As specified elsewhere (Section Constants), constants have the same value in all languages, unless specified otherwise.
The constants MPI_F_STATUS_IGNORE, MPI_F_STATUSES_IGNORE, MPI_F08_STATUS_IGNORE and MPI_F08_STATUSES_IGNORE are not specified in the C header file.
Rationale.
Users can obtain the addresses of Fortran sentinels by passing them as
arguments to a Fortran function call that is implemented in C.
( End of rationale.)