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algorithm::checkdigits::m11_013(3pm) [debian man page]

CheckDigits::M11_013(3pm)				User Contributed Perl Documentation				 CheckDigits::M11_013(3pm)

NAME

       CheckDigits::M11_013 - compute check digits for VAT Registration Number (GR)

SYNOPSIS

	 use Algorithm::CheckDigits;

	 $ustid = CheckDigits('ustid_gr');

	 if ($ustid->is_valid('123456783')) {
	       # do something
	 }

	 $cn = $ustid->complete('12345678');
	 # $cn = '123456783'

	 $cd = $ustid->checkdigit('123456783');
	 # $cd = '3'

	 $bn = $ustid->basenumber('123456783');
	 # $bn = '12345678';

DESCRIPTION

   ALGORITHM
       1.  Beginning right with the digit before the checkdigit all digits are weighted with 2 ** position. I. e. the last digit is multiplied
	   with 2, the next with 4, then 8 and so on.

       2.  The weighted digits are added.

       3.  The sum from step 2 is taken modulo 11.

       4.  If the sum from step 3 is greater than 9, the check sum is 0 else it is the sum itself.

   METHODS
       is_valid($number)
	   Returns true only if $number consists solely of numbers and hyphens and the two digits in the middle are valid check digits according
	   to the algorithm given above.

	   Returns false otherwise,

       complete($number)
	   The check digit for $number is computed and inserted into the middle of $number.

	   Returns the complete number with check digit or '' if $number does not consist solely of digits, hyphens and spaces.

       basenumber($number)
	   Returns the basenumber of $number if $number has a valid check digit.

	   Return '' otherwise.

       checkdigit($number)
	   Returns the check digits of $number if $number has valid check digits.

	   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::M11_013(3pm)

Check Out this Related Man Page

CheckDigits::M11_009(3pm)				User Contributed Perl Documentation				 CheckDigits::M11_009(3pm)

NAME

       CheckDigits::M11_009 - compute check digits NRIC (SG)

SYNOPSIS

	 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';

DESCRIPTION

   ALGORITHM
       1.  Beginning left every digit is weighted with 2, 7, 6, 5, 4, 3, 2

       2.  The weighted digits are added.

       3.  The sum from step 2 is taken modulo 11.

       4.  The checkdigit is 11 minus the sum from step 3 converted to a character according to the following table:

	     @cd = ('','A','B','C','D','E','F','G','H','I','Z','J', );

   METHODS
       is_valid($number)
	   Returns true only if $number consists solely of numbers and hyphens and the two digits in the middle are valid check digits according
	   to the algorithm given above.

	   Returns false otherwise,

       complete($number)
	   The check digit for $number is computed and inserted into the middle of $number.

	   Returns the complete number with check digit or '' if $number does not consist solely of digits, hyphens and spaces.

       basenumber($number)
	   Returns the basenumber of $number if $number has a valid check digit.

	   Return '' otherwise.

       checkdigit($number)
	   Returns '' if $number is valid.

	   Return undef 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::M11_009(3pm)
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