1Algorithm::CheckDigits:U:sMe1r1_C0o1n6t(r3i)buted Perl DAolcguomreintthamt:i:oCnheckDigits::M11_016(3)
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NAME

6       CheckDigits::M11_016 - compute check digits vor VAT Registration Number
7       (PL)
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SYNOPSIS

10         use Algorithm::CheckDigits;
11
12         $nip = CheckDigits('nip');
13
14         if ($nip->is_valid('8567346215')) {
15               # do something
16         }
17
18         $cn = $nip->complete('856734621');
19         # $cn = '8567346215'
20
21         $cd = $nip->checkdigit('856734621');
22         # $cd = '5'
23
24         $bn = $nip->basenumber('8567346215');
25         # $bn = '856734621';
26

DESCRIPTION

28   ALGORITHM
29       1.  Beginning left every digit is weighted with 6, 5, 7, 2, 3, 4, 5, 6,
30           7
31
32       2.  The weighted digits are added.
33
34       3.  The sum from step 2 is taken modulo 11.
35
36       4.  The checkdigit is 11 minus the sum from step 3. Is the difference
37           10, the number won't be taken. If the difference is 11, the
38           checkdigit is 0.
39
40   METHODS
41       is_valid($number)
42           Returns true only if $number consists solely of numbers and the
43           rightmost digit is a valid check digit according to the algorithm
44           given above.
45
46           Returns false otherwise,
47
48       complete($number)
49           The check digit for $number is computed and appended to the end of
50           $number.
51
52           Returns the complete number with check digit or '' if $number does
53           not consist solely of digits, hyphens and spaces.
54
55       basenumber($number)
56           Returns the basenumber of $number if $number has a valid check
57           digit.
58
59           Return '' otherwise.
60
61       checkdigit($number)
62           Returns the check digits of $number if $number has valid check
63           digits.
64
65           Return '' otherwise.
66
67   EXPORT
68       None by default.
69

AUTHOR

71       Mathias Weidner, "<mamawe@cpan.org>"
72

SEE ALSO

74       perl, CheckDigits, www.pruefziffernberechnung.de,
75       http://www.pruefziffernberechnung.de/U/USt-IdNr.shtml#PZPL (German),
76       http://wipos.p.lodz.pl/zylla/ut/translation.html#PZPL (English),
77       http://wipos.p.lodz.pl/zylla/ut/nip-rego.html (Polish)
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81perl v5.28.0                      2018-07-14Algorithm::CheckDigits::M11_016(3)
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