CLHEP/GenericFunctions/ConstOverFunction.hh
// -*- C++ -*-
// $Id: ConstOverFunction.hh,v 1.2 2001/05/16 05:10:29 joeb Exp $
//--------------------------ConstOverFunction-------------------------------//
// //
// ConstOverFunction, result of dividing a constant by a function //
// Joe Boudreau, Petar Maksimovic, November 1999 //
// //
//--------------------------------------------------------------------------//
#ifndef ConstOverFunction_h
#define ConstOverFunction_h 1
#include "CLHEP/GenericFunctions/AbsFunction.hh"
HEP_BEGIN_NAMESPACE(Genfun)
class ConstOverFunction : public AbsFunction {
FUNCTION_OBJECT_DEF(ConstOverFunction)
public:
// Constructor
ConstOverFunction(double constant, const AbsFunction *arg);
// Copy constructor
ConstOverFunction(const ConstOverFunction &right);
// Destructor
virtual ~ConstOverFunction();
// Retreive function value
virtual double operator ()(double argument) const;
virtual double operator ()(const Argument & a) const;
// Dimensionality
virtual unsigned int dimensionality() const;
// Derivative.
Derivative partial (unsigned int) const;
// Does this function have an analytic derivative?
virtual bool hasAnalyticDerivative() const {return true;}
private:
// It is illegal to assign a ConstOverFunction
const ConstOverFunction & operator=(const ConstOverFunction &right);
double _constant;
const AbsFunction *_arg;
};
HEP_END_NAMESPACE(Genfun)
#endif
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