This is an implementation of XP-EHH, initially described in Sabeti et al. (2007) Genome-wide detection and characterization of positive selection in human populations (http://www.nature.com/nature/journal/v449/n7164/full/nature06250.html).

To compile (edit dist/src/Makefile for your machine if necessary):

git clone https://github.com/joepickrell/xpehh.git
cd xpehh/dist/src/
make