table of contents
| Algorithm::CheckDigits::M11_010(3pm) | User Contributed Perl Documentation | Algorithm::CheckDigits::M11_010(3pm) |
NAME¶
CheckDigits::M11_010 - compute check digits AHV number (CH)
SYNOPSIS¶
use Algorithm::CheckDigits;
$ahv = CheckDigits('ahv_ch');
if ($ahv->is_valid('123.45.678.113')) {
# do something
}
$cn = $ahv->complete('123.45.678.11');
# $cn = '123.45.678.113'
$cd = $ahv->checkdigit('123.45.678.113');
# $cd = '3'
$bn = $ahv->basenumber('123.45.678.113');
# $bn = '123.45.678.11';
DESCRIPTION¶
ALGORITHM¶
- 1.
- Beginning left every digit is weighted with 5,4,3,2,7,6,5,4,3,2.
- 2.
- The weighted digits are added.
- 3.
- The sum from step 2 is taken modulo 11.
- 4.
- The checkdigit is 11 minus the sum from step 3. Is the difference 10, the number won't be taken. If the difference is 11, the checkdigit is 0.
METHODS¶
- is_valid($number)
- Returns true only if $number consists solely of
numbers and dots and the rightmost digit is a valid check digit according
to the algorithm given above.
Returns false otherwise,
- complete($number)
- The check digit for $number is computed and
appended the end of $number.
Returns the complete number with check digit or '' if $number does not consist solely of digits and dots.
- basenumber($number)
- Returns the basenumber of $number if
$number has a valid check digit.
Return '' otherwise.
- checkdigit($number)
- Returns the check digits of $number if
$number has valid check digits.
Return '' otherwise.
EXPORT¶
None by default.
AUTHOR¶
Mathias Weidner, "<mamawe@cpan.org>"
SEE ALSO¶
perl, CheckDigits, www.pruefziffernberechnung.de,
| 2021-11-17 | perl v5.40.0 |