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G4NeutronHPPolynomExpansion.hh
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27 // $Id$
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29 #ifndef G4NeutronHPPolynomExpansion_h
30 #define G4NeutronHPPolynomExpansion_h 1
31 
32 #include <fstream>
34 
35 #include "globals.hh"
36 #include "G4ios.hh"
37 
39 {
40  public:
42  {
43  theCoeff = 0;
44  nPoly=0;
45  }
47  {
48  if(theCoeff!=0) delete [] theCoeff;
49  }
50 
51  inline void Init(std::ifstream & theData)
52  {
53  theData >> nPoly;
54  theCoeff = new G4double[nPoly];
55  G4int i;
56  for(i=0;i<nPoly;i++)
57  {
58  theData >> theCoeff[i];
59  }
60  }
61 
62  inline G4double GetValue(G4double anEnergy)
63  {
64  G4int i;
65  G4double result=0;
66  G4double base = anEnergy/CLHEP::eV;
67  G4double running = 1;
68  for(i=0; i<nPoly; i++)
69  {
70  result+=theCoeff[i]*running;
71  running *= base;
72  }
73  return result;
74  }
75  private:
76 
77  G4int nPoly;
78  G4double * theCoeff;
79 };
80 
81 #endif