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25 // 25 //
26 // INCL++ intra-nuclear cascade model 26 // INCL++ intra-nuclear cascade model
27 // Alain Boudard, CEA-Saclay, France << 27 // Pekka Kaitaniemi, CEA and Helsinki Institute of Physics
28 // Joseph Cugnon, University of Liege, Belgium << 28 // Davide Mancusi, CEA
29 // Jean-Christophe David, CEA-Saclay, France << 29 // Alain Boudard, CEA
30 // Pekka Kaitaniemi, CEA-Saclay, France, and H << 30 // Sylvie Leray, CEA
31 // Sylvie Leray, CEA-Saclay, France << 31 // Joseph Cugnon, University of Liege
32 // Davide Mancusi, CEA-Saclay, France <<
33 // 32 //
34 #define INCLXX_IN_GEANT4_MODE 1 33 #define INCLXX_IN_GEANT4_MODE 1
35 34
36 #include "globals.hh" 35 #include "globals.hh"
37 36
38 /** \file G4INCLIFunction1D.cc 37 /** \file G4INCLIFunction1D.cc
39 * \brief Functor for 1-dimensional mathematic 38 * \brief Functor for 1-dimensional mathematical functions
40 * 39 *
41 * \date 16 July 2011 40 * \date 16 July 2011
42 * \author Davide Mancusi 41 * \author Davide Mancusi
43 */ 42 */
44 43
45 #include <algorithm> 44 #include <algorithm>
46 #include <cmath> 45 #include <cmath>
47 #include <cstdlib> 46 #include <cstdlib>
48 #include "G4INCLIFunction1D.hh" 47 #include "G4INCLIFunction1D.hh"
49 #include "G4INCLLogger.hh" 48 #include "G4INCLLogger.hh"
50 #include "G4INCLInvFInterpolationTable.hh" << 49 #include "G4INCLInverseInterpolationTable.hh"
51 50
52 namespace G4INCL { 51 namespace G4INCL {
53 52
54 const G4double IFunction1D::integrationCoeff 53 const G4double IFunction1D::integrationCoefficients[] = {
55 2.*95.0/288.0, 54 2.*95.0/288.0,
56 317.0/240.0, 55 317.0/240.0,
57 23.0/30.0, 56 23.0/30.0,
58 793.0/720.0, 57 793.0/720.0,
59 157.0/160.0, 58 157.0/160.0,
60 157.0/160.0, 59 157.0/160.0,
61 793.0/720.0, 60 793.0/720.0,
62 23.0/30.0, 61 23.0/30.0,
63 317.0/240.0, 62 317.0/240.0,
64 }; 63 };
65 64
66 G4double IFunction1D::integrate(const G4doub 65 G4double IFunction1D::integrate(const G4double x0, const G4double x1, const G4double step) const {
67 G4double xi = std::max(x0, xMin); 66 G4double xi = std::max(x0, xMin);
68 G4double xa = std::min(x1, xMax); 67 G4double xa = std::min(x1, xMax);
69 G4double sign; 68 G4double sign;
70 69
71 if(x1 <= x0) { 70 if(x1 <= x0) {
72 sign = -1.0; 71 sign = -1.0;
73 std::swap(xi, xa); 72 std::swap(xi, xa);
74 } else 73 } else
75 sign = 1.0; 74 sign = 1.0;
76 75
77 const G4double interval = xa - xi; 76 const G4double interval = xa - xi;
78 77
79 G4int nIntervals; 78 G4int nIntervals;
80 if(step<0.) { 79 if(step<0.) {
81 nIntervals = 45; 80 nIntervals = 45;
82 } else { 81 } else {
83 nIntervals = G4int(interval/step); 82 nIntervals = G4int(interval/step);
84 83
85 // Round up nIntervals to the closest mu 84 // Round up nIntervals to the closest multiple of 9
86 G4int remainder = nIntervals % 9; 85 G4int remainder = nIntervals % 9;
87 if (remainder != 0) 86 if (remainder != 0)
88 nIntervals += 9 - remainder; 87 nIntervals += 9 - remainder;
89 88
90 nIntervals = std::max(nIntervals, 9); 89 nIntervals = std::max(nIntervals, 9);
91 } 90 }
92 91
93 const G4double dx = interval/nIntervals; 92 const G4double dx = interval/nIntervals;
94 G4double result = (operator()(xi) + operat 93 G4double result = (operator()(xi) + operator()(xa)) * integrationCoefficients[0]/2;
95 for(G4int j = 1; j<nIntervals; ++j) { 94 for(G4int j = 1; j<nIntervals; ++j) {
96 const G4double x = xi + interval*G4doubl 95 const G4double x = xi + interval*G4double(j)/G4double(nIntervals);
97 const unsigned index = j%9; 96 const unsigned index = j%9;
98 result += operator()(x) * integrationCoe 97 result += operator()(x) * integrationCoefficients[index];
99 } 98 }
100 99
101 return result*dx*sign; 100 return result*dx*sign;
102 101
103 } 102 }
104 103
105 IFunction1D *IFunction1D::primitive() const 104 IFunction1D *IFunction1D::primitive() const {
106 class Primitive : public IFunction1D { 105 class Primitive : public IFunction1D {
107 public: 106 public:
108 Primitive(IFunction1D const * const f) 107 Primitive(IFunction1D const * const f) :
109 IFunction1D(f->getXMinimum(), f->get 108 IFunction1D(f->getXMinimum(), f->getXMaximum()),
110 theFunction(f) 109 theFunction(f)
111 {} 110 {}
112 111
113 G4double operator()(const G4double x) 112 G4double operator()(const G4double x) const {
114 return theFunction->integrate(xMin,x 113 return theFunction->integrate(xMin,x);
115 } 114 }
116 private: 115 private:
117 IFunction1D const * const theFunction; 116 IFunction1D const * const theFunction;
118 } *thePrimitive = new Primitive(this); 117 } *thePrimitive = new Primitive(this);
119 118
120 return thePrimitive; 119 return thePrimitive;
121 } 120 }
122 121
123 InterpolationTable *IFunction1D::inverseCDFT << 122 InverseInterpolationTable *IFunction1D::inverseCDFTable(const G4int nNodes) const {
124 class InverseCDF : public IFunction1D { 123 class InverseCDF : public IFunction1D {
125 public: 124 public:
126 InverseCDF(IFunction1D const * const f << 125 InverseCDF(IFunction1D const * const f) :
127 IFunction1D(f->getXMinimum(), f->get 126 IFunction1D(f->getXMinimum(), f->getXMaximum()),
128 theFunction(f), 127 theFunction(f),
129 normalisation(1./theFunction->integr << 128 normalisation(1./theFunction->integrate(xMin,xMax))
130 fWrap(fw) <<
131 {} 129 {}
132 130
133 G4double operator()(const G4double x) 131 G4double operator()(const G4double x) const {
134 if(fWrap) << 132 return std::min(1., normalisation * theFunction->integrate(xMin,x));
135 return fWrap(std::min(1., normalis <<
136 else <<
137 return std::min(1., normalisation <<
138 } 133 }
139 private: 134 private:
140 IFunction1D const * const theFunction; 135 IFunction1D const * const theFunction;
141 const G4double normalisation; 136 const G4double normalisation;
142 ManipulatorFunc fWrap; << 137 } *theInverseCDF = new InverseCDF(this);
143 } *theInverseCDF = new InverseCDF(this, fW <<
144 138
145 InterpolationTable *theTable = new InvFInt << 139 InverseInterpolationTable *theTable = new InverseInterpolationTable(*theInverseCDF, nNodes);
146 delete theInverseCDF; 140 delete theInverseCDF;
147 return theTable; 141 return theTable;
148 } 142 }
>> 143
149 } 144 }
150 145
151 146