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Alberto Manuel Brandão Simões >
Math-GSL >
Math::GSL::PowInt

Math::GSL::PowInt - Integer Power functions

use Math::GSL::PowInt qw /gsl_pow_2 gsl_pow_4 gsl_pow_int/; print '2**4 = ' . gsl_pow_2(4) . "\n"; print '4**7 = ' . gsl_pow_4(7) . "\n"; print '17**5 = ' . gsl_pow_int(17,5) . "\n";

This module implements the GSL Integer Power functions, which allow one to quickly compute a given integer raised to any real number. It contains gsl_pow_2 to gsl_pow_9 and gsl_pow_int. If you need a power higher than 9, you can use gsl_pow_int, which takes a base as the first argument and power being raised to as the second argument.

You can also write

`use Math::GSL::PowInt qw/:all/;`

to use all avaible functions of the module.

This module is used to speed up arithmetic operations. The underlying code decomposes the multiplication in the most efficient way. Since it is implemented in XS (via SWIG), it should lend a large performance increase over the Perl builtin exponentiation operator, '**' .

Would someone like to submit some benchmarks?

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

Copyright (C) 2008-2011 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.

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