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G4INCLNDFGaussian.hh
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25 //
26 // INCL++ intra-nuclear cascade model
27 // Alain Boudard, CEA-Saclay, France
28 // Joseph Cugnon, University of Liege, Belgium
29 // Jean-Christophe David, CEA-Saclay, France
30 // Pekka Kaitaniemi, CEA-Saclay, France, and Helsinki Institute of Physics, Finland
31 // Sylvie Leray, CEA-Saclay, France
32 // Davide Mancusi, CEA-Saclay, France
33 //
34 #define INCLXX_IN_GEANT4_MODE 1
35 
36 #include "globals.hh"
37 
45 #ifndef G4INCLNDFGAUSSIAN_HH_
46 #define G4INCLNDFGAUSSIAN_HH_
47 
48 #include "G4INCLIFunction1D.hh"
49 #include <cmath>
50 
51 namespace G4INCL {
52 
53  namespace NuclearDensityFunctions {
54 
55  class GaussianRP : public IFunction1D {
56  public:
57  GaussianRP(G4double maximumRadius, G4double standardDeviation) :
58  IFunction1D(0., maximumRadius),
59  theStandardDeviation(standardDeviation)
60  {}
61 
62  inline G4double operator()(const G4double r) const {
63  const G4double arg = std::pow((r/theStandardDeviation),2);
64  return r*r*arg*std::exp(-arg/2.0);
65  }
66 
67  protected:
69  };
70 
71  class Gaussian : public IFunction1D {
72  public:
73  Gaussian(G4double maximumRadius, G4double standardDeviation) :
74  IFunction1D(0., maximumRadius),
75  theStandardDeviation(standardDeviation),
76  normalisation(std::sqrt(2./Math::pi)/theStandardDeviation)
77  {}
78 
79  inline G4double operator()(const G4double r) const {
80  const G4double arg = std::pow((r/theStandardDeviation),2);
81  return normalisation * arg * std::exp(-arg/2.0);
82  }
83 
84  protected:
87  };
88 
89  }
90 
91 }
92 
93 #endif // G4INCLNDFGAUSSIAN_HH_
94 
GaussianRP(G4double maximumRadius, G4double standardDeviation)
G4double operator()(const G4double r) const
Compute the value of the function.
Gaussian(G4double maximumRadius, G4double standardDeviation)
double G4double
Definition: G4Types.hh:76
Functor for 1-dimensional mathematical functions.
G4double operator()(const G4double r) const
Compute the value of the function.
static constexpr double pi
Definition: G4SIunits.hh:75