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DILOG


NAME

PDL::GSLSF::DILOG - PDL interface to GSL Special Functions


DESCRIPTION

This is an interface to the Special Function package present in the GNU Scientific Library.


SYNOPSIS


FUNCTIONS

gsl_sf_dilog

  Signature: (double x(); double [o]y(); double [o]e())

/* Real part of DiLogarithm(x), for real argument. In Lewins notation, this is Li_2(x). Li_2(x) = - Re[ Integrate[ Log[1-s] / s, {s, 0, x}] ]

gsl_sf_dilog does not process bad values. It will set the bad-value flag of all output piddles if the flag is set for any of the input piddles.

gsl_sf_complex_dilog

  Signature: (double r(); double t(); double [o]re(); double [o]im(); double [o]ere(); double [o]eim())

DiLogarithm(z), for complex argument z = r Exp[i theta].

gsl_sf_complex_dilog does not process bad values. It will set the bad-value flag of all output piddles if the flag is set for any of the input piddles.


AUTHOR

This file copyright (C) 1999 Christian Pellegrin <chri@infis.univ.trieste.it> All rights reserved. There is no warranty. You are allowed to redistribute this software / documentation under certain conditions. For details, see the file COPYING in the PDL distribution. If this file is separated from the PDL distribution, the copyright notice should be included in the file.

The GSL SF modules were written by G. Jungman.