vincenty
Vincenty's formulae implementation in Erlang
usage
$ make
test
$ make test
typecheck
$ make typecheck
example
$ ./rebar3 shell
1> vincenty:distance({0.0, 0.0}, {0.0, 0.0}).
0.0
2> vincenty:distance({42.3541165, -71.0693514}, {40.7791472, -73.9680804}).
298.396186