C code to convert from National Grid Reference to Latitude and Longitude
This code is a conversion into C of the javascript written by Chris Veness
Ordnance Survey Grid Reference functions (c) Chris Veness 2005-2012
Converted from the original Javascript into C by Jennifer Liddle jennifer@jsquared.co.uk
You are welcome to re-use these scripts under a creative commons license, http://creativecommons.org/licenses/by/3.0/ without any warranty express or implied, provided solely that you retain this copyright notice and links.