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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 *
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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 *
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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: Vladimir Ivanchenko (Vladimir.Ivan 28 // Author: Vladimir Ivanchenko (Vladimir.Ivantchenko@cern.ch)
29 // 29 //
30 // History: 30 // History:
31 // ----------- 31 // -----------
32 // 27 May 2002 VI Created 32 // 27 May 2002 VI Created
33 // 33 //
34 // ------------------------------------------- 34 // -------------------------------------------------------------------
35 35
36 #include "G4RDLinLogInterpolation.hh" 36 #include "G4RDLinLogInterpolation.hh"
37 37
38 // Constructor 38 // Constructor
39 39
40 G4RDLinLogInterpolation::G4RDLinLogInterpolati 40 G4RDLinLogInterpolation::G4RDLinLogInterpolation()
41 { } 41 { }
42 42
43 43
44 // Destructor 44 // Destructor
45 45
46 G4RDLinLogInterpolation::~G4RDLinLogInterpolat 46 G4RDLinLogInterpolation::~G4RDLinLogInterpolation()
47 { } 47 { }
48 48
49 49
50 G4double G4RDLinLogInterpolation::Calculate(G4 50 G4double G4RDLinLogInterpolation::Calculate(G4double x, G4int bin,
51 const G4DataVector& points, 51 const G4DataVector& points,
52 const G4DataVector& data) const 52 const G4DataVector& data) const
53 { 53 {
54 G4int nBins = data.size() - 1; 54 G4int nBins = data.size() - 1;
55 G4double value = 0.; 55 G4double value = 0.;
56 if (x < points[0]) 56 if (x < points[0])
57 { 57 {
58 value = 0.; 58 value = 0.;
59 } 59 }
60 else if (bin < nBins) 60 else if (bin < nBins)
61 { 61 {
62 G4double e1 = points[bin]; 62 G4double e1 = points[bin];
63 G4double e2 = points[bin+1]; 63 G4double e2 = points[bin+1];
64 G4double d1 = std::log(data[bin]); 64 G4double d1 = std::log(data[bin]);
65 G4double d2 = std::log(data[bin+1]); 65 G4double d2 = std::log(data[bin+1]);
66 value = std::exp(d1 + (d2 - d1)*(x - e1) 66 value = std::exp(d1 + (d2 - d1)*(x - e1)/ (e2 - e1));
67 } 67 }
68 else 68 else
69 { 69 {
70 value = data[nBins]; 70 value = data[nBins];
71 } 71 }
72 return value; 72 return value;
73 } 73 }
74 74