| Geant4 Cross Reference |
1 // 1
2 // *******************************************
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4 // *
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17 // *
18 // * This code implementation is the result
19 // * technical work of the GEANT4 collaboratio
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24 // *******************************************
25 //
26 #ifndef CCalDataSet_h
27 #define CCalDataSet_h
28
29 #include "G4ParticleHPInterpolator.hh"
30 #include <vector>
31
32 // by JPW, working, but to be cleaned up. @@@@
33
34 class CCalDataSet
35 {
36 public:
37
38 void insert(G4double anEnergy, G4double aXse
39 {
40 pair<G4double, G4double> aPoint(anEnergy,
41 theData.push_back(aPoint);
42 }
43
44 double getCrossSection(G4double anEnergy)
45 {
46 G4double result;
47 if(anEnergy < theData[0].first)
48 {
49 result = 0;
50 }
51 else
52 {
53 G4double x1,x2;
54 G4double y1,y2;
55 if(anEnergy > theData[theData.size()-1].
56 {
57 // extrapolation
58 G4int n=theData.size();
59 x1 = theData[n-1].first;
60 y1 = theData[n-1].second;
61 x2 = theData[n-2].first;
62 y2 = theData[n-2].second;
63 }
64 else
65 {
66 // linear search and interpolation
67 unsigned int i;
68 for(i=0; i<theData.size(); ++i)
69 {
70 if(theData[i].first>anEnergy) break;
71 }
72 x1 = theData[i-1].first;
73 y1 = theData[i-1].second;
74 x2 = theData[i].first;
75 y2 = theData[i].second;
76 }
77 // interpolate logarithmic in energy and
78 result = theInterpolator.Interpolate(LOG
79 }
80 return result*barn;
81 }
82
83 private:
84
85 G4ParticleHPInterpolator theInterpolator;
86
87 private:
88
89 vector<pair<G4double, G4double> > theData;
90 };
91 #endif
92