Function mpi::ffi::PMPI_Rget_accumulate

pub unsafe extern fn PMPI_Rget_accumulate(origin_addr: *const c_void,
                                          origin_count: c_int,
                                          origin_datatype: MPI_Datatype,
                                          result_addr: *mut c_void,
                                          result_count: c_int,
                                          result_datatype: MPI_Datatype,
                                          target_rank: c_int,
                                          target_disp: MPI_Aint,
                                          target_count: c_int,
                                          target_datatype: MPI_Datatype,
                                          op: MPI_Op,
                                          win: MPI_Win,
                                          request: *mut MPI_Request)
                                          -> c_int