This model driver is a C-based implementation of the three-body Environment Dependent Interatomic Potential (EDIP) developed by Martin Bazant and Efthemios Kaxiras and published in 1996, a bond-order potential primarily used to simulate a wide variety of structures and defects associated with silicon, carbon, and germanium. The implementation itself is based on version 1.1 of the C code published by Bazant on http://web.mit.edu/bazant/www/EDIP/index.html. All functional forms are evaluated analytically, i.e. no splines are used for evaluation.