1Algorithm::CheckDigits:U:sMe1r0_C0o0n1t(r3i)buted Perl DAolcguomreintthamt:i:oCnheckDigits::M10_001(3)
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3
4

NAME

6       CheckDigits::M10_001 - compute check digits for Bahncard (DE), IMEI,
7       IMEISV, ISIN, Miles&More, Payback (DE), Personnummer (SE), Passport
8       (BR), Credit Cards, SSN (US), Samordningsnummer (SE), VAT RN (ES), VAT
9       RN (IT), VAT RN (SE), International Securities Identifikation Number
10       (ISIN), CUSIP
11

SYNOPSIS

13         use Algorithm::CheckDigits;
14
15         $visa = CheckDigits('visa');
16
17         if ($visa->is_valid('4111 1111 1111 1111')) {
18               # do something
19         }
20
21         $cn = $visa->complete('4111 1111 1111 111');
22         # $cn = '4111 1111 1111 1111'
23
24         $cd = $visa->checkdigit('4111 1111 1111 1111');
25         # $cd = '7'
26
27         $bn = $visa->basenumber('4111 1111 1111 1111');
28         # $bn = '4111 1111 1111 111'
29

DESCRIPTION

31   ALGORITHM
32       1.  Beginning right all numbers are weighted alternatively 1 and 2
33           (that is the check digit is weighted 1).
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35       2.  The total of the digits of all products is computed.
36
37       3.  The sum of step 3 ist taken modulo 10.
38
39       4.  The check digit is the difference between 10 and the number from
40           step 3.
41
42       To validate the total of the digits of all numbers inclusive check
43       digit taken modulo 10 must be 0.
44
45   METHODS
46       is_valid($number)
47           Returns true only if the last digit is a valid check digit
48           according to the algorithm given above.
49
50           Returns false otherwise,
51
52           If the checked number is of type CUSIP, the number must be exact 9
53           digits or letters long and must not have spaces in between.
54
55       complete($number)
56           The check digit for $number is computed and concatenated to the end
57           of $number.
58
59           Returns the complete number with check digit or '' if $number does
60           not consist solely of digits and spaces.
61
62       basenumber($number)
63           Returns the basenumber of $number if $number has a valid check
64           digit.
65
66           Return '' otherwise.
67
68       checkdigit($number)
69           Returns the checkdigit of $number if $number has a valid check
70           digit.
71
72           Return '' otherwise.
73
74   EXPORT
75       None by default.
76

AUTHOR

78       Mathias Weidner, "<mamawe@cpan.org>"
79

SEE ALSO

81       perl, Algorithm::CheckDigits, www.pruefziffernberechnung.de.
82       http://en.wikipedia.org/wiki/CUSIP
83
84       For IMEI, IMEISV: ETSI Technical Specification TS 100 508 (v6.2.0)
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88perl v5.30.1                      2020-01-29Algorithm::CheckDigits::M10_001(3)
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