debian man page for algorithm::checkdigits::m97_001

CheckDigits::M97_001(3pm)				User Contributed Perl Documentation				 CheckDigits::M97_001(3pm)

NAME
       CheckDigits::M97_001 - compute check digits for VAT Registration Number (BE)

SYNOPSIS
	 use Algorithm::CheckDigits;

	 $ustid = CheckDigits('ustid_be');

	 if ($ustid->is_valid('136695962')) {
	       # do something
	 }

	 $cn = $ustid->complete('1366959');
	 # $cn = '136695962'

	 $cd = $ustid->checkdigit('136695962');
	 # $cd = '62'

	 $bn = $ustid->basenumber('136695962');
	 # $bn = '1366959'

DESCRIPTION
   ALGORITHM
       1.  The whole number (without checksum) is taken modulo 97.

       2.  The checksum is difference of the remainder from step 1 to 97.

   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 checkdigits 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::M97_001(3pm)