Haversine distance

Just a simple gem to compute Haversine Distance in C

Usage

Add to your Gemfile:

gem 'haversine_c', '~> 0.0.2'

Then:

meters = HaversineDistance.m(point_a.lat,point_a.long,point_b.lat,point_b.long)
km = HaversineDistance.km(point_a.lat,point_a.long,point_b.lat,point_b.long)