include/EvtGenModels/EvtItgPtrFunction.hh

0001
0002 /***********************************************************************
0003 * Copyright 1998-2020 CERN for the benefit of the EvtGen authors       *
0004 *                                                                      *
0005 * This file is part of EvtGen.                                         *
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0020
0021 #ifndef EVTITGPTRFUNCTION_HH
0022 #define EVTITGPTRFUNCTION_HH
0023
0024 #include "EvtGenModels/EvtItgAbsFunction.hh"
0025
0026 #include <vector>
0027
0028 // Description:
0029 //      Class describing a function with one vector of coefficients. (Stolen and
0030 //      modified from the BaBar IntegrationUtils package - author: Phil Strother).
0031
0032 class EvtItgPtrFunction : public EvtItgAbsFunction {
0033   public:
0034     EvtItgPtrFunction( double ( *theFunction )( double,
0035                                                 const std::vector<double>& ),
0036                        double lowerRange, double upperRange,
0037                        const std::vector<double>& coeffs1 );
0038
0039     void setCoeff( int, int, double ) override;
0040     double getCoeff( int, int ) override;
0041
0042   protected:
0043     double myFunction( double x ) const override;
0044
0045   private:
0046     // Data members
0047     double ( *_myFunction )( double x, const std::vector<double>& coeffs1 );
0048
0049     std::vector<double> _coeffs1;
0050 };
0051
0052 #endif    // EVTITGPTRFUNCTION_HH