CheckDigits::M11_009 - compute check digits NRIC (SG)
use Algorithm::CheckDigits; $nric = CheckDigits('nric_sg'); if ($nric->is_valid('S1234567D')) { # do something } $cn = $nric->complete('S1234567'); # $cn = 'S1234567D' $cd = $nric->checkdigit('S1234567D'); # $cd = 'D' $bn = $nric->basenumber('S1234567D'); # $bn = 'S1234567';
@cd = ('','A','B','C','D','E','F','G','H','I','Z','J', );
Returns true only if $number
consists of seven digits (optional preceded by a letter out of 'F', 'G', 'S', 'T') followed by a valid letter according to the algorithm given above.
Returns false otherwise,
The check letter for $number
is computed and appended to the end of $number
.
Returns the complete number with check digit or '' if $number
does not consist solely of digits and letters.
Returns the basenumber of $number
if $number
has a valid check digit.
Return '' otherwise.
Returns '' if $number
is valid.
Return undef otherwise.
None by default.
Mathias Weidner, <mamawe@cpan.org>
perl, CheckDigits, www.pruefziffernberechnung.de,