[PROJ] Geodesics on an arbitrary ellipsoid of revolution

[Charles Karney]

PROJ contains a C port of the geodesic routines in GeographicLib.  These
routines are valid for |f| < 1/50.

The C++ version of GeographicLib contains alternative versions of the
geodesic routines which work for just about any flattening, namely

   1/200 < b/a < 200

I just completed a paper describing these routines; it's available at

   http://arxiv.org/abs/2208.00492

I have no plans at this point to port these C++ routines into PROJ.

-- 
Charles Karney <charles at karney.com>
Princeton, NJ