| 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: G4NeutronHPFastLegendre.hh,v 1.11 2006/06/29 20:47:39 gunter Exp $ |
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| 28 | // GEANT4 tag $Name: geant4-09-03-ref-09 $ |
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| 29 | // |
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| 30 | #ifndef G4NeutronHPFastLegendre_h |
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| 31 | #define G4NeutronHPFastLegendre_h 1 |
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| 32 | |
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| 33 | #include "globals.hh" |
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| 34 | |
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| 35 | class G4NeutronHPFastLegendre |
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| 36 | { |
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| 37 | public: |
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| 38 | |
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| 39 | G4NeutronHPFastLegendre() |
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| 40 | { |
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| 41 | value = new G4double * [31]; |
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| 42 | value[0] = l0; |
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| 43 | value[1] = l1; |
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| 44 | value[2] = l2; |
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| 45 | value[3] = l3; |
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| 46 | value[4] = l4; |
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| 47 | value[5] = l5; |
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| 48 | value[6] = l6; |
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| 49 | value[7] = l7; |
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| 50 | value[8] = l8; |
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| 51 | value[9] = l9; |
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| 52 | value[10] = l10; |
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| 53 | value[11] = l11; |
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| 54 | value[12] = l12; |
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| 55 | value[13] = l13; |
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| 56 | value[14] = l14; |
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| 57 | value[15] = l15; |
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| 58 | value[16] = l16; |
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| 59 | value[17] = l17; |
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| 60 | value[18] = l18; |
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| 61 | value[19] = l19; |
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| 62 | value[20] = l20; |
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| 63 | value[21] = l21; |
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| 64 | value[22] = l22; |
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| 65 | value[23] = l23; |
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| 66 | value[24] = l24; |
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| 67 | value[25] = l25; |
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| 68 | value[26] = l26; |
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| 69 | value[27] = l27; |
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| 70 | value[28] = l28; |
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| 71 | value[29] = l29; |
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| 72 | value[30] = l30; |
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| 73 | integral = new G4double * [31]; |
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| 74 | integral[0] = i0; |
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| 75 | integral[1] = i1; |
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| 76 | integral[2] = i2; |
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| 77 | integral[3] = i3; |
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| 78 | integral[4] = i4; |
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| 79 | integral[5] = i5; |
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| 80 | integral[6] = i6; |
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| 81 | integral[7] = i7; |
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| 82 | integral[8] = i8; |
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| 83 | integral[9] = i9; |
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| 84 | integral[10] = i10; |
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| 85 | integral[11] = i11; |
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| 86 | integral[12] = i12; |
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| 87 | integral[13] = i13; |
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| 88 | integral[14] = i14; |
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| 89 | integral[15] = i15; |
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| 90 | integral[16] = i16; |
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| 91 | integral[17] = i17; |
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| 92 | integral[18] = i18; |
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| 93 | integral[19] = i19; |
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| 94 | integral[20] = i20; |
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| 95 | integral[21] = i21; |
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| 96 | integral[22] = i22; |
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| 97 | integral[23] = i23; |
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| 98 | integral[24] = i24; |
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| 99 | integral[25] = i25; |
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| 100 | integral[26] = i26; |
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| 101 | integral[27] = i27; |
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| 102 | integral[28] = i28; |
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| 103 | integral[29] = i29; |
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| 104 | integral[30] = i30; |
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| 105 | |
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| 106 | G4int i; |
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| 107 | for(i=0;i<31;i++) theNbin[i]=1+200*(i+1); |
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| 108 | } |
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| 109 | |
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| 110 | ~G4NeutronHPFastLegendre() |
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| 111 | { |
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| 112 | delete [] value; |
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| 113 | delete [] integral; |
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| 114 | } |
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| 115 | |
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| 116 | G4double Integrate(G4int l, G4double costh) |
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| 117 | { |
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| 118 | G4int bin = GetBin(l, costh); |
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| 119 | G4double y1, y2; |
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| 120 | // G4cout <<"Testhpw G4NeutronHPFastLegendre::Integrate "<<l<<" "<<bin<<G4endl; |
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| 121 | y1 = integral[l][bin]; |
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| 122 | y2 = integral[l][bin+1]; |
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| 123 | // G4cout <<"Testhpw G4NeutronHPFastLegendre::Integrate exit"<<G4endl; |
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| 124 | return Interpolate(bin, l, y1, y2, costh); |
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| 125 | } |
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| 126 | |
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| 127 | inline G4double Evaluate(G4int l, G4double costh) |
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| 128 | { |
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| 129 | G4double result; |
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| 130 | G4int bin = GetBin(l, costh); |
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| 131 | if(bin != theNbin[l]-1) |
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| 132 | { |
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| 133 | G4double y1, y2; |
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| 134 | y1 = value[l][bin]; |
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| 135 | y2 = value[l][bin+1]; |
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| 136 | result = Interpolate(bin, l, y1, y2, costh); |
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| 137 | } |
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| 138 | else |
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| 139 | { |
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| 140 | result = value[l][bin]; |
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| 141 | } |
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| 142 | return result; |
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| 143 | } |
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| 144 | private: |
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| 145 | |
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| 146 | inline G4int GetBin(G4int l, G4double costh) |
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| 147 | { |
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| 148 | G4int bin=0; |
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| 149 | bin = G4int( (theNbin[l]-1)*(costh+1)/2. ); |
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| 150 | if(bin == theNbin[l]-1) bin--; |
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| 151 | return bin; |
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| 152 | } |
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| 153 | |
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| 154 | inline G4double Interpolate(G4int bin, G4int l, G4double y1, G4double y2, G4double x) |
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| 155 | { |
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| 156 | G4double slope = 0, off = 0, x2=0, x1mx2; |
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| 157 | G4int half = (theNbin[l]-1)/2; |
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| 158 | // x1 = (bin-half)/G4double(half); |
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| 159 | x2 = (bin+1-half)/G4double(half); |
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| 160 | x1mx2 = 1./G4double( (theNbin[l]-1)/2 ); |
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| 161 | // slope = (y2-y1)/(x2-x1); |
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| 162 | slope = (y2-y1)/x1mx2; |
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| 163 | off = y2-x2*slope; |
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| 164 | return x*slope+off; |
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| 165 | } |
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| 166 | |
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| 167 | G4double ** value; |
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| 168 | G4double ** integral; |
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| 169 | G4int theNbin[31]; |
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| 170 | static G4double l0[201]; |
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| 171 | static G4double i0[201]; |
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| 172 | static G4double l1[401]; |
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| 173 | static G4double i1[401]; |
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| 174 | static G4double l2[601]; |
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| 175 | static G4double i2[601]; |
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| 176 | static G4double l3[801]; |
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| 177 | static G4double i3[801]; |
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| 178 | static G4double l4[1001]; |
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| 179 | static G4double i4[1001]; |
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| 180 | static G4double l5[1201]; |
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| 181 | static G4double i5[1201]; |
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| 182 | static G4double l6[1401]; |
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| 183 | static G4double i6[1401]; |
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| 184 | static G4double l7[1601]; |
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| 185 | static G4double i7[1601]; |
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| 186 | static G4double l8[1801]; |
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| 187 | static G4double i8[1801]; |
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| 188 | static G4double l9[2001]; |
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| 189 | static G4double i9[2001]; |
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| 190 | static G4double l10[2201]; |
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| 191 | static G4double i10[2201]; |
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| 192 | static G4double l11[2401]; |
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| 193 | static G4double i11[2401]; |
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| 194 | static G4double l12[2601]; |
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| 195 | static G4double i12[2601]; |
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| 196 | static G4double l13[2801]; |
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| 197 | static G4double i13[2801]; |
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| 198 | static G4double l14[3001]; |
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| 199 | static G4double i14[3001]; |
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| 200 | static G4double l15[3201]; |
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| 201 | static G4double i15[3201]; |
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| 202 | static G4double l16[3401]; |
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| 203 | static G4double i16[3401]; |
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| 204 | static G4double l17[3601]; |
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| 205 | static G4double i17[3601]; |
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| 206 | static G4double l18[3801]; |
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| 207 | static G4double i18[3801]; |
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| 208 | static G4double l19[4001]; |
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| 209 | static G4double i19[4001]; |
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| 210 | static G4double l20[4201]; |
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| 211 | static G4double i20[4201]; |
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| 212 | static G4double l21[4401]; |
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| 213 | static G4double i21[4401]; |
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| 214 | static G4double l22[4601]; |
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| 215 | static G4double i22[4601]; |
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| 216 | static G4double l23[4801]; |
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| 217 | static G4double i23[4801]; |
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| 218 | static G4double l24[5001]; |
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| 219 | static G4double i24[5001]; |
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| 220 | static G4double l25[5201]; |
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| 221 | static G4double i25[5201]; |
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| 222 | static G4double l26[5401]; |
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| 223 | static G4double i26[5401]; |
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| 224 | static G4double l27[5601]; |
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| 225 | static G4double i27[5601]; |
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| 226 | static G4double l28[5801]; |
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| 227 | static G4double i28[5801]; |
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| 228 | static G4double l29[6001]; |
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| 229 | static G4double i29[6001]; |
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| 230 | static G4double l30[6201]; |
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| 231 | static G4double i30[6201]; |
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| 232 | }; |
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| 233 | #endif |
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