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algorithm::checkdigits::mxx_001(3pm) [debian man page]

CheckDigits::MXX_001(3pm)				User Contributed Perl Documentation				 CheckDigits::MXX_001(3pm)

NAME

       CheckDigits::MXX_001 - compute check digits for PA (DE)

SYNOPSIS

	 use Algorithm::CheckDigits;

	 $pa = CheckDigits('pa_de');

	 if ($pa->is_valid('2406055684D<<6810203<0705109<6')) {
	       # do something
	 }

	 $cn = $pa->complete('240605568_D<<681020_<070510_<_');
	 # $cn = '2406055684D<<6810203<0705109<6'

	 $cd = $pa->checkdigit('2406055684D<<6810203<0705109<6');
	 # $cd = '6'

	 $bn = $pa->basenumber('2406055684D<<6810203<0705109<6');
	 # $bn = '240605568_D<<681020_<070510_<_'

DESCRIPTION

   ALGORITHM
       1.  Beginning left all digits are weighted with 7,3,1,7,3,1,...

       2.  The sum of those products is computed.

       3.  The checksum is the last digit of the sum from step 2 (modulo 10).

       4.  Step 1 to 3 is performed for every part of the number and for all 3 parts including the particular checkdigit to compute the total
	   checksum.

   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>

THANKS

       Aaron W. West pointed me to a fault in the computing of the check digit.

SEE ALSO

       perl, CheckDigits, www.pruefziffernberechnung.de, www.export911.com/e911/coding/upcChar.htm, www.adams1.com/pub/russadam/upccode.html,
       http://www.upcdatabase.com.

perl v5.10.0							    2008-05-17						 CheckDigits::MXX_001(3pm)

Check Out this Related Man Page

CheckDigits::MBase_001(3pm)				User Contributed Perl Documentation			       CheckDigits::MBase_001(3pm)

NAME

       CheckDigits::MBase_001 - compute check digits for UPC (US)

SYNOPSIS

	 use Algorithm::CheckDigits;

	 $rv = CheckDigits('upc');

	 if ($rv->is_valid('012345678905')) {
	       # do something
	 }

	 $cn = $rv->complete('01234567890');
	 # $cn = '012345678905'

	 $cd = $rv->checkdigit('012345678905');
	 # $cd = '5'

	 $bn = $rv->basenumber('012345678905');
	 # $bn = '01234567890'

DESCRIPTION

   ALGORITHM
       1.  Add all digits in odd-numbered positions.

       2.  Multiply the sum from step 1 with 3.

       3.  Add all digits in even-numbered positions.

       4.  Add the product from step 2 and the sum from step 3.

       5.  If the sum from step 4 is 0 modulo 10, the check digit is 0. Else the check digit is 10 minus the sum from step 4 taken modulo 10.

   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>

THANKS

       Aaron W. West pointed me to a fault in the computing of the check digit.

SEE ALSO

       perl, CheckDigits, www.pruefziffernberechnung.de, www.export911.com/e911/coding/upcChar.htm, www.adams1.com/pub/russadam/upccode.html,
       http://www.upcdatabase.com.

perl v5.10.0							    2008-05-17					       CheckDigits::MBase_001(3pm)
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