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Geant4/processes/electromagnetic/lowenergy/src/G4LinLogLogInterpolation.cc

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Differences between /processes/electromagnetic/lowenergy/src/G4LinLogLogInterpolation.cc (Version 11.3.0) and /processes/electromagnetic/lowenergy/src/G4LinLogLogInterpolation.cc (Version 10.2.p3)


  1 //                                                  1 //
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 18 // * This  code  implementation is the result      18 // * This  code  implementation is the result of  the  scientific and *
 19 // * technical work of the GEANT4 collaboratio     19 // * technical work of the GEANT4 collaboration.                      *
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 24 // *******************************************     24 // ********************************************************************
 25 //                                                 25 //
 26 //                                                 26 //
 27 // Author:  Vladimir Ivanchenko (Vladimir.Ivan     27 // Author:  Vladimir Ivanchenko (Vladimir.Ivantchenko@cern.ch)
 28 //                                                 28 //
 29 // History:                                        29 // History:
 30 // -----------                                     30 // -----------
 31 // 29 May 2002   VI        Created                 31 // 29 May 2002   VI        Created
 32 //                                                 32 //
 33 // -------------------------------------------     33 // -------------------------------------------------------------------
 34                                                    34 
 35 #include "G4LinLogLogInterpolation.hh"             35 #include "G4LinLogLogInterpolation.hh"
 36                                                    36 
 37 // Constructor                                     37 // Constructor
 38                                                    38 
 39 G4LinLogLogInterpolation::G4LinLogLogInterpola     39 G4LinLogLogInterpolation::G4LinLogLogInterpolation()
 40 { }                                                40 { }
 41                                                    41 
 42 // Destructor                                      42 // Destructor
 43                                                    43 
 44 G4LinLogLogInterpolation::~G4LinLogLogInterpol     44 G4LinLogLogInterpolation::~G4LinLogLogInterpolation()
 45 { }                                                45 { }
 46                                                    46 
 47 G4VDataSetAlgorithm* G4LinLogLogInterpolation:     47 G4VDataSetAlgorithm* G4LinLogLogInterpolation::Clone() const 
 48 { return new G4LinLogLogInterpolation; }           48 { return new G4LinLogLogInterpolation; }
 49                                                    49 
 50                                                    50 
 51 G4double G4LinLogLogInterpolation::Calculate(G     51 G4double G4LinLogLogInterpolation::Calculate(G4double x, G4int bin, 
 52             const G4DataVector& points,            52             const G4DataVector& points, 
 53             const G4DataVector& data) const        53             const G4DataVector& data) const
 54 {                                                  54 {
 55   //G4cout << "G4LinLogLogInterpolation is per     55   //G4cout << "G4LinLogLogInterpolation is performed (2 arguments) " << G4endl;
 56   G4int nBins = G4int(data.size() - 1);        <<  56   G4int nBins = data.size() - 1;
 57   G4double value = 0.;                             57   G4double value = 0.;
 58   if (x < points[0])                               58   if (x < points[0])
 59     {                                              59     {
 60       value = 0.;                                  60       value = 0.;
 61     }                                              61     }
 62   else if (bin < nBins)                            62   else if (bin < nBins)
 63     {                                              63     {
 64       G4double e1 = points[bin];                   64       G4double e1 = points[bin];
 65       G4double e2 = points[bin+1];                 65       G4double e2 = points[bin+1];
 66       G4double d1 = data[bin];                     66       G4double d1 = data[bin];
 67       G4double d2 = data[bin+1];                   67       G4double d2 = data[bin+1];
 68       if(d1 > 0.0 && d2 > 0.0) {                   68       if(d1 > 0.0 && d2 > 0.0) {
 69         value = (std::log10(d1)*std::log10(e2/     69         value = (std::log10(d1)*std::log10(e2/x) + std::log10(d2)*std::log10(x/e1)) / std::log10(e2/e1);
 70         value = std::pow(10.,value);               70         value = std::pow(10.,value);
 71       } else {                                     71       } else {
 72         value = (d1*std::log10(e2/x) + d2*std:     72         value = (d1*std::log10(e2/x) + d2*std::log10(x/e1)) / std::log10(e2/e1);
 73       }                                            73       }
 74     }                                              74     }
 75   else                                             75   else
 76     {                                              76     {
 77       value = data[nBins];                         77       value = data[nBins];
 78     }                                              78     }
 79                                                    79 
 80   return value;                                    80   return value;
 81 }                                                  81 }
 82                                                    82 
 83 G4double G4LinLogLogInterpolation::Calculate(G     83 G4double G4LinLogLogInterpolation::Calculate(G4double x, G4int bin, 
 84             const G4DataVector& points,            84             const G4DataVector& points,
 85                                           cons     85                                           const G4DataVector& data,
 86                                           cons     86                                           const G4DataVector& log_points, 
 87             const G4DataVector& log_data) cons     87             const G4DataVector& log_data) const
 88 {                                                  88 {
 89   //G4cout << "G4LinLogLogInterpolation is per     89   //G4cout << "G4LinLogLogInterpolation is performed(4 arguments)  " << G4endl;
 90   G4int nBins = G4int(data.size() - 1);        <<  90   G4int nBins = data.size() - 1;
 91   G4double value = 0.;                             91   G4double value = 0.;
 92   G4double log_x = std::log10(x);                  92   G4double log_x = std::log10(x);
 93   if (x < points[0])                               93   if (x < points[0])
 94     {                                              94     {
 95       value = 0.;                                  95       value = 0.;
 96     }                                              96     }
 97   else if (bin < nBins)                            97   else if (bin < nBins)
 98     {                                              98     {
 99       G4double e1 = points[bin];                   99       G4double e1 = points[bin];
100       G4double e2 = points[bin+1];                100       G4double e2 = points[bin+1];
101       G4double d1 = data[bin];                    101       G4double d1 = data[bin];
102       G4double d2 = data[bin+1];                  102       G4double d2 = data[bin+1];      
103       G4double log_e1 = log_points[bin];          103       G4double log_e1 = log_points[bin];
104       G4double log_e2 = log_points[bin+1];        104       G4double log_e2 = log_points[bin+1];
105       G4double log_d1 = log_data[bin];            105       G4double log_d1 = log_data[bin];
106       G4double log_d2 = log_data[bin+1];          106       G4double log_d2 = log_data[bin+1];
107       //G4cout << "x = " << x << " , log_x = "    107       //G4cout << "x = " << x << " , log_x = " << log_x << " , bin = " << bin << G4endl;
108       //G4cout << "e1 = " << e1 << " , d1 = "     108       //G4cout << "e1 = " << e1 << " , d1 = " << d1 << G4endl;
109       //G4cout << "e2 = " << e2 << " , d2 = "     109       //G4cout << "e2 = " << e2 << " , d2 = " << d2 << G4endl;
110       //G4cout << "log_e1 = " << log_e1 << " ,    110       //G4cout << "log_e1 = " << log_e1 << " , log_d1 = " << log_d1 << G4endl;
111       //G4cout << "log_e2 = " << log_e2 << " ,    111       //G4cout << "log_e2 = " << log_e2 << " , log_d2 = " << log_d2 <<G4endl;
112       if (d1 > 0.0 && d2 > 0.0)                   112       if (d1 > 0.0 && d2 > 0.0)
113        {                                          113        {
114          // Values e1, e2, d1 and d2 are the l    114          // Values e1, e2, d1 and d2 are the log values of the corresponding
115          // original energy and data values. S    115          // original energy and data values. Simple linear interpolation performed
116          // on loagarithmic data should be equ    116          // on loagarithmic data should be equivalent to log-log interpolation
117          value = log_d1 + (log_d2 - log_d1)*(l    117          value = log_d1 + (log_d2 - log_d1)*(log_x - log_e1)/(log_e2 - log_e1);
118                                                   118 
119          //G4cout << "Case of normal log-log i    119          //G4cout << "Case of normal log-log interpolation" << G4endl;
120          //G4cout << "Temp log interpolated va    120          //G4cout << "Temp log interpolated value: log_value = " << value << G4endl;
121                                                   121 
122          // Delogarithmize to obtain interpola    122          // Delogarithmize to obtain interpolated value
123          value = std::pow(10.,value);             123          value = std::pow(10.,value);
124                                                   124 
125          //G4cout << "Final Interpolated value    125          //G4cout << "Final Interpolated value: " << value << G4endl << G4endl;
126        }                                          126        }
127      else                                         127      else
128        {                                          128        {
129         // Case of semi log-log interpolation     129         // Case of semi log-log interpolation
130         //G4cout << "G4LinLogLogInterpolation     130         //G4cout << "G4LinLogLogInterpolation - Case of SemiLogInterpolation" << G4endl;
131         if (e1 == 0.0) e1 = 1e-300;               131         if (e1 == 0.0) e1 = 1e-300;
132         if (e2 == 0.0) e2 = 1e-300;               132         if (e2 == 0.0) e2 = 1e-300;
133         value = d1 + (d2 - d1)*(log_x - log_e1    133         value = d1 + (d2 - d1)*(log_x - log_e1)/(log_e2 - log_e1);
134         //G4cout << "LinLogInterpolation: Fina    134         //G4cout << "LinLogInterpolation: Final Interpolated value: " << value << G4endl << G4endl;
135        }                                          135        }
136     }                                             136     }
137   else                                            137   else
138     {                                             138     {
139       value = data[nBins];                        139       value = data[nBins];
140     }                                             140     }
141   return value;                                   141   return value;
142 }                                                 142 }
143                                                   143