PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "">

Special Functions

Ruby/GSL provides all the GSL special functions as module functions which are named as the same of the C functions. For example, to compute the Bessel function J0(x), one may invoke the gsl_sf_bessel_J0 function,

require 'gsl' 

x = 1.0
p gsl_sf_bessel_J0(x)      <---- "full" name

Alternatively, including the module GSL_Sf,

require 'gsl'
include GSL_Sf

p bessel_J0(x)             <---- withoug the predix "gsl_sf"

See GSL manual for the complete list of the special functions.