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Math::Base85(3) User Contributed Perl Documentation Math::Base85(3)
 

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>
Paul Cochrane <paul@liekut.de> (maintainer)

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.

perl(1).
2017-10-16 perl v5.28.1

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