math::base85(3pm) [debian man page]

Base85(3pm)						User Contributed Perl Documentation					       Base85(3pm)

NAME

       Math::Base85 - Perl extension for base 85 numbers, as referenced by RFC 1924

SYNOPSIS

	 use Math::Base85;

	 $bigint = from_base85($number);
	 $b85str = to_base85($bigint);

DESCRIPTION

       RFC 1924 describes a compact, fixed-size representation of IPv6 addresses which uses a base 85 number system.  This module handles some of
       the uglier details of it.

       The base 85 numbers (from 0 to 84) are as follows:

	   0..9 A..Z a..z ! # $ % & ( ) * + - ; < = > ? @ ^ _ ` { | } ~

       At the moment, there's not much in this module.	But it should be sufficient for the purposes of RFC 1924.

       This module has a variable called $Math::Base85::base85_digits, which is a string containing the digits of the base 85 alphabet from lowest(0) to highest (~), in that order.

       Additionally, the following two functions are defined for general use.  (They will be exported upon request.)

from_base85
   Parameters
       A string composed of valid base 85 digits.

   Returns
       A "Math::BigInt" object representing the number.

to_base85
   Parameters
       A "Math::BigInt" object.

   Returns
       A string of base 85 digits representing the number.

AUTHOR

       Tony Monroe <tmonroe+perl@nog.net>

SEE ALSO

       perl(1).

perl v5.12.4							    2002-08-06							       Base85(3pm)

Math::BigInt::FastCalc(3pm)				 Perl Programmers Reference Guide			       Math::BigInt::FastCalc(3pm)

NAME

       Math::BigInt::FastCalc - Math::BigInt::Calc with some XS for more speed

SYNOPSIS

       Provides support for big integer calculations. Not intended to be used by other modules. Other modules which sport the same functions can
       also be used to support Math::BigInt, like Math::BigInt::GMP or Math::BigInt::Pari.

DESCRIPTION

       In order to allow for multiple big integer libraries, Math::BigInt was rewritten to use library modules for core math routines. Any module
       which follows the same API as this can be used instead by using the following:

	       use Math::BigInt lib => 'libname';

       'libname' is either the long name ('Math::BigInt::Pari'), or only the short version like 'Pari'. To use this library:

	       use Math::BigInt lib => 'FastCalc';

       Note that from Math::BigInt v1.76 onwards, FastCalc will be loaded automatically, if possible.

STORAGE

       FastCalc works exactly like Calc, in stores the numbers in decimal form, chopped into parts.

METHODS

       The following functions are now implemented in FastCalc.xs:

	       _is_odd	       _is_even        _is_one	       _is_zero
	       _is_two	       _is_ten
	       _zero	       _one	       _two	       _ten
	       _acmp	       _len	       _num
	       _inc	       _dec
	       __strip_zeros   _copy

LICENSE

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

AUTHORS

       Original math code by Mark Biggar, rewritten by Tels <http://bloodgate.com/> in late 2000.  Seperated from BigInt and shaped API with the
       help of John Peacock.  Fixed, sped-up and enhanced by Tels http://bloodgate.com 2001-2003.  Further streamlining (api_version 1 etc.) by
       Tels 2004-2007.

SEE ALSO

       Math::BigInt, Math::BigFloat, Math::BigInt::GMP, Math::BigInt::FastCalc and Math::BigInt::Pari.

perl v5.12.1							    2010-04-26					       Math::BigInt::FastCalc(3pm)