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18 // * This code implementation is the result 18 // * This code implementation is the result of the scientific and *
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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