Function mpi::ffi::PMPI_Raccumulate

pub unsafe extern fn PMPI_Raccumulate(origin_addr: *const c_void,
                                      origin_count: c_int,
                                      origin_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