1Algorithm::CheckDigits:U:sMeXrX_C0o0n4t(r3i)buted Perl DAolcguomreintthamt:i:oCnheckDigits::MXX_004(3)
2
3
4

NAME

6       CheckDigits::MXX_004 - compute check digits for VAT RN (AT)
7

SYNOPSIS

9         use Algorithm::CheckDigits;
10
11         $vat = CheckDigits('ustid_at');
12
13         if ($vat->is_valid('U13585627')) {
14               # do something
15         }
16
17         $cn = $vat->complete('U1358562');
18         # $cn = 'U13585627'
19
20         $cd = $vat->checkdigit('U13585627');
21         # $cd = '7'
22
23         $bn = $vat->basenumber('U13585627');
24         # $bn = 'U1358562'
25

DESCRIPTION

27   ALGORITHM
28       1.  Beginning right all numbers before the check digit are weighted
29           alternatively 1 and 2.
30
31       2.  The total of the digits of all products is computed and then
32           subtracted from 96.
33
34       3.  The check digit is the sum of step 3 taken modulo 10.
35
36   METHODS
37       is_valid($number)
38           Returns true only if $number consists solely of numbers and the
39           last digit is a valid check digit according to the algorithm given
40           above.
41
42           Returns false otherwise,
43
44       complete($number)
45           The check digit for $number is computed and concatenated to the end
46           of $number.
47
48           Returns the complete number with check digit or '' if $number does
49           not consist solely of digits and spaces.
50
51       basenumber($number)
52           Returns the basenumber of $number if $number has a valid check
53           digit.
54
55           Return '' otherwise.
56
57       checkdigit($number)
58           Returns the checkdigit of $number if $number has a valid check
59           digit.
60
61           Return '' otherwise.
62
63   EXPORT
64       None by default.
65

AUTHOR

67       Mathias Weidner, "<mamawe@cpan.org>"
68

SEE ALSO

70       perl, CheckDigits, www.pruefziffernberechnung.de.
71
72
73
74perl v5.30.0                      2019-07-26Algorithm::CheckDigits::MXX_004(3)
Impressum