C Syntax

       2003-2025, The Open MPI Community

                                                  Jun 07, 2025                                MPI_SESSION_F2C(3)

       These  two procedures are provided in C to convert from a Fortran session (which is an array of integers)
       to a C session (which is a structure), and vice versa. The conversion occurs on all  the  information  in
       session, including that which is hidden. That is, no session information is lost in the conversion.

       When  using MPI_Session_f2c(), if f_session is a valid Fortran session, then MPI_Session_f2c() returns in
       c_session a valid C session with the same content. If f_session is the Fortran value of MPI_SESSION_NULL,
       or if f_session is not a valid Fortran session, then the call is erroneous.

       When using MPI_Session_c2f(), the opposite conversion is applied. If c_session is MPI_SESSION_NULL, or if
       c_session is not a valid C session, then the call is erroneous.

       These functions are only available in C; they are not available in any of the Fortran MPI interfaces.

       • f_session: mpi-style INTEGER MPI session object

       • c_session: C-style MPI session object

CSyntax
          #include <mpi.h>

          int MPI_Session_f2c(const MPI_Fint *f_session, MPI_Session *c_session)
          int MPI_Session_c2f(const MPI_Session *c_session, MPI_Fint *f_session)