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Tony Monroe >
Math-Base85-0.2 >
Math::Base85

Module Version: 0.2
Math::Base85 - Perl extension for base 85 numbers, as referenced by RFC 1924

use Math::Base85; $bigint = from_base85($number); $b85str = to_base85($bigint);

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.)

A string composed of valid base 85 digits.

A `Math::BigInt`

object representing the number.

A `Math::BigInt`

object.

A string of base 85 digits representing the number.

Tony Monroe <tmonroe+perl@nog.net>

perl(1).

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