Function mpi::ffi::PMPI_Ireduce_scatter

pub unsafe extern fn PMPI_Ireduce_scatter(sendbuf: *const c_void,
                                          recvbuf: *mut c_void,
                                          recvcounts: *const c_int,
                                          datatype: MPI_Datatype,
                                          op: MPI_Op,
                                          comm: MPI_Comm,
                                          request: *mut MPI_Request)
                                          -> c_int