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 | // Author: Vladimir Ivanchenko (Vladimir.Ivantchenko@cern.ch) |
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28 | // |
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29 | // History: |
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30 | // ----------- |
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31 | // 29 May 2002 VI Created |
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32 | // |
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33 | // ------------------------------------------------------------------- |
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34 | |
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35 | #include "G4LinLogLogInterpolation.hh" |
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36 | |
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37 | // Constructor |
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38 | |
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39 | G4LinLogLogInterpolation::G4LinLogLogInterpolation() |
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40 | { } |
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41 | |
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42 | // Destructor |
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43 | |
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44 | G4LinLogLogInterpolation::~G4LinLogLogInterpolation() |
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45 | { } |
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46 | |
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47 | G4VDataSetAlgorithm* G4LinLogLogInterpolation::Clone() const |
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48 | { return new G4LinLogLogInterpolation; } |
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49 | |
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50 | |
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51 | G4double G4LinLogLogInterpolation::Calculate(G4double x, G4int bin, |
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52 | const G4DataVector& points, |
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53 | const G4DataVector& data) const |
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54 | { |
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55 | G4int nBins = data.size() - 1; |
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56 | G4double value = 0.; |
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57 | if (x < points[0]) |
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58 | { |
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59 | value = 0.; |
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60 | } |
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61 | else if (bin < nBins) |
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62 | { |
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63 | G4double e1 = points[bin]; |
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64 | G4double e2 = points[bin+1]; |
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65 | G4double d1 = data[bin]; |
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66 | G4double d2 = data[bin+1]; |
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67 | if(d1 > 0.0 && d2 > 0.0) { |
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68 | value = (std::log10(d1)*std::log10(e2/x) + std::log10(d2)*std::log10(x/e1)) / std::log10(e2/e1); |
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69 | value = std::pow(10.,value); |
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70 | } else { |
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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 | } |
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74 | else |
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75 | { |
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76 | value = data[nBins]; |
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77 | } |
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78 | |
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79 | return value; |
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80 | } |
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