Polynomial< T, Log, Exp >

Description

template<double(*)(double, int) T = Basis::Chebyshev, double(*)(double) Log = identity, double(*)(double) Exp = identity>
struct Step::Polynomial< T, Log, Exp >

A class to define a polynomial of a certain degree.

mi(n) and ma(x) arguments are used to transform the variable into [-1,1]

#include <Step.h>

Inheritance diagram for Polynomial< T, Log, Exp >:

Collaboration diagram for Polynomial< T, Log, Exp >:

Public Member Functions
	Polynomial (unsigned int d, double mi, double Ma, std::ostream &Stream=std::cout)
virtual	~Polynomial ()=default
double	operator() (const double *x, const double *p) const override

Additional Inherited Members
Public Attributes inherited from FunctionalForm
unsigned int	npars
const double	m
const double	M
std::ostream &	stream
Protected Member Functions inherited from FunctionalForm
	FunctionalForm (const char *classname, unsigned int Npars, double mi, double Ma, std::ostream &Stream=std::cout)
virtual	~FunctionalForm ()=default

Constructor & Destructor Documentation

Polynomial()

Polynomial ( unsigned int  d, double  mi, double  Ma, std::ostream &  Stream = std::cout  )

inline

Constructor.

                                                                                    :
        FunctionalForm(__func__, d+1, mi, Ma, Stream) { }

~Polynomial()

virtual ~Polynomial ( )

virtualdefault

Member Function Documentation

operator()()

double operator() ( const double *  x, const double *  p  ) const

inlineoverridevirtual

operator overloading for the functor to be used with ROOT TF1

Implements FunctionalForm.

    {
        double nx = -1 + 2* (Log(*x) - Log(m)) / (Log(M) - Log(m));
        double result = 0;
        for (unsigned int i = 0; i < npars; ++i)
            result += p[i]*T(nx,i);
        return Exp(result);
    }

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The documentation for this struct was generated from the following file:

• interface/Step.h