1Algorithm::CheckDigits:U:sMe1r0_C0o1n0t(r3i)buted Perl DAolcguomreintthamt:i:oCnheckDigits::M10_010(3)
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NAME

6       CheckDigits::M10_010 - compute check digits for Postscheckkonti (CH)
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SYNOPSIS

9         use Algorithm::CheckDigits;
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11         $pck = CheckDigits('postcheckkonti');
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13         if ($pck->is_valid('85-12345678-7')) {
14               # do something
15         }
16
17         $cn = $pck->complete('85-12345678');
18         # $cn = '85-12345678-7'
19
20         $cd = $pck->checkdigit('85-12345678-7');
21         # $cd = '7'
22
23         $bn = $pck->basenumber('85-12345678-7');
24         # $bn = '85-12345678'
25

DESCRIPTION

27   ALGORITHM
28       1.  The sequence of digits is processed left to right. For the first
29           digit we assume a carry forward of 0.
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31       2.  For each digit d(i) the carry forward cf(i) is the digit at the the
32           position p in the sequence ( 0, 9, 4, 6, 8, 2, 7, 1, 3, 5 ), where
33           p is (d(i) + cf(i-1)) modulo 10.
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35       3.  The check digit is the difference of the sum from step 3 to the
36           next multiple of 10.
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38   METHODS
39       is_valid($number)
40           Returns true only if $number consists solely of numbers and the
41           last digit is a valid check digit according to the algorithm given
42           above.
43
44           Returns false otherwise,
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46       complete($number)
47           The check digit for $number is computed and concatenated to the end
48           of $number.
49
50           Returns the complete number with check digit or '' if $number does
51           not consist solely of digits and spaces.
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53       basenumber($number)
54           Returns the basenumber of $number if $number has a valid check
55           digit.
56
57           Return '' otherwise.
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59       checkdigit($number)
60           Returns the checkdigit of $number if $number has a valid check
61           digit.
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63           Return '' otherwise.
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65   EXPORT
66       None by default.
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AUTHOR

69       Mathias Weidner, "<mamawe@cpan.org>"
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SEE ALSO

72       perl, CheckDigits, www.pruefziffernberechnung.de.
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76perl v5.32.1                      2021-01-26Algorithm::CheckDigits::M10_010(3)
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