This is a C library to check the validity of German and Austrian Bank Account Numbers. All currently defined test methods by Deutsche Bundesbank (March 2014: 00 to E1) are implemented. Modules for AWK, Perl, PHP, Python, Ruby, C#.net and VB.net are included too.
The package includes also an IBAN converter to generate (german) IBANs and BICs from account data. All currently defined IBAN rules by Deutsche Bundesbank are implemented (Sep 2013: 54 rules) and tested against independent sources.