Regexp::Common::_support(3)                User Contributed Perl Documentation


NAME
       Regexp::Common::support -- Support functions for Regexp::Common.

SYNOPSIS
           use Regexp::Common::_support qw /luhn/;

           luhn ($number)    # Returns true/false.

DESCRIPTION
       This module contains some subroutines to be used by other
       "Regexp::Common" modules. It's not intended to be used directly.
       Subroutines from the module may disappear without any notice, or their
       meaning or interface may change without notice.

       luhn
           This subroutine returns true if its argument passes the luhn
           checksum test.

SEE ALSO
       <http://www.webopedia.com/TERM/L/Luhn_formula.html>.

AUTHOR
       Abigail (regexp-common@abigail.be).

BUGS AND IRRITATIONS
       Bound to be plenty.

LICENSE and COPYRIGHT
       This software is Copyright (c) 2001 - 2017, Damian Conway and Abigail.

       This module is free software, and maybe used under any of the following
       licenses:

        1) The Perl Artistic License.     See the file COPYRIGHT.AL.
        2) The Perl Artistic License 2.0. See the file COPYRIGHT.AL2.
        3) The BSD License.               See the file COPYRIGHT.BSD.
        4) The MIT License.               See the file COPYRIGHT.MIT.

perl v5.38.0                      2023-07-25       Regexp::Common::_support(3)