CLHEP/GenericFunctions/BivariateGaussian.hh
// -*- C++ -*-
// $Id:
//---------------------BivariateGaussian------------------------------------//
// //
// Class BivariateGaussian //
// Joe Boudreau, Petar Maksimovic, November 1999 //
// //
//--------------------------------------------------------------------------//
#ifndef BivariateGaussian_h
#define BivariateGaussian_h 1
#include "CLHEP/GenericFunctions/AbsFunction.hh"
#include "CLHEP/GenericFunctions/Parameter.hh"
HEP_BEGIN_NAMESPACE(Genfun)
class BivariateGaussian : public AbsFunction {
FUNCTION_OBJECT_DEF(BivariateGaussian)
public:
// Constructor
BivariateGaussian();
// Copy constructor
BivariateGaussian(const BivariateGaussian &right);
// Destructor
virtual ~BivariateGaussian();
// Retreive function value
virtual double operator ()(double argument) const; // Gives an error.
virtual double operator ()(const Argument & a) const; // Must use this one
// Dimensionality
virtual unsigned int dimensionality() const;
// Get the mean of the BivariateGaussian
Parameter & mean0();
const Parameter & mean0() const;
Parameter & mean1();
const Parameter & mean1() const;
// Get the sigma of the BivariateGaussian
Parameter & sigma0();
const Parameter & sigma0() const;
Parameter & sigma1();
const Parameter & sigma1() const;
// Get the correlation coefficient:
Parameter & corr01();
const Parameter & corr01() const;
private:
// It is illegal to assign an adjustable constant
const BivariateGaussian & operator=(const BivariateGaussian &right);
// Here is the decay constant
Parameter _mean0;
Parameter _mean1;
// Here is the sigma
Parameter _sigma0;
Parameter _sigma1;
// Here is the correlation coefficient:
Parameter _corr01;
};
HEP_END_NAMESPACE(Genfun)
#endif
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