CLHEP/GenericFunctions/AssociatedLegendre.hh
// -*- C++ -*-
// $Id: AssociatedLegendre.hh,v 1.2 2001/05/16 05:10:29 joeb Exp $
//---------------------AssociatedLegendre-----------------------------------//
// //
// Class AssociatedLegendre. An associated legendre polynomial //
// Joe Boudreau, Petar Maksimovic, November 1999 //
// //
//--------------------------------------------------------------------------//
#ifndef AssociatedLegendre_h
#define AssociatedLegendre_h 1
#include "CLHEP/GenericFunctions/AbsFunction.hh"
#include "CLHEP/GenericFunctions/Parameter.hh"
HEP_BEGIN_NAMESPACE(Genfun)
class AssociatedLegendre : public AbsFunction {
FUNCTION_OBJECT_DEF(AssociatedLegendre)
public:
// Constructor
AssociatedLegendre(unsigned int l, unsigned int m);
// Copy constructor
AssociatedLegendre(const AssociatedLegendre &right);
// Destructor
virtual ~AssociatedLegendre();
// Retreive function value
virtual double operator ()(double argument) const;
virtual double operator ()(const Argument & a) const {return operator() (a[0]);}
// Get the integer variable l
unsigned int l() const;
// Get the integer variable mj
unsigned int m() const;
private:
// It is illegal to assign an adjustable constant
const AssociatedLegendre & operator=(const AssociatedLegendre &right);
// Here is the decay constant
unsigned int _l;
// Here is the sigma
unsigned int _m;
// Here is the "work function"
const AbsFunction *_function;
// This function is needed in all constructors:
void create();
};
HEP_END_NAMESPACE(Genfun)
#endif
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