1Regexp::Common::_supporUts(e3r)Contributed Perl DocumentRaetgieoxnp::Common::_support(3)
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NAME

6       Regexp::Common::support -- Support functions for Regexp::Common.
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SYNOPSIS

9           use Regexp::Common::_support qw /luhn/;
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11           luhn ($number)    # Returns true/false.
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DESCRIPTION

14       This module contains some subroutines to be used by other
15       "Regexp::Common" modules. It's not intended to be used directly.
16       Subroutines from the module may disappear without any notice, or their
17       meaning or interface may change without notice.
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19       luhn
20           This subroutine returns true if its argument passes the luhn
21           checksum test.
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SEE ALSO

24       <http://www.webopedia.com/TERM/L/Luhn_formula.html>.
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AUTHOR

27       Abigail (regexp-common@abigail.be).
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BUGS AND IRRITATIONS

30       Bound to be plenty.
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33       This software is Copyright (c) 2001 - 2017, Damian Conway and Abigail.
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35       This module is free software, and maybe used under any of the following
36       licenses:
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38        1) The Perl Artistic License.     See the file COPYRIGHT.AL.
39        2) The Perl Artistic License 2.0. See the file COPYRIGHT.AL2.
40        3) The BSD License.               See the file COPYRIGHT.BSD.
41        4) The MIT License.               See the file COPYRIGHT.MIT.
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45perl v5.36.0                      2023-01-20       Regexp::Common::_support(3)
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