CheckDigits::M10_008 - compute check digits for Sedol (GB)
use Algorithm::CheckDigits; $sedol = CheckDigits('sedol'); if ($sedol->is_valid('0123457')) { # do something } $cn = $sedol->complete('012345'); # $cn = '0123457' $cd = $sedol->checkdigit('0123457'); # $cd = '7' $bn = $sedol->basenumber('0123457'); # $bn = '012345'
Beginning left all numbers are weighted with 1,3,1,7,3,9 and 1 (checkdigit)
The sum of all products is computed.
The check digit is the difference of the sum from step 3 to the next multiple of 10.
Returns true only if $number consists solely of numbers and the last digit is a valid check digit according to the algorithm given above.
$number
Returns false otherwise,
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.
Returns the basenumber of $number if $number has a valid check digit.
Return '' otherwise.
Returns the checkdigit of $number if $number has a valid check digit.
None by default.
Mathias Weidner, <mathias@weidner.in-bad-schmiedeberg.de>
perl, CheckDigits, www.pruefziffernberechnung.de.
To install Algorithm::CheckDigits, copy and paste the appropriate command in to your terminal.
cpanm
cpanm Algorithm::CheckDigits
CPAN shell
perl -MCPAN -e shell install Algorithm::CheckDigits
For more information on module installation, please visit the detailed CPAN module installation guide.