NAME

       Math::GSL::Sys - Misc Math Functions

SYNOPSIS

           use Math::GSL::Sys qw/:all/;

DESCRIPTION

       This module contains various useful math functions that are not usually provided by standard libraries.

       •   gsl_log1p($x)

           This function computes the value of \log(1+$x) in a way that is accurate for small $x. It provides an
           alternative to the BSD math function log1p(x).

       •   gsl_expm1($x)

           This function computes the value of \exp($x)-1 in a way that is accurate for small $x. It provides an
           alternative to the BSD math function expm1(x).

       •   "gsl_hypot($x, $y)"

           This  function computes the value of \sqrt{$x^2 + $y^2} in a way that avoids overflow. It provides an
           alternative to the BSD math function hypot($x,$y).

       •   "gsl_hypot3($x, $y, $z)"

           This function computes the value of \sqrt{$x^2 + $y^2 + $z^2} in a way that avoids overflow.

       •   gsl_acosh($x)

           This function computes the value of \arccosh($x). It provides an alternative  to  the  standard  math
           function acosh($x).

       •   gsl_asinh($x)

           This  function  computes  the  value of \arcsinh($x). It provides an alternative to the standard math
           function asinh($x).

       •   gsl_atanh($x)

           This function computes the value of \arctanh($x). It provides an alternative  to  the  standard  math
           function atanh($x).

       •   gsl_isnan($x)

           This function returns 1 if $x is not-a-number.

       •   gsl_isinf($x)

           This function returns +1 if $x is positive infinity, -1 if $x is negative infinity and 0 otherwise.

       •   gsl_finite($x)

           This function returns 1 if $x is a real number, and 0 if it is infinite or not-a-number.

       •   "gsl_posinf "

       •   "gsl_neginf "

       •   "gsl_fdiv "

       •   "gsl_coerce_double "

       •   "gsl_coerce_float "

       •   "gsl_coerce_long_double "

       •   "gsl_ldexp($x, $e)"

           This  function  computes  the  value  of  $x * 2**$e. It provides an alternative to the standard math
           function ldexp($x,$e).

       •   gsl_frexp($x)

           This function splits the number $x into its normalized fraction f and exponent e, such that $x = f  *
           2^e  and 0.5 <= f < 1. The function returns f and then the exponent in e. If $x is zero, both f and e
           are set to zero. This function provides an alternative to the standard math function frexp(x, e).

       •   "gsl_fcmp($x, $y, $epsilon)"

           This function determines whether $x and $y are approximately equal to a relative  accuracy  $epsilon.
           The relative accuracy is measured using an interval of size 2 \delta, where \delta = 2^k \epsilon and
           k  is  the  maximum  base-2 exponent of $x and $y as computed by the function frexp. If $x and $y lie
           within this interval, they are considered approximately equal and the function returns  0.  Otherwise
           if  $x < $y, the function returns -1, or if $x > $y, the function returns +1. Note that $x and $y are
           compared to relative accuracy, so this function is not  suitable  for  testing  whether  a  value  is
           approximately zero. The implementation is based on the package fcmp by T.C. Belding.

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

AUTHORS

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

COPYRIGHT AND LICENSE

       Copyright (C) 2008-2023 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.

perl v5.38.2                                       2024-03-31                                Math::GSL::Sys(3pm)