Math::Base85(3pm) User Contributed Perl Documentation Math::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.
AUTHORS
• Tony Monroe <tmonroe+perl@nog.net>
• Paul Cochrane <paul@liekut.de> (maintainer)
COPYRIGHT AND LICENSE
Copyright (c) 2001-2002, Tony Monroe <tmonroe+perl@nog.net>. All rights
reserved. Copyright (c) 2017, Paul Cochrane <paul@liekut.de>. All
rights reserved.
You may use this software under the same terms as Perl itself.
SEE ALSO
perl(1).
perl v5.32.0 2020-12-18 Math::Base85(3pm)
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