include/Geant4/G4BetaSpectrumSampler.hh

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0025 //
0026 ////////////////////////////////////////////////////////////////////////////////
0027 //                                                                            //
0028 //  File:   G4BetaSpectrumSampler.hh                                          //
0029 //  Author: D.H. Wright                                                       //
0030 //  Date:   21 November 2022                                                  //
0031 //  Description: samples a spectrum which is a piece-wise linear function of  //
0032 //               energy. The CDF is calculated by trapezoidal integration     //
0033 //               and within bins the line y = mx + b is sampled.              //
0034 //                                                                            //
0035 ////////////////////////////////////////////////////////////////////////////////
0036
0037 #ifndef G4BetaSpectrumSampler_h
0038 #define G4BetaSpectrumSampler_h 1
0039
0040 #include "globals.hh"
0041
0042 class G4BetaSpectrumSampler
0043 {
0044 public:
0045
0046   // sampling of any spectra using cumulative PDF function
0047   // energy stepts are uniform starting from zero
0048   // no check on array size is performed
0049   static G4double shoot(const G4int npoints, const G4double* aCDF,
0050                         const G4double estep);
0051
0052 };
0053 #endif
0054