Function mpi::ffi::PMPI_Neighbor_alltoallw

pub unsafe extern fn PMPI_Neighbor_alltoallw(sendbuf: *const c_void,
                                             sendcounts: *const c_int,
                                             sdispls: *const MPI_Aint,
                                             sendtypes: *const MPI_Datatype,
                                             recvbuf: *mut c_void,
                                             recvcounts: *const c_int,
                                             rdispls: *const MPI_Aint,
                                             recvtypes: *const MPI_Datatype,
                                             comm: MPI_Comm)
                                             -> c_int