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26 // 26 //
>> 27 // $Id: G4LogLogInterpolator.cc 70904 2013-06-07 10:34:25Z gcosmo $
27 // 28 //
28 // Author: Maria Grazia Pia (Maria.Grazia.Pia@ 29 // Author: Maria Grazia Pia (Maria.Grazia.Pia@cern.ch)
29 // 30 //
30 // History: 31 // History:
31 // ----------- 32 // -----------
32 // 31 Jul 2001 MGP Created 33 // 31 Jul 2001 MGP Created
33 // 31 Jul 2008 MGP Revised and rename 34 // 31 Jul 2008 MGP Revised and renamed to G4LogLogInterpolator
34 // 35 //
35 // ------------------------------------------- 36 // -------------------------------------------------------------------
36 37
37 #include "G4LogLogInterpolator.hh" 38 #include "G4LogLogInterpolator.hh"
38 39
39 // Constructor 40 // Constructor
40 41
41 G4LogLogInterpolator::G4LogLogInterpolator() 42 G4LogLogInterpolator::G4LogLogInterpolator()
42 { } 43 { }
43 44
44 // Destructor 45 // Destructor
45 46
46 G4LogLogInterpolator::~G4LogLogInterpolator() 47 G4LogLogInterpolator::~G4LogLogInterpolator()
47 { } 48 { }
48 49
49 G4IInterpolator* G4LogLogInterpolator::Clone() 50 G4IInterpolator* G4LogLogInterpolator::Clone() const
50 { return new G4LogLogInterpolator; } 51 { return new G4LogLogInterpolator; }
51 52
52 53
53 G4double G4LogLogInterpolator::Calculate(G4dou 54 G4double G4LogLogInterpolator::Calculate(G4double x, G4int bin,
54 const G4DataVector& points, 55 const G4DataVector& points,
55 const G4DataVector& data) const 56 const G4DataVector& data) const
56 { 57 {
57 G4int nBins = G4int(data.size() - 1); << 58 G4int nBins = data.size() - 1;
58 // ---- MGP ---- To be verified; value = 0. 59 // ---- MGP ---- To be verified; value = 0. is redundant here
59 G4double value = 0.; 60 G4double value = 0.;
60 if (x < points[0] || x == 0.) 61 if (x < points[0] || x == 0.)
61 { 62 {
62 value = 0; 63 value = 0;
63 } 64 }
64 else if (bin < nBins) 65 else if (bin < nBins)
65 { 66 {
66 G4double e1 = points[bin]; 67 G4double e1 = points[bin];
67 G4double e2 = points[bin+1]; 68 G4double e2 = points[bin+1];
68 G4double d1 = data[bin]; 69 G4double d1 = data[bin];
69 G4double d2 = data[bin+1]; 70 G4double d2 = data[bin+1];
70 71
71 if (d1 != 0. && d2 != 0.) 72 if (d1 != 0. && d2 != 0.)
72 { 73 {
73 value = (std::log10(d1)*std::log10(e2/x) + 74 value = (std::log10(d1)*std::log10(e2/x) + std::log10(d2)*std::log10(x/e1)) / std::log10(e2/e1);
74 value = std::pow(10.,value); 75 value = std::pow(10.,value);
75 } 76 }
76 else 77 else
77 { 78 {
78 value = 0.; 79 value = 0.;
79 } 80 }
80 } 81 }
81 else 82 else
82 { 83 {
83 value = data[nBins]; 84 value = data[nBins];
84 } 85 }
85 86
86 return value; 87 return value;
87 } 88 }
88 89