upc_code

upc_code, a C code which computes the check digit associated with a uniform product code (UPC), or reports whether a 12-digit UPC is valid.

Licensing:

The information on this web page is distributed under the MIT license.

Languages:

upc_code is available in a C version and a C++ version and a Fortran90 version and a MATLAB version and an Octave version and a Python version.

Related Data and Programs:

upc_code_test

bank_code, a C code which computes the check digit associated with a US Bank Routing Number check digit, reports whether a 9-digit code is valid.

isbn10_code, a C code which determines the check digit for a 10 digit International Standard Book Number (ISBN10) or reports whether a given ISBN10 is valid.

luhn_code, a C code which computes the Luhn check digit for a string, and validates a string.

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_code.c, the source code.
• upc_code.sh, compiles the source code.
• upc_code.h, the source code.