geodesic(3) on Linux
The text 4224ca79f010, as Debian 9 (Stretch) shipped it.
initialize an ellipsoid geod_direct geod_gendirect - the direct geodesic problem geod_inverse geod_geninverse - the inverse geodesic problem geod_lineinit geod_directline geod_gendirectline geod_inverseline - initialize a geodesic line geod_setdistance geod_gensetdistance - set distance to reference point geod_position geod_genposition - a position on a geodesic line geod_polygon_init - initialize a polygon geod_addpoint geod_addedge - add to a polygon geod_polygon_compute geod_polygon_testpoint geod_polygon_testedge - compute properties of polygon geod_polygon_clear - clear polygon geod_polygonarea - the area of a polygon