Contributed by bladx
on Sep 04, 2001 at 01:20 UTC
Q&A
> math
Description: Are there other modules other than the basic MATH module(s) that contain libraries of common equations, as to alleviate writing out each individual equation? Answer: How can I import previously created math functions? contributed by Zaxo PDL is an extension which gives high speed matrix operations, and more. It has been used a lot for graphics and for scientific computing.
Gsl is a yetincomplete extension which uses the Gnu Scientific Library (GSL). It is a wip, only in version 0.03. So far it has bindings for calculating special functions. I was unable to install it due to hardcoded paths which disagreed with my gsl tree.
 Answer: How can I import previously created math functions? contributed by ariels The amazing Inline module offers help here, too. Not all <math.h> functions are available in Perl (even if you use POSIX;).
Here's how to print some erf() values, for instance (a function almost certainly available in your maths library):
perl le 'use Inline C => q{ double erf(double); }, ENABLE => "AUTOWRA
+P"; print "$_ ",erf($_) for (0..5)'
You can of course write it into your modules, and use it to access you own libraries.
Other C wrapping options are XS (of course) and Swig.
 Answer: How can I import previously created math functions? contributed by randyk The
Math::Cephes module contains an interface to
math functions of Stephen Moshier's cephes
math library. Interfaces are also included to
handle some common
polynomial,
matrix,
fraction, and
complex number operations. 
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