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1 // 1 //
2 // ******************************************* 2 // ********************************************************************
3 // * License and Disclaimer 3 // * License and Disclaimer *
4 // * 4 // * *
5 // * The Geant4 software is copyright of th 5 // * The Geant4 software is copyright of the Copyright Holders of *
6 // * the Geant4 Collaboration. It is provided 6 // * the Geant4 Collaboration. It is provided under the terms and *
7 // * conditions of the Geant4 Software License 7 // * conditions of the Geant4 Software License, included in the file *
8 // * LICENSE and available at http://cern.ch/ 8 // * LICENSE and available at http://cern.ch/geant4/license . These *
9 // * include a list of copyright holders. 9 // * include a list of copyright holders. *
10 // * 10 // * *
11 // * Neither the authors of this software syst 11 // * Neither the authors of this software system, nor their employing *
12 // * institutes,nor the agencies providing fin 12 // * institutes,nor the agencies providing financial support for this *
13 // * work make any representation or warran 13 // * work make any representation or warranty, express or implied, *
14 // * regarding this software system or assum 14 // * regarding this software system or assume any liability for its *
15 // * use. Please see the license in the file 15 // * use. Please see the license in the file LICENSE and URL above *
16 // * for the full disclaimer and the limitatio 16 // * for the full disclaimer and the limitation of liability. *
17 // * 17 // * *
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. *
20 // * By using, copying, modifying or distri 20 // * By using, copying, modifying or distributing the software (or *
21 // * any work based on the software) you ag 21 // * any work based on the software) you agree to acknowledge its *
22 // * use in resulting scientific publicati 22 // * use in resulting scientific publications, and indicate your *
23 // * acceptance of all terms of the Geant4 Sof 23 // * acceptance of all terms of the Geant4 Software license. *
24 // ******************************************* 24 // ********************************************************************
25 // 25 //
26 // 26 //
27 // 27 //
28 // Author: Maria Grazia Pia (Maria.Grazia.Pia@ 28 // Author: Maria Grazia Pia (Maria.Grazia.Pia@cern.ch)
29 // 29 //
30 // History: 30 // History:
31 // ----------- 31 // -----------
32 // 31 Jul 2001 MGP Created 32 // 31 Jul 2001 MGP Created
33 // 31 Jul 2008 MGP Revised and rename 33 // 31 Jul 2008 MGP Revised and renamed to G4LogLogInterpolator
34 // 34 //
35 // ------------------------------------------- 35 // -------------------------------------------------------------------
36 36
37 #include "G4LogLogInterpolator.hh" 37 #include "G4LogLogInterpolator.hh"
38 38
39 // Constructor 39 // Constructor
40 40
41 G4LogLogInterpolator::G4LogLogInterpolator() 41 G4LogLogInterpolator::G4LogLogInterpolator()
42 { } 42 { }
43 43
44 // Destructor 44 // Destructor
45 45
46 G4LogLogInterpolator::~G4LogLogInterpolator() 46 G4LogLogInterpolator::~G4LogLogInterpolator()
47 { } 47 { }
48 48
49 G4IInterpolator* G4LogLogInterpolator::Clone() 49 G4IInterpolator* G4LogLogInterpolator::Clone() const
50 { return new G4LogLogInterpolator; } 50 { return new G4LogLogInterpolator; }
51 51
52 52
53 G4double G4LogLogInterpolator::Calculate(G4dou 53 G4double G4LogLogInterpolator::Calculate(G4double x, G4int bin,
54 const G4DataVector& points, 54 const G4DataVector& points,
55 const G4DataVector& data) const 55 const G4DataVector& data) const
56 { 56 {
57 G4int nBins = G4int(data.size() - 1); 57 G4int nBins = G4int(data.size() - 1);
58 // ---- MGP ---- To be verified; value = 0. 58 // ---- MGP ---- To be verified; value = 0. is redundant here
59 G4double value = 0.; 59 G4double value = 0.;
60 if (x < points[0] || x == 0.) 60 if (x < points[0] || x == 0.)
61 { 61 {
62 value = 0; 62 value = 0;
63 } 63 }
64 else if (bin < nBins) 64 else if (bin < nBins)
65 { 65 {
66 G4double e1 = points[bin]; 66 G4double e1 = points[bin];
67 G4double e2 = points[bin+1]; 67 G4double e2 = points[bin+1];
68 G4double d1 = data[bin]; 68 G4double d1 = data[bin];
69 G4double d2 = data[bin+1]; 69 G4double d2 = data[bin+1];
70 70
71 if (d1 != 0. && d2 != 0.) 71 if (d1 != 0. && d2 != 0.)
72 { 72 {
73 value = (std::log10(d1)*std::log10(e2/x) + 73 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); 74 value = std::pow(10.,value);
75 } 75 }
76 else 76 else
77 { 77 {
78 value = 0.; 78 value = 0.;
79 } 79 }
80 } 80 }
81 else 81 else
82 { 82 {
83 value = data[nBins]; 83 value = data[nBins];
84 } 84 }
85 85
86 return value; 86 return value;
87 } 87 }
88 88