## 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.