[819] | 1 | // |
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| 2 | // ******************************************************************** |
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| 3 | // * License and Disclaimer * |
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| 4 | // * * |
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| 5 | // * The Geant4 software is copyright of the Copyright Holders of * |
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| 6 | // * the Geant4 Collaboration. It is provided under the terms and * |
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| 7 | // * conditions of the Geant4 Software License, included in the file * |
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| 8 | // * LICENSE and available at http://cern.ch/geant4/license . These * |
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| 9 | // * include a list of copyright holders. * |
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| 10 | // * * |
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| 11 | // * Neither the authors of this software system, nor their employing * |
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| 12 | // * institutes,nor the agencies providing financial support for this * |
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| 13 | // * work make any representation or warranty, express or implied, * |
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| 14 | // * regarding this software system or assume any liability for its * |
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| 15 | // * use. Please see the license in the file LICENSE and URL above * |
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| 16 | // * for the full disclaimer and the limitation of liability. * |
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| 17 | // * * |
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| 18 | // * This code implementation is the result of the scientific and * |
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| 19 | // * technical work of the GEANT4 collaboration. * |
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| 20 | // * By using, copying, modifying or distributing the software (or * |
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| 21 | // * any work based on the software) you agree to acknowledge its * |
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| 22 | // * use in resulting scientific publications, and indicate your * |
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| 23 | // * acceptance of all terms of the Geant4 Software license. * |
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| 24 | // ******************************************************************** |
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| 25 | // |
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| 26 | // |
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| 27 | // $Id: G4NeutronHPInterpolator.hh,v 1.19 2006/06/29 20:48:13 gunter Exp $ |
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| 28 | // GEANT4 tag $Name: $ |
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| 29 | // |
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| 30 | #ifndef G4NeutronHPInterpolator_h |
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| 31 | #define G4NeutronHPInterpolator_h 1 |
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| 32 | |
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| 33 | #include "globals.hh" |
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| 34 | #include "G4InterpolationScheme.hh" |
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| 35 | #include "Randomize.hh" |
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| 36 | #include "G4ios.hh" |
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| 37 | #include "G4HadronicException.hh" |
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| 38 | |
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| 39 | |
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| 40 | class G4NeutronHPInterpolator |
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| 41 | { |
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| 42 | public: |
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| 43 | |
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| 44 | G4NeutronHPInterpolator(){} |
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| 45 | ~G4NeutronHPInterpolator() |
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| 46 | { |
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| 47 | // G4cout <<"deleted the interpolator"<<G4endl; |
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| 48 | } |
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| 49 | |
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| 50 | inline G4double Lin(G4double x,G4double x1,G4double x2,G4double y1,G4double y2) |
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| 51 | { |
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| 52 | G4double slope=0, off=0; |
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| 53 | if(x2-x1==0) return (y2+y1)/2.; |
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| 54 | slope = (y2-y1)/(x2-x1); |
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| 55 | off = y2-x2*slope; |
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| 56 | G4double y = x*slope+off; |
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| 57 | return y; |
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| 58 | } |
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| 59 | |
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| 60 | inline G4double Interpolate(G4InterpolationScheme aScheme, |
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| 61 | G4double x, G4double x1, G4double x2, |
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| 62 | G4double y1, G4double y2) const; |
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| 63 | |
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| 64 | G4double |
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| 65 | GetBinIntegral(const G4InterpolationScheme & aScheme, |
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| 66 | const G4double x1,const G4double x2,const G4double y1,const G4double y2); |
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| 67 | |
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| 68 | G4double |
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| 69 | GetWeightedBinIntegral(const G4InterpolationScheme & aScheme, |
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| 70 | const G4double x1,const G4double x2,const G4double y1,const G4double y2); |
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| 71 | |
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| 72 | private: |
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| 73 | |
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| 74 | inline G4double Histogram(G4double x, G4double x1, G4double x2, G4double y1, G4double y2) const; |
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| 75 | inline G4double LinearLinear(G4double x, G4double x1, G4double x2, G4double y1, G4double y2) const; |
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| 76 | inline G4double LinearLogarithmic(G4double x, G4double x1, G4double x2, G4double y1, G4double y2) const; |
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| 77 | inline G4double LogarithmicLinear(G4double x, G4double x1, G4double x2, G4double y1, G4double y2) const; |
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| 78 | inline G4double LogarithmicLogarithmic(G4double x, G4double x1, G4double x2, G4double y1, G4double y2) const; |
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| 79 | inline G4double Random(G4double x, G4double x1, G4double x2, G4double y1, G4double y2) const; |
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| 80 | |
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| 81 | }; |
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| 82 | |
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| 83 | inline G4double G4NeutronHPInterpolator:: |
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| 84 | Interpolate(G4InterpolationScheme aScheme, |
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| 85 | G4double x, G4double x1, G4double x2, G4double y1, G4double y2) const |
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| 86 | { |
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| 87 | G4double result(0); |
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| 88 | G4int theScheme = aScheme; |
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| 89 | theScheme = theScheme%CSTART_; |
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| 90 | switch(theScheme) |
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| 91 | { |
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| 92 | case 1: |
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| 93 | result = Histogram(x, x1, x2, y1, y2); |
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| 94 | break; |
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| 95 | case 2: |
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| 96 | result = LinearLinear(x, x1, x2, y1, y2); |
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| 97 | break; |
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| 98 | case 3: |
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| 99 | result = LinearLogarithmic(x, x1, x2, y1, y2); |
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| 100 | break; |
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| 101 | case 4: |
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| 102 | result = LogarithmicLinear(x, x1, x2, y1, y2); |
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| 103 | break; |
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| 104 | case 5: |
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| 105 | result = LogarithmicLogarithmic(x, x1, x2, y1, y2); |
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| 106 | break; |
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| 107 | case 6: |
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| 108 | result = Random(x, x1, x2, y1, y2); |
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| 109 | break; |
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| 110 | default: |
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| 111 | G4cout << "theScheme = "<<theScheme<<G4endl; |
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| 112 | throw G4HadronicException(__FILE__, __LINE__, "G4NeutronHPInterpolator::Carthesian Invalid InterpolationScheme"); |
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| 113 | break; |
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| 114 | } |
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| 115 | return result; |
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| 116 | } |
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| 117 | |
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| 118 | inline G4double G4NeutronHPInterpolator:: |
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| 119 | Histogram(G4double , G4double , G4double , G4double y1, G4double ) const |
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| 120 | { |
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| 121 | G4double result; |
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| 122 | result = y1; |
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| 123 | return result; |
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| 124 | } |
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| 125 | |
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| 126 | inline G4double G4NeutronHPInterpolator:: |
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| 127 | LinearLinear(G4double x, G4double x1, G4double x2, G4double y1, G4double y2) const |
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| 128 | { |
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| 129 | G4double slope=0, off=0; |
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| 130 | if(x2-x1==0) return (y2+y1)/2.; |
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| 131 | slope = (y2-y1)/(x2-x1); |
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| 132 | off = y2-x2*slope; |
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| 133 | G4double y = x*slope+off; |
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| 134 | return y; |
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| 135 | } |
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| 136 | |
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| 137 | inline G4double G4NeutronHPInterpolator:: |
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| 138 | LinearLogarithmic(G4double x, G4double x1, G4double x2, G4double y1, G4double y2) const |
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| 139 | { |
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| 140 | G4double result; |
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| 141 | if(x==0) result = y1+y2/2.; |
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| 142 | else if(x1==0) result = y1; |
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| 143 | else if(x2==0) result = y2; |
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| 144 | else result = LinearLinear(std::log(x), std::log(x1), std::log(x2), y1, y2); |
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| 145 | return result; |
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| 146 | } |
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| 147 | |
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| 148 | inline G4double G4NeutronHPInterpolator:: |
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| 149 | LogarithmicLinear(G4double x, G4double x1, G4double x2, G4double y1, G4double y2) const |
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| 150 | { |
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| 151 | G4double result; |
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| 152 | if(y1==0||y2==0) result = 0; |
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| 153 | else |
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| 154 | { |
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| 155 | result = LinearLinear(x, x1, x2, std::log(y1), std::log(y2)); |
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| 156 | result = std::exp(result); |
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| 157 | } |
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| 158 | return result; |
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| 159 | } |
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| 160 | |
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| 161 | inline G4double G4NeutronHPInterpolator:: |
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| 162 | LogarithmicLogarithmic(G4double x, G4double x1, G4double x2, G4double y1, G4double y2) const |
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| 163 | { |
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| 164 | G4double result; |
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| 165 | if(x==0) result = y1+y2/2.; |
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| 166 | else if(x1==0) result = y1; |
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| 167 | else if(x2==0) result = y2; |
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| 168 | if(y1==0||y2==0) result = 0; |
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| 169 | else |
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| 170 | { |
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| 171 | result = LinearLinear(std::log(x), std::log(x1), std::log(x2), std::log(y1), std::log(y2)); |
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| 172 | result = std::exp(result); |
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| 173 | } |
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| 174 | return result; |
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| 175 | } |
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| 176 | |
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| 177 | inline G4double G4NeutronHPInterpolator:: |
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| 178 | Random(G4double , G4double , G4double , G4double y1, G4double y2) const |
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| 179 | { |
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| 180 | G4double result; |
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| 181 | result = y1+G4UniformRand()*(y2-y1); |
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| 182 | return result; |
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| 183 | } |
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| 184 | |
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| 185 | #endif |
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