1 | // |
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2 | // ******************************************************************** |
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3 | // * License and Disclaimer * |
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4 | // * * |
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5 | // * The Geant4 software is copyright of the Copyright Holders of * |
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6 | // * the Geant4 Collaboration. It is provided under the terms and * |
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7 | // * conditions of the Geant4 Software License, included in the file * |
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8 | // * LICENSE and available at http://cern.ch/geant4/license . These * |
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9 | // * include a list of copyright holders. * |
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10 | // * * |
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11 | // * Neither the authors of this software system, nor their employing * |
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12 | // * institutes,nor the agencies providing financial support for this * |
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13 | // * work make any representation or warranty, express or implied, * |
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14 | // * regarding this software system or assume any liability for its * |
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15 | // * use. Please see the license in the file LICENSE and URL above * |
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16 | // * for the full disclaimer and the limitation of liability. * |
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17 | // * * |
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18 | // * This code implementation is the result of the scientific and * |
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19 | // * technical work of the GEANT4 collaboration. * |
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20 | // * By using, copying, modifying or distributing the software (or * |
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21 | // * any work based on the software) you agree to acknowledge its * |
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22 | // * use in resulting scientific publications, and indicate your * |
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23 | // * acceptance of all terms of the Geant4 Software license. * |
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24 | // ******************************************************************** |
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25 | // |
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26 | // |
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27 | // $Id: G4SemiLogInterpolation.cc,v 1.6 2006/06/29 19:41:18 gunter Exp $ |
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28 | // GEANT4 tag $Name: $ |
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29 | // |
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30 | // Author: Maria Grazia Pia (Maria.Grazia.Pia@cern.ch) |
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31 | // |
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32 | // History: |
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33 | // ----------- |
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34 | // 31 Jul 2001 MGP Created |
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35 | // |
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36 | // ------------------------------------------------------------------- |
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37 | |
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38 | #include "G4SemiLogInterpolation.hh" |
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39 | |
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40 | // Constructor |
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41 | |
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42 | G4SemiLogInterpolation::G4SemiLogInterpolation() |
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43 | { } |
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44 | |
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45 | |
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46 | // Destructor |
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47 | |
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48 | G4SemiLogInterpolation::~G4SemiLogInterpolation() |
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49 | { } |
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50 | |
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51 | G4VDataSetAlgorithm* G4SemiLogInterpolation::Clone() const |
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52 | { return new G4SemiLogInterpolation; } |
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53 | |
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54 | |
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55 | G4double G4SemiLogInterpolation::Calculate(G4double x, G4int bin, |
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56 | const G4DataVector& points, |
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57 | const G4DataVector& data) const |
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58 | { |
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59 | G4int nBins = data.size() - 1; |
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60 | G4double value = 0.; |
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61 | if (x < points[0]) |
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62 | { |
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63 | value = 0.; |
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64 | } |
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65 | else if (bin < nBins) |
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66 | { |
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67 | G4double e1 = points[bin]; |
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68 | G4double e2 = points[bin+1]; |
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69 | G4double d1 = data[bin]; |
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70 | G4double d2 = data[bin+1]; |
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71 | value = (d1*std::log10(e2/x) + d2*std::log10(x/e1)) / std::log10(e2/e1); |
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72 | } |
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73 | else |
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74 | { |
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75 | value = data[nBins]; |
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76 | } |
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77 | return value; |
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78 | } |
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