G4double value = 0.;                         << 
 91   G4double log_x = std::log10(x);              << 
 92   if (x < points[0])                           << 
 93     {                                          << 
 94       value = 0.;                              << 
 95     }                                          << 
 96   else if (bin < nBins)                        << 
 97     {                                          << 
 98       G4double e1 = points[bin];               << 
 99       G4double e2 = points[bin+1];             << 
100       G4double d1 = data[bin];                 << 
101       G4double d2 = data[bin+1];               << 
102       G4double log_e1 = log_points[bin];       << 
103       G4double log_e2 = log_points[bin+1];     << 
104                                                << 
105       // Values log_e1 and log_e2 are the log  << 
106       // original energy actual values. Origin << 
107       // Simple linear interpolation performed << 
108       // should be equivalent to semi log-log  << 
109       if (e1 == 0.0) log_e1 = -300;            << 
110       if (e2 == 0.0) log_e2 = -300;            << 
111       value = d1 + (d2 - d1)*(log_x - log_e1)/ << 
112    }                                           << 
113  else                                          << 
114    {                                           << 
115      value = data[nBins];                      << 
116    }                                           << 
117   return value;                                << 
118 }                                              << 
119                                                << 
120                                                    76