Function mpi::ffi::PMPI_Ireduce_scatter_block

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