MPI_SESSION_F2C(3)                 Open MPI                 MPI_SESSION_F2C(3)


MPI_Session_c2f, MPI_Session_f2c - Translates a C session handle into a
Fortran INTEGER-style session handle, or vice versa.

SYNTAX
   C Syntax

          #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)

PARAMETERS

       o f_session: mpi-style INTEGER MPI session object

       o c_session: C-style MPI session object

DESCRIPTION
       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.

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

COPYRIGHT
       2003-2024, The Open MPI Community

                                 April 8, 2024              MPI_SESSION_F2C(3)