FunctionSum.hh

Go to the documentation of this file.

// -*- C++ -*-
// $Id: FunctionSum.hh,v 1.2 2003/09/06 14:04:13 boudreau Exp $
//--------------------------FunctionSum-------------------------------------//
//                                                                          //
// FunctionSum, result of addition of two functions.                        //
// Joe Boudreau, Petar Maksimovic, November 1999                            //
//                                                                          //
//--------------------------------------------------------------------------//
 
#ifndef FunctionSum_h
#define FunctionSum_h 1
#include "CLHEP/GenericFunctions/AbsFunction.hh"
 
namespace Genfun {
 
  /**
   * @author
   * @ingroup genfun
   */
  class FunctionSum : public AbsFunction  {
 
    FUNCTION_OBJECT_DEF(FunctionSum)
  
      public:
  
    // Constructor
    FunctionSum(const AbsFunction *arg1, const AbsFunction *arg2);
  
    // Copy constructor
    FunctionSum(const FunctionSum &right);
 
    // Destructor
    virtual ~FunctionSum();
  
    // Retreive function value
    virtual double operator ()(double argument) const override;
    virtual double operator ()(const Argument & a) const override;
 
    // Dimensionality 
    virtual unsigned int dimensionality() const override;
 
    // Derivative.  
    Derivative partial (unsigned int) const override;
 
    // Does this function have an analytic derivative?
    virtual bool hasAnalyticDerivative() const override {return true;}
 
  private:
 
    // It is illegal to assign a FunctionSum
    const FunctionSum & operator=(const FunctionSum &right);
 
    const AbsFunction *_arg1;
    const AbsFunction *_arg2;
  };
} // namespace Genfun
#endif