plucky (3) MPI_Info_c2f.openmpi.3.gz

SYNTAX

   C Syntax
          #include <mpi.h>

          MPI_Comm MPI_Comm_f2c(MPI_Fint comm)
          MPI_Fint MPI_Comm_c2f(MPI_Comm comm)

          MPI_File MPI_File_f2c(MPI_Fint file)
          MPI_Fint MPI_File_c2f(MPI_File file)

          MPI_Group MPI_Group_f2c(MPI Fint group)
          MPI_Fint MPI_Group_c2f(MPI Group group)

          MPI_Info MPI_Info_f2c(MPI_Fint info)
          MPI_Fint MPI_Info_c2f(MPI_Info info)

          MPI_Message MPI_Message_f2c(MPI_Fint message)
          MPI_Fint MPI_Message_c2f(MPI_Message message)

          MPI_Op MPI_Op_f2c(MPI_Fint op)
          MPI_Fint MPI_Op_c2f(MPI_Op op)

          MPI_Request MPI_Request_f2c(MPI_Fint request)
          MPI_Fint MPI_Request_c2f(MPI_Request request)

          MPI_Datatype MPI_Type_f2c(MPI_Fint datatype)
          MPI_Fint MPI_Type_c2f(MPI_Datatype datatype)

          MPI_Win MPI_Win_f2c(MPI_Fint win)
          MPI_Fint MPI_Win_c2f(MPI_Win win)

DESCRIPTION

       Handles  are  passed between Fortran and C by using an explicit C wrapper to convert Fortran handles to C
       handles. There is no direct access to C handles in Fortran. The type definition MPI_Fint is provided in C
       for  an  integer of the size that matches a Fortran INTEGER; usually, MPI_Fint will be equivalent to int.
       The handle translation functions are provided in C to convert from a Fortran handle (which is an integer)
       to a C handle, and vice versa.

       For  example,  if  comm  is a valid Fortran handle to a communicator, then MPI_Comm_f2c returns a valid C
       handle to that same communicator; if comm = MPI_COMM_NULL (Fortran value), then  MPI_Comm_f2c  returns  a
       null C handle; if comm is an invalid Fortran handle, then MPI_Comm_f2c returns an invalid C handle.

NOTE

       This  function  does not return an error value. Consequently, the result of calling it before MPI_Init or
       after MPI_Finalize is undefined.

COPYRIGHT

       2003-2025, The Open MPI Community

                                                  Feb 17, 2025                                    MPI_WIN_F2C(3)