Math::GSL(3)

NAME
Math::GSL - Perl interface to the GNU Scientific Library (GSL)

VERSION
Version 0.27

SYNOPSIS
    use Math::GSL::Matrix;
    my $matrix = Math::GSL::Matrix->new(5,5);   # 5x5 zero matrix
    # note that columns and rows are zero-based
    $matrix->set_col(0, [1..5])                 # set *first* column to 1,2,3,4,5
           ->set_row(2, [5..9]);                # set *third* column to 5,6,7,8,9
    my @matrix = $matrix->as_list;              # matrix as Perl list
    my $gsl_matrix = $matrix->raw;              # underlying GSL object

    use Math::GSL::RNG;
    my $rng = Math::GSL::RNG->new;
    my @random_numbers = $rng->get(1000);

    use Math::GSL::Deriv qw/:all/;
    my $function = sub { my $x=shift; sin($x**2) };
    my ($status,$val,$err) = gsl_deriv_central($function, 5, 0.01 );

    use Math::GSL qw/gsl_version/;
    # get a version object for the version of the underlying GSL library,
    # which will stringify to a version number
    my $gsl_version = gsl_version();

Each GSL subsystem has it's own module. For example, the random number generator subsystem is Math::GSL::RNG. Many subsystems have a more Perlish and object-oriented frontend which can be used, as the above example shows. The raw GSL object is useful for using the low-level GSL functions, which in the case of the Matrix subsytem, would be of the form gsl_matrix_* . Each module has further documentation about the low-level C functions as well as using the more intuitive (but slightly slower) object-oriented interface.

SUBSYSTEMS
Math::GSL::BLAS - Linear Algebra Functions

Math::GSL::BSpline - BSplines

Math::GSL::CBLAS - Linear Algebra Functions

Math::GSL::CDF - Cumulative Distribution Functions

Math::GSL::Chebyshev - Chebyshev Polynomials

Math::GSL::Combination - Combinatoric Functions

Math::GSL::Complex - Complex Numbers

Math::GSL::Const - Various Constants

Math::GSL::DHT - Discrete Hankel Transforms

Math::GSL::Deriv - Numerical Derivative

Math::GSL::Eigen - Eigenvalues and Eigenvectors

Math::GSL::Errno - Error Handling

Math::GSL::FFT - Fast Fourier Transform

Math::GSL::Fit - Curve Fitting

Math::GSL::Heapsort - Sorting Heaps

Math::GSL::Histogram - Histograms

Math::GSL::Histogram2D - 2D Histograms

Math::GSL::Integration - Numerical Integration

Math::GSL::Interp - Interpolation

Math::GSL::Linalg - Linear Algebra

Math::GSL::Machine - Machine Specific Information

Math::GSL::Matrix - NxM Matrices

Math::GSL::Min - Minimization

Math::GSL::Monte - Monte Carlo Integrations

Math::GSL::Multifit - Multivariable Fitting

Math::GSL::Multimin - Multivariable Minimization

Math::GSL::Multiroots - Muiltvariable Root Finding

Math::GSL::NTuple - N Tuples

Math::GSL::ODEIV - Ordinary Differential Equation Solvers (Initial Value Problems)

Math::GSL::Permutation - Permutations

Math::GSL::Poly - Polynmials

Math::GSL::PowInt - Integer Power Functions

Math::GSL::QRNG - Quasi-Random Number Generators

Math::GSL::RNG - Random Number Generators

Math::GSL::Randist - Random Number Distributions

Math::GSL::Roots - Root Finding Algorithms

Math::GSL::SF - Special Functions

Math::GSL::Siman - Simulated Annealing

Math::GSL::Sort - Sorting

Math::GSL::Spline - Splines

Math::GSL::Statistics - Statistics Functions

Math::GSL::Sum - Summation

Math::GSL::Sys - Sytem utility functions

Math::GSL::Vector - N-dimensional Vectors

Math::GSL::Wavelet - Basic Wavelets

Math::GSL::Wavelet2D - 2D Wavelets

AUTHORS
Jonathan "Duke" Leto, "<jonathan@leto.net>" and Thierry Moisan "<thierry.moisan@gmail.com>"

BUGS
This software is still in active development, we appreciate your detailed bug reports and documentation patches. Please report any bugs or feature requests to the authors directly.

COMPILING ISSUES
Some operating system configurations will make the compilation of Math::GSL fail. One common problem that happens on RedHat Linux (RHEL) and CentOS looks like this:

    Error:  Can't load '/usr/src/misc/perl-package/Math-GSL-0.20/blib/arch/auto/Math/GSL/Errno/Errno.so'
    for module Math::GSL::Errno: /usr/src/misc/perl-package/Math-GSL-0.20/blib/arch/auto/Math/GSL/Errno/Errno.so:
    cannot restore segment prot after reloc: Permission denied at /usr/lib/perl5/5.10.0/i386-linux-thread-multi/DynaLoader.pm line 203.
    #  at blib/lib/Math/GSL/Errno.pm line 10

This is due the the SE Linux setting being set to "enforcing". To Temporarily disable enforcement on a running system:

    /usr/sbin/setenforce 0

To permanently disable enforcement during a system startup change "enforcing" to "disabled" in ''/etc/selinux/config'' and reboot.

SUPPORT
You can find documentation for this module with the perldoc command.

    perldoc Math::GSL

or online at http://leto.net/code/Math-GSL/ <http://leto.net/code/Math-GSL/>

•   AnnoCPAN: Annotated CPAN documentation

    <http://annocpan.org/dist/Math::GSL>

•   CPAN Ratings

    <http://cpanratings.perl.org/d/Math::GSL>

•   Search CPAN

    <http://search.cpan.org/dist/Math::GSL>

DEVELOPMENT
If you would like the help develop Math::GSL, email the authors and do

    git clone git://github.com/leto/math--gsl.git
    cd math--gsl
    # start hacking

to get the latest source, which is a two-headed beast with branches master and bleed. The master branch is our stable branch, which is periodically sync-ed with bleed. To view the latest source code online, go to http://github.com/leto/math--gsl/tree/master <http://github.com/leto/math--gsl/tree/master>. The latest version of Git can be found at http://git-scm.com <http://git-scm.com> .

ACKNOWLEDGEMENTS
Thanks to PDX.pm, The Perl Foundation and everyone at Google who makes the Summer of Code happen each year. You rock.

DEDICATION
This Perl module is dedicated in memory of Nick Ing-Simmons.

COPYRIGHT & LICENSE
Copyright 2008-2010 Jonathan "Duke" Leto, Thierry Moisan all rights reserved.

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