CLHEP/GenericFunctions/Ln.hh
// -*- C++ -*-
// $Id: Ln.hh,v 1.2 2001/06/18 13:53:12 evc Exp $
//---------------------Ln---------------------------------------------------//
// //
// Class Ln //
// Joe Boudreau, Petar Maksimovic, November 1999 //
// //
//--------------------------------------------------------------------------//
#ifndef Ln_h
#define Ln_h 1
#include "CLHEP/GenericFunctions/AbsFunction.hh"
HEP_BEGIN_NAMESPACE(Genfun)
class Ln : public AbsFunction {
FUNCTION_OBJECT_DEF(Ln)
public:
// Constructor
Ln();
// Destructor
virtual ~Ln();
// Copy constructor
Ln(const Ln &right);
// Retreive function value
virtual double operator ()(double argument) const;
virtual double operator ()(const Argument & a) const {return operator() (a[0]);}
// 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 Ln
const Ln & operator=(const Ln &right);
};
HEP_END_NAMESPACE(Genfun)
#endif
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