1CheckDigits::M11_010(3)User Contributed Perl DocumentatioCnheckDigits::M11_010(3)
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NAME

6       CheckDigits::M11_010 - compute check digits AHV number (CH)
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SYNOPSIS

9         use Algorithm::CheckDigits;
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11         $ahv = CheckDigits('ahv_ch');
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13         if ($ahv->is_valid('123.45.678.113')) {
14               # do something
15         }
16
17         $cn = $ahv->complete('123.45.678.11');
18         # $cn = '123.45.678.113'
19
20         $cd = $ahv->checkdigit('123.45.678.113');
21         # $cd = '3'
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23         $bn = $ahv->basenumber('123.45.678.113');
24         # $bn = '123.45.678.11';
25

DESCRIPTION

27   ALGORITHM
28       1.  Beginning left every digit is weighted with 5,4,3,2,7,6,5,4,3,2.
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30       2.  The weighted digits are added.
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32       3.  The sum from step 2 is taken modulo 11.
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34       4.  The checkdigit is 11 minus the sum from step 3. Is the difference
35           10, the number won't be taken. If the difference is 11, the
36           checkdigit is 0.
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38   METHODS
39       is_valid($number)
40           Returns true only if $number consists solely of numbers and dots
41           and the rightmost digit is a valid check digit according to the
42           algorithm given above.
43
44           Returns false otherwise,
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46       complete($number)
47           The check digit for $number is computed and appended the end of
48           $number.
49
50           Returns the complete number with check digit or '' if $number does
51           not consist solely of digits and dots.
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53       basenumber($number)
54           Returns the basenumber of $number if $number has a valid check
55           digit.
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57           Return '' otherwise.
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59       checkdigit($number)
60           Returns the check digits of $number if $number has valid check
61           digits.
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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, <mathias@weidner.in-bad-schmiedeberg.de>
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SEE ALSO

72       perl, CheckDigits, www.pruefziffernberechnung.de,
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76perl v5.12.1                      2009-11-20           CheckDigits::M11_010(3)
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