include/EvtGenModels/EvtItgSimpsonIntegrator.hh

0001
0002 /***********************************************************************
0003 * Copyright 1998-2020 CERN for the benefit of the EvtGen authors       *
0004 *                                                                      *
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0020
0021 #ifndef EVTITGSIMPSONINTEGRATOR_HH
0022 #define EVTITGSIMPSONINTEGRATOR_HH
0023
0024 //-------------
0025 // C Headers --
0026 //-------------
0027 extern "C" {
0028 }
0029
0030 #include "EvtGenModels/EvtItgAbsIntegrator.hh"
0031
0032 // Description:
0033 //      Simpson integrator (Stolen and modified from
0034 //      the BaBar IntegrationUtils package - author: Phil Strother).
0035
0036 class EvtItgSimpsonIntegrator : public EvtItgAbsIntegrator {
0037   public:
0038     EvtItgSimpsonIntegrator( const EvtItgAbsFunction&,
0039                              double precision = 1.0e-5, int maxLoop = 20 );
0040
0041   protected:
0042     double evaluateIt( double, double ) const override;
0043
0044   private:
0045     double _precision;
0046     double _maxLoop;
0047
0048     //EvtItgSimpsonIntegrator( const EvtItgSimpsonIntegrator& );                //// Copy Constructor
0049     //EvtItgSimpsonIntegrator& operator= ( const EvtItgSimpsonIntegrator& );    // Assignment op
0050 };
0051
0052 #endif    // ITGSIMPSONINTEGRATOR_HH