Function mpi::ffi::MPI_Alltoallw

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