Sys.i

   1 %module "Math::GSL::Sys"
   2
   3 %include "typemaps.i"
   4 %apply int *OUTPUT { int * e };
   5
   6 %{
   7     #include "gsl/gsl_sys.h"
   8 %}
   9 %include "gsl/gsl_sys.h"
  10 %perlcode %{
  11 our @EXPORT = qw();
  12 our @EXPORT_OK = qw/
  13                gsl_log1p
  14                gsl_expm1
  15                gsl_hypot
  16                gsl_hypot3
  17                gsl_acosh
  18                gsl_asinh
  19                gsl_atanh
  20                gsl_isnan
  21                gsl_isinf
  22                gsl_finite
  23                gsl_posinf
  24                gsl_neginf
  25                gsl_fdiv
  26                gsl_coerce_double
  27                gsl_coerce_float
  28                gsl_coerce_long_double
  29                gsl_ldexp
  30                gsl_frexp
  31                gsl_fcmp
  32              /;
  33
  34 our %EXPORT_TAGS = ( all => \@EXPORT_OK );
  35
  36 __END__
  37
  38 =head1 NAME
  39
  40 Math::GSL::Sys -
  41
  42 =head1 SYNOPSIS
  43
  44 use Math::GSL::Sys qw /:all/;
  45
  46 =head1 DESCRIPTION
  47
  48 Here is a list of all the functions in this module :
  49
  50 =over
  51
  52 =item * C<gsl_log1p($x)> - This function computes the value of \log(1+$x) in a way that is accurate for small $x. It provides an alternative to the BSD math function log1p(x).
  53 =item * C<gsl_expm1($x)> - This function computes the value of \exp($x)-1 in a way that is accurate for small $x. It provides an alternative to the BSD math function expm1(x).
  54
  55 =item * C<gsl_hypot($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,$y).
  56
  57 =item * C<gsl_hypot3($x, $y, $z)> - This function computes the value of \sqrt{$x^2 + $y^2 + $z^2} in a way that avoids overflow.
  58
  59 =item * C<gsl_acosh($x)> - This function computes the value of \arccosh($x). It provides an alternative to the standard math function acosh($x).
  60
  61 =item * C<gsl_asinh($x)> - This function computes the value of \arcsinh($x). It provides an alternative to the standard math function asinh($x).
  62
  63 =item * C<gsl_atanh($x)> - This function computes the value of \arctanh($x). It provides an alternative to the standard math function atanh($x).
  64
  65 =item * C<gsl_isnan($x)> - This function returns 1 if $x is not-a-number.
  66
  67 =item * C<gsl_isinf($x)> - This function returns +1 if $x is positive infinity, -1 if $x is negative infinity and 0 otherwise.
  68
  69 =item * C<gsl_finite($x)> - This function returns 1 if $x is a real number, and 0 if it is infinite or not-a-number.
  70
  71 =item * C<gsl_posinf >
  72
  73 =item * C<gsl_neginf >
  74
  75 =item * C<gsl_fdiv >
  76
  77 =item * C<gsl_coerce_double >
  78
  79 =item * C<gsl_coerce_float >
  80
  81 =item * C<gsl_coerce_long_double >
  82
  83 =item * C<gsl_ldexp($x, $e)> - This function computes the value of $x * 2**$e. It provides an alternative to the standard math function ldexp($x,$e).
  84
  85 =item * C<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 $x is zero, both f and e are set to zero. This function provides an alternative to the standard math function frexp(x, e).
  86
  87 =item * C<gsl_fcmp($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.
  88
  89 =back
  90
  91 For more informations on the functions, we refer you to the GSL offcial
  92 documentation: L<http://www.gnu.org/software/gsl/manual/html_node/>
  93
  94  Tip : search on google: site:http://www.gnu.org/software/gsl/manual/html_node/ name_of_the_function_you_want
  95
  96
  97 =head1 AUTHORS
  98
  99 Jonathan Leto <jonathan@leto.net> and Thierry Moisan <thierry.moisan@gmail.com>
 100
 101 =head1 COPYRIGHT AND LICENSE
 102
 103 Copyright (C) 2008 Jonathan Leto and Thierry Moisan
 104
 105 This program is free software; you can redistribute it and/or modify it
 106 under the same terms as Perl itself.
 107
 108 =cut
 109
 110 %}