The two sections below detail the extensions to standard Fortran that are implemented in GNU Fortran, as well as some of the popular or historically important extensions that are not (or not yet) implemented. For the latter case, we explain the alternatives available to GNU Fortran users, including replacement by standard-conforming code or GNU extensions.
| • Extensions implemented in GNU Fortran: | ||
| • Extensions not implemented in GNU Fortran: |
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https://gcc.gnu.org/onlinedocs/gcc-7.2.0/gfortran/Extensions.html