CLHEP/GenericFunctions/FunctionNegation.hh
// -*- C++ -*-
// $Id: FunctionNegation.hh,v 1.2 2001/05/16 05:10:33 joeb Exp $
//--------------------------FunctionNegation--------------------------------//
// //
// Class FunctionNegation, output of the unary - operator //
// Joe Boudreau, Petar Maksimovic, November 1999 //
// //
//--------------------------------------------------------------------------//
#ifndef FunctionNegation_h
#define FunctionNegation_h 1
#include "CLHEP/GenericFunctions/AbsFunction.hh"
HEP_BEGIN_NAMESPACE(Genfun)
class FunctionNegation : public AbsFunction {
FUNCTION_OBJECT_DEF(FunctionNegation)
public:
// Constructor
FunctionNegation(const AbsFunction *arg1);
// Copy constructor.
FunctionNegation(const FunctionNegation &right);
// Destructor
virtual ~FunctionNegation();
// 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 FunctionNegation
const FunctionNegation & operator=(const FunctionNegation &right);
// The function we're negating.
const AbsFunction *_arg1;
};
HEP_END_NAMESPACE(Genfun)
#endif
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