Math::Base85 (3pm)

  use Math::Base85;

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

\s-1RFC\s0 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 \s-1RFC\s0 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.)

Parameters

A string composed of valid base 85 digits.

Returns

A \*(C`Math::BigInt\*(C' object representing the number.

Parameters

A \*(C`Math::BigInt\*(C' object.

Returns

A string of base 85 digits representing the number.

Tony Monroe <[email protected]>

perl\|(1).