Joined: 15 Oct 2005 Posts: 10 Location: Clemson, SC
I can probably figure it out but with all the credit card bank programmers out there, can anyone share their Luhn formula modulus 10 "double-add-double" routine for computing the Mod 10 check digit? My number will be 10 numeric characters including the check digit. The routine must be in COBOL. Any help is appreciated. Jacheter.