This is a library to solve geodesic problems on an ellipsoid model of the earth.
Note that this library is incorporated into PROJ, and for many people using the geodesic routines via PROJ may be more convenient.
Licensed under the MIT/X11 License; see LICENSE.txt.
The algorithms are documented in
- C. F. F. Karney, Algorithms for geodesics, J. Geodesy 87(1), 43–55 (2013); Addenda.
- Library documentation: https://geographiclib.sourceforge.io/C/doc
- Change log: https://geographiclib.sourceforge.io/C/doc/changes.html
- Git repository: https://github.com/geographiclib/geographiclib-c
Releases are tagged in git as, e.g.,
v1.52,v2.0, etc. - Source distribution: https://sourceforge.net/projects/geographiclib/files/distrib-C
- GeographicLib: https://geographiclib.sourceforge.io
- Author: Charles Karney, charles@karney.com