lonlat bngA multithreaded Rust library with FFI for converting WGS84 longitude and latitude coordinates into BNG (OSGB36) Eastings and Northings and vice versa (using OSTN15)
convertbngFast, accurate WGS84 longitude and latitude ⬅️➡️ OSGB36 (OSTN15) conversion, using Python and Rust