1CheckDigits::M10_009(3)User Contributed Perl DocumentatioCnheckDigits::M10_009(3)
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NAME

6       CheckDigits::M10_009 - compute check digits for Betriebsnummer (DE)
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SYNOPSIS

9         use Algorithm::CheckDigits;
10
11         $betrnr = CheckDigits('betriebsnummer');
12
13         if ($betrnr->is_valid('73282932000074')) {
14               # do something
15         }
16
17         $cn = $betrnr->complete('7328293200007');
18         # $cn = '73282932000074'
19
20         $cd = $betrnr->checkdigit('73282932000074');
21         # $cd = '4'
22
23         $bn = $betrnr->basenumber('73282932000074');
24         # $bn = '7328293200007'
25

DESCRIPTION

27   ALGORITHM
28       1.  Beginning left all numbers are weighted alternatively 1 and 2.
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30       2.  The total of the digits of all products is computed.
31
32       3.  The sum of step 3 ist taken modulo 10.
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34       4.  The check digit is the difference between 10 and the number from
35           step 3 taken modulo 10.
36
37           HINT: The last digit of the 'Betriebsnummer' may be the check digit
38           or the last digit of the sum of the constant 5 and the check digit.
39
40   METHODS
41       is_valid($number)
42           Returns true only if $number consists solely of numbers and the
43           last digit is a valid check digit according to the algorithm given
44           above.
45
46           Returns false otherwise,
47
48       complete($number)
49           The check digit for $number is computed and concatenated to the end
50           of $number.
51
52           Returns the complete number with check digit or '' if $number does
53           not consist solely of digits and spaces.
54
55       basenumber($number)
56           Returns the basenumber of $number if $number has a valid check
57           digit.
58
59           Return '' otherwise.
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61       checkdigit($number)
62           Returns the checkdigit of $number if $number has a valid check
63           digit.
64
65           Return '' otherwise.
66
67   EXPORT
68       None by default.
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AUTHOR

71       Mathias Weidner, <mathias@weidner.in-bad-schmiedeberg.de>
72

SEE ALSO

74       perl, CheckDigits, www.pruefziffernberechnung.de.
75       www.dsi.cnrs.fr/bureau_qualite/admindonnees/documents/siren.pdf
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79perl v5.12.1                      2009-11-20           CheckDigits::M10_009(3)
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