EvtItgPtrFunction.hh

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//--------------------------------------------------------------------------
//
//
// Copyright Information: See EvtGen/COPYRIGHT
//
// Environment:
//      This software is part of the EvtGen package developed jointly
//      for the BaBar and CLEO collaborations.  If you use all or part
//      of it, please give an appropriate acknowledgement.
//
// Module: EvtItgPtrFunction.hh
//
// Description:
//      Class describing a function with one vector of coefficients. (Stolen and
//      modified from the BaBar IntegrationUtils package - author: Phil Strother).
//
// Modification history:
//
//    Jane Tinslay                March 21, 2001       Module adapted for use in
//                                                     EvtGen
//
//------------------------------------------------------------------------
 
#ifndef EVTITGPTRFUNCTION_HH
#define EVTITGPTRFUNCTION_HH
 
#include "EvtItgAbsFunction.hh"
#include <vector>
 
class EvtItgPtrFunction : public EvtItgAbsFunction {
 
public:
  EvtItgPtrFunction( double ( *theFunction )( double, const std::vector<double>& ),
                     double lowerRange, double upperRange,
                     const std::vector<double>& coeffs1 );
 
  virtual ~EvtItgPtrFunction();
 
  virtual void   setCoeff( int, int, double );
  virtual double getCoeff( int, int );
 
protected:
  virtual double myFunction( double x ) const;
 
private:
  // Data members
  double ( *_myFunction )( double x, const std::vector<double>& coeffs1 );
 
  // Note: if your class needs a copy constructor or an assignment operator,
  //  make one of the following public and implement it.
  EvtItgPtrFunction( const EvtItgPtrFunction& );             //// Copy Constructor
  EvtItgPtrFunction&  operator=( const EvtItgPtrFunction& ); // Assignment op
  std::vector<double> _coeffs1;
};
 
#endif // EVTITGPTRFUNCTION_HH