Spherical Harmonics Transforms library

 ecTrans is the global spherical Harmonics transforms library,
 extracted from the IFS weather model from ECMWF.
 It uses a hybrid of MPI and OpenMP parallelisation strategies.
 The package contains both single- and double precision Fortran
 libraries (trans_sp, trans_dp), as well as a C interface to the
 double-precision version (transi_dp).
 ECMWF is the European Centre for Medium-Range Weather Forecasts.