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