CheckDigits::M89_001(3User Contributed Perl DocumentatiCheckDigits::M89_001(3)NAME
CheckDigits::M89_001 - compute check digits for VAT Registration Number
(LU)
SYNOPSIS
use Algorithm::CheckDigits;
$ustid = CheckDigits('ustid_lu');
if ($ustid->is_valid('13669580')) {
# do something
}
$cn = $ustid->complete('136695');
# $cn = '13669580'
$cd = $ustid->checkdigit('13669580');
# $cd = '80'
$bn = $ustid->basenumber('13669580');
# $bn = '136695'
DESCRIPTION
ALGORITHM
1. The checksum is the whole number taken modulo 89.
METHODS
is_valid($number)
Returns true only if $number consists solely of numbers and the
last digit is a valid check digit according to the algorithm given
above.
Returns false otherwise,
complete($number)
The check digit for $number is computed and concatenated to the end
of $number.
Returns the complete number with check digit or '' if $number does
not consist solely of digits and spaces.
basenumber($number)
Returns the basenumber of $number if $number has a valid check
digit.
Return '' otherwise.
checkdigit($number)
Returns the checkdigit of $number if $number has a valid check
digit.
Return '' otherwise.
EXPORT
None by default.
AUTHOR
Mathias Weidner, <mathias@weidner.in-bad-schmiedeberg.de>
SEE ALSO
perl, CheckDigits, www.pruefziffernberechnung.de.
perl v5.14.1 2009-11-20 CheckDigits::M89_001(3)