Geant4  9.6.p02
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G4RDLinLogLogInterpolation.cc
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25 //
26 //
27 // Author: Vladimir Ivanchenko (Vladimir.Ivantchenko@cern.ch)
28 //
29 // History:
30 // -----------
31 // 29 May 2002 VI Created
32 //
33 // -------------------------------------------------------------------
34 
36 
37 // Constructor
38 
40 { }
41 
42 // Destructor
43 
45 { }
46 
48 { return new G4RDLinLogLogInterpolation; }
49 
50 
52  const G4DataVector& points,
53  const G4DataVector& data) const
54 {
55  G4int nBins = data.size() - 1;
56  G4double value = 0.;
57  if (x < points[0])
58  {
59  value = 0.;
60  }
61  else if (bin < nBins)
62  {
63  G4double e1 = points[bin];
64  G4double e2 = points[bin+1];
65  G4double d1 = data[bin];
66  G4double d2 = data[bin+1];
67  if(d1 > 0.0 && d2 > 0.0) {
68  value = (std::log10(d1)*std::log10(e2/x) + std::log10(d2)*std::log10(x/e1)) / std::log10(e2/e1);
69  value = std::pow(10.,value);
70  } else {
71  value = (d1*std::log10(e2/x) + d2*std::log10(x/e1)) / std::log10(e2/e1);
72  }
73  }
74  else
75  {
76  value = data[nBins];
77  }
78 
79  return value;
80 }