NAME

       Math::GSL::QRNG - Quasi-random number generators

SYNOPSIS

           # use OO approach
           use Math::GSL::QRNG;

           my $QRNG = Math::GSL::QRNG::Sobol->new(2);
           my @samples = $QRNG->get();

           # use GSL interface
           use Math::GSL::QRNG qw/:all/;

DESCRIPTION

       This module interfaces with GNU Scientific Library quasi-random number generators (QRNG).

OO Interface

       The OO Interface described in this documentation is available to all different subclasses,
       namely:

       Math::GSL::QRNG::Sobol
       Math::GSL::QRNG::Niederreiter2
       Math::GSL::QRNG::Halton
       Math::GSL::QRNG::ReverseHalton

   reinit
       Reinitializes the generator to its starting point. Note that quasi-random sequences do not
       use a seed and always produce the same set of values.

               $qrng->reinit();

   get
       Retrieves the next point from the sequence generator.  Returns "undef" on error.

               my @points = $qrng->get();

   name
       Retrieves the QRNG name.

           my $name = $qrng->name();

   state_size
       Returns the size of the QRNG state.

   clone
       Returns an exact copy of the current QRNG.

GSL API

       Here is a list of all the functions included in this module :

       "gsl_qrng_alloc($T, $n)" - This function returns a pointer to a newly-created instance of
       a quasi-random sequence generator of type $T and dimension $d. The type $T must be one of
       the constants included in this module.
       "gsl_qrng_clone($q)" - This function returns a pointer to a newly created generator which
       is an exact copy of the generator $q.
       "gsl_qrng_memcpy($dest, $src)" - This function copies the quasi-random sequence generator
       $src into the pre-existing generator $dest, making $dest into an exact copy of $src. The
       two generators must be of the same type.
       "gsl_qrng_free($q)" - This function frees all the memory associated with the generator $q.
       Don't call this function explicitly. It will be called automatically in DESTROY.
       "gsl_qrng_init($q)" - This function reinitializes the generator $q to its starting point.
       Note that quasi-random sequences do not use a seed and always produce the same set of
       values.
       "gsl_qrng_name($q)" - This function returns a pointer to the name of the generator $q.
       "gsl_qrng_size($q)" - This function returns the size of the state of generator r from the
       generator $q. You can use this information to access the state directly.
       "gsl_qrng_state($q)" - This function returns a pointer to the state of generator r from
       the generator $q. You can use this information to access the state directly.
       "gsl_qrng_get"

       This module also contains the following constants :

       $gsl_qrng_niederreiter_2
       $gsl_qrng_sobol
       $gsl_qrng_halton
       $gsl_qrng_reversehalton

       For more information on the functions, we refer you to the GSL official documentation:
       <http://www.gnu.org/software/gsl/manual/html_node/>

EXAMPLES

AUTHORS

       Jonathan "Duke" Leto <jonathan@leto.net> Thierry Moisan <thierry.moisan@gmail.com> Alberto
       Simo~es <ambs@cpan.org>

COPYRIGHT AND LICENSE

       Copyright (C) 2008-2021 Jonathan "Duke" Leto and Thierry Moisan

       This program is free software; you can redistribute it and/or modify it under the same
       terms as Perl itself.