upc

upc, a C code which can compute the check digit associated with a uniform product code (UPC), or it can report whether a 12-digit UPC is actually valid.

Licensing:

The computer code and data files made available on this web page are distributed under the MIT license

Languages:

upc is available in a C version and a C++ version and a FORTRAN90 version and a MATLAB version and a Python version.

Related Data and Programs:

BANK, a C code which can compute the check digit associated with a US Bank Routing Number check digit, or it can report whether a 9-digit code is actually valid.

ISBN, a C code which can determine the check digit for an International Standard Book Number or report whether a given ISBN is valid.

LUHN, a C code which computes the Luhn check digit for a string, and can validate a string.

upc_test

Reference:

1. David Savir, George Laurer,
   The Characteristics and Decodability of the Universal Product Code,
   IBM Systems Journal,
   Volume 14, Number 1, pages 16-34, 1975.

Source Code:

• upc.c, the source code.
• upc.sh, compiles the source code.
• upc.h, the source code.