Function mpi::ffi::PMPI_Sendrecv

pub unsafe extern fn PMPI_Sendrecv(sendbuf: *const c_void,
                                   sendcount: c_int,
                                   sendtype: MPI_Datatype,
                                   dest: c_int,
                                   sendtag: c_int,
                                   recvbuf: *mut c_void,
                                   recvcount: c_int,
                                   recvtype: MPI_Datatype,
                                   source: c_int,
                                   recvtag: c_int,
                                   comm: MPI_Comm,
                                   status: *mut MPI_Status)
                                   -> c_int