GsfBetheHeitlerUpdator::Polynomial Class Reference

Public Member Functions
float	operator() (float x) const
	Evaluation of the polynomial. More...
	Polynomial ()
	Default constructor (needed for construction of a vector) More...
	Polynomial (float coefficients[], int is)

Private Attributes
int	m_size =0
float	theCoeffs [MaxOrder] ={0}

Detailed Description

Helper class for construction & evaluation of a polynomial

Definition at line 34 of file GsfBetheHeitlerUpdator.h.

Constructor & Destructor Documentation

GsfBetheHeitlerUpdator::Polynomial::Polynomial ( )

inline

Default constructor (needed for construction of a vector)

Definition at line 37 of file GsfBetheHeitlerUpdator.h.

{}

GsfBetheHeitlerUpdator::Polynomial::Polynomial ( float  coefficients[], int  is  )

inline

Constructor from a vector of coefficients (in decreasing order of powers of x)

Definition at line 41 of file GsfBetheHeitlerUpdator.h.

References i, m_size, and theCoeffs.

                                              :
      m_size(is) {
      for (int i=0; i!=m_size; ++i)
    theCoeffs[i]=coefficients[i];
    }

Member Function Documentation

float GsfBetheHeitlerUpdator::Polynomial::operator() ( float  x ) const

inline

Evaluation of the polynomial.

Definition at line 47 of file GsfBetheHeitlerUpdator.h.

References i, m_size, and theCoeffs.

                                     {
      float sum=theCoeffs[0];
      for (int i=1; i!=m_size; ++i)
    sum = x*sum + theCoeffs[i];
      return sum;
    }

Member Data Documentation

int GsfBetheHeitlerUpdator::Polynomial::m_size =0

private

Definition at line 55 of file GsfBetheHeitlerUpdator.h.

Referenced by operator()(), and Polynomial().

float GsfBetheHeitlerUpdator::Polynomial::theCoeffs[MaxOrder] ={0}

private

Definition at line 54 of file GsfBetheHeitlerUpdator.h.

Referenced by operator()(), and Polynomial().