EvtItgFunction.hh

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//--------------------------------------------------------------------------
//
// Environment:
//      This software was developed for the BaBar collaboration.  If you
//      use all or part of it, please give an appropriate acknowledgement.
//
// Copyright Information: See EvtGen/COPYRIGHT
//      Copyright (C) 1998      LBNL
//
//------------------------------------------------------------------------
 
#ifndef EVTITGFUNCTION_HH
#define EVTITGFUNCTION_HH
 
#include "EvtItgAbsFunction.hh"
 
/**
 *  Copyright (C) 1998 LBNL
 *
 *  Generic function where the pointer to the function is available.
 *
 *  The function is taken as type pointer to function returning double and
 *  taking a double (the abscissa) and a const RWTValVector<double> reference
 *  (the parameter values of the function) as arguments.
 *
 *  @see EvtItgFunctionEvtItgFunction
 *
 *  @version $Id: EvtItgFunction.hh,v 1.1.1.2 2007/10/26 05:03:14 pingrg Exp $
 *
 *  @author Phil Strother       Originator
 */
 
class EvtItgFunction : public EvtItgAbsFunction {
 
public:
  // Constructors
  EvtItgFunction( double ( *theFunction )( double ), double lowerRange, double upperRange );
 
  // Destructor
  virtual ~EvtItgFunction();
 
  virtual void   setCoeff( int, int, double ){};
  virtual double getCoeff( int, int ) { return 0.0; };
 
protected:
  // Helper functions
 
  virtual double myFunction( double x ) const;
 
private:
  // Data members
  double ( *_myFunction )( double x );
 
  // Note: if your class needs a copy constructor or an assignment operator,
  //  make one of the following public and implement it.
  EvtItgFunction( const EvtItgFunction& );            // Copy Constructor
  EvtItgFunction& operator=( const EvtItgFunction& ); // Assignment op
};
 
#endif // EvtITGFUNCTION_HH