GsfBetheHeitlerUpdator::Polynomial Class Reference

List of all members.

Public Member Functions
double	operator() (const double &x) const
	Evaluation of the polynomial.
	Polynomial ()
	Default constructor (needed for construction of a vector)
	Polynomial (const std::vector< double > &coefficients)
Private Attributes
std::vector< double >	theCoeffs

---

Detailed Description

Helper class for construction & evaluation of a polynomial

Definition at line 24 of file GsfBetheHeitlerUpdator.h.

---

Constructor & Destructor Documentation

GsfBetheHeitlerUpdator::Polynomial::Polynomial

(

)

[inline]

Default constructor (needed for construction of a vector)

Definition at line 27 of file GsfBetheHeitlerUpdator.h.

{}

GsfBetheHeitlerUpdator::Polynomial::Polynomial

(

const std::vector< double > &

coefficients

)

[inline]

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

Definition at line 31 of file GsfBetheHeitlerUpdator.h.

                                                       :
      theCoeffs(coefficients) {}

---

Member Function Documentation

double GsfBetheHeitlerUpdator::Polynomial::operator()

(

const double &

x

)

const [inline]

Evaluation of the polynomial.

Definition at line 34 of file GsfBetheHeitlerUpdator.h.

References i, and theCoeffs.

                                              {
      double sum(0.);
      for ( std::vector<double>::const_iterator i=theCoeffs.begin();
            i!=theCoeffs.end(); i++ )  sum = x*sum + *i;
      return sum;
    }

---

Member Data Documentation

std::vector<double> GsfBetheHeitlerUpdator::Polynomial::theCoeffs [private]

Definition at line 41 of file GsfBetheHeitlerUpdator.h.

Referenced by operator()().