debian man page for algorithm::checkdigits::m23_002

Query: algorithm::checkdigits::m23_002

OS: debian

Section: 3pm

Format: Original Unix Latex Style Formatted with HTML and a Horizontal Scroll Bar

CheckDigits::M23_002(3pm)				User Contributed Perl Documentation				 CheckDigits::M23_002(3pm)

NAME
CheckDigits::M23_002 - compute check digits for VAT Registration Number (IE)
SYNOPSIS
use Algorithm::CheckDigits; $dni = CheckDigits('ustid_ie'); if ($dni->is_valid('8473625E')) { # do something } $cn = $dni->complete('8473625'); # $cn = '8473625E' $cd = $dni->checkdigit('8473625E'); # $cd = 'E' $bn = $dni->basenumber('8473625E'); # $bn = '8473625'
DESCRIPTION
ALGORITHM 1. Beginning right all digits are weighted with their position in the number (i.e. the number left from the check digit is multiplied with 2, the next with 3 and so on). 2. All products are added. 3. The check digit is the sum from step 2 modulo 23. This number is expressed as the corresponding letter from the alphabet where A-V correspond to 1-22 and W stands for check digit 0. METHODS is_valid($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 v5.10.0 2008-05-17 CheckDigits::M23_002(3pm)
Related Man Pages
algorithm::checkdigits::m10_008(3pm) - debian
algorithm::checkdigits::m09_001(3pm) - debian
algorithm::checkdigits::m10_006(3pm) - debian
algorithm::checkdigits::m23_001(3pm) - debian
algorithm::checkdigits::m89_001(3pm) - debian
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