hamming, an Octave code which implements some simple versions of Hamming codes which can detect and correct errors in data.
The computer code and data files described and made available on this web page are distributed under the MIT license
hamming is available in a MATLAB version and an Octave version.
bank, an Octave code which computes the check digit associated with a US Bank Routing Number check digit, or it reports whether a 9-digit code is actually valid.
rot13, an Octave code which enciphers a string using the ROT13 cipher for letters, and the ROT5 cipher for digits.
upc, an Octave code which determines the check digit for a Uniform Product Code (UPC) or report whether a given UPC is valid.