#include <vector>
#include <map>

Namespaces
namespace	apfel
	Namespace for all APFEL++ functions and classes.

Functions

Fortran harmonic polylogarithms

Harmonic polylogarithms up to weight five

Parameters

x	real input argument
nw	maximum number of weights requested
Hr1	weight 1 harmonic polylogs (1D array)
Hr2	weight 2 harmonic polylogs (2D array)
Hr3	weight 3 harmonic polylogs (3D array)
Hr4	weight 4 harmonic polylogs (4D array)
Hr5	weight 5 harmonic polylogs (5D array)
n1	lower bound of the weight index requested
n2	upper bound of the weight index requested

Note: This is just a suitably formatted wrapper of the original fortran function (see src/kernel/hplog.f) to facilitate the call of the harmonic logarithms from a C++ code.

double apfel::apf_hplog_ (double *wx, int *wnw, double *Hr1, double *Hr2, double *Hr3, double *Hr4, double *Hr5, int *wn1, int *wn2)

Special functions

Collection of special functions needed in the evaluation of some expressions.

double apfel::dilog (double const &x)

Real dilogarithm $\mathrm{Li}_2(z)$ .

double apfel::wgplg (int const &n, int const &p, double const &x)

Function for the computation of the Nielsen's generalized dilogs.

double apfel::hpoly (std::vector< int > const &w, double const &x)

Function for the computation of the Harmonic polylogs up to weight 5.

double apfel::digamma (double const &x)

Digamma function.

int apfel::HPLogMap (std::vector< int > const &w)

Function that returns the index to be used with unidimensional arrays returned by hplog_.

std::vector< int > apfel::UnpackWeights (std::vector< int > const &w)

Function that returns the unpacked weights of the HPL given the input vector.

Namespaces