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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 G4int nBins = data.size() - 1;
56 G4int nBins = G4int(data.size() - 1); <<
57 G4double value = 0.; 56 G4double value = 0.;
58 if (x < points[0]) 57 if (x < points[0])
59 { 58 {
60 value = 0.; 59 value = 0.;
61 } 60 }
62 else if (bin < nBins) 61 else if (bin < nBins)
63 { 62 {
64 G4double e1 = points[bin]; 63 G4double e1 = points[bin];
65 G4double e2 = points[bin+1]; 64 G4double e2 = points[bin+1];
66 G4double d1 = data[bin]; 65 G4double d1 = data[bin];
67 G4double d2 = data[bin+1]; 66 G4double d2 = data[bin+1];
68 if(d1 > 0.0 && d2 > 0.0) { 67 if(d1 > 0.0 && d2 > 0.0) {
69 value = (std::log10(d1)*std::log10(e2/ 68 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); 69 value = std::pow(10.,value);
71 } else { 70 } else {
72 value = (d1*std::log10(e2/x) + d2*std: 71 value = (d1*std::log10(e2/x) + d2*std::log10(x/e1)) / std::log10(e2/e1);
73 } 72 }
74 } 73 }
75 else 74 else
76 { 75 {
77 value = data[nBins]; 76 value = data[nBins];
78 } 77 }
79 78
80 return value; <<
81 } <<
82 <<
83 G4double G4LinLogLogInterpolation::Calculate(G <<
84 const G4DataVector& points, <<
85 cons <<
86 cons <<
87 const G4DataVector& log_data) cons <<
88 { <<
89 //G4cout << "G4LinLogLogInterpolation is per <<
90 G4int nBins = G4int(data.size() - 1); <<
91 G4double value = 0.; <<
92 G4double log_x = std::log10(x); <<
93 if (x < points[0]) <<
94 { <<
95 value = 0.; <<
96 } <<
97 else if (bin < nBins) <<
98 { <<
99 G4double e1 = points[bin]; <<
100 G4double e2 = points[bin+1]; <<
101 G4double d1 = data[bin]; <<
102 G4double d2 = data[bin+1]; <<
103 G4double log_e1 = log_points[bin]; <<
104 G4double log_e2 = log_points[bin+1]; <<
105 G4double log_d1 = log_data[bin]; <<
106 G4double log_d2 = log_data[bin+1]; <<
107 //G4cout << "x = " << x << " , log_x = " <<
108 //G4cout << "e1 = " << e1 << " , d1 = " <<
109 //G4cout << "e2 = " << e2 << " , d2 = " <<
110 //G4cout << "log_e1 = " << log_e1 << " , <<
111 //G4cout << "log_e2 = " << log_e2 << " , <<
112 if (d1 > 0.0 && d2 > 0.0) <<
113 { <<
114 // Values e1, e2, d1 and d2 are the l <<
115 // original energy and data values. S <<
116 // on loagarithmic data should be equ <<
117 value = log_d1 + (log_d2 - log_d1)*(l <<
118 <<
119 //G4cout << "Case of normal log-log i <<
120 //G4cout << "Temp log interpolated va <<
121 <<
122 // Delogarithmize to obtain interpola <<
123 value = std::pow(10.,value); <<
124 <<
125 //G4cout << "Final Interpolated value <<
126 } <<
127 else <<
128 { <<
129 // Case of semi log-log interpolation <<
130 //G4cout << "G4LinLogLogInterpolation <<
131 if (e1 == 0.0) e1 = 1e-300; <<
132 if (e2 == 0.0) e2 = 1e-300; <<
133 value = d1 + (d2 - d1)*(log_x - log_e1 <<
134 //G4cout << "LinLogInterpolation: Fina <<
135 } <<
136 } <<
137 else <<
138 { <<
139 value = data[nBins]; <<
140 } <<
141 return value; 79 return value;
142 } 80 }
143 81