Function mpi_sys::PMPI_Fetch_and_op

pub unsafe extern "C" fn PMPI_Fetch_and_op(
    origin_addr: *const c_void, 
    result_addr: *mut c_void, 
    datatype: MPI_Datatype, 
    target_rank: c_int, 
    target_disp: MPI_Aint, 
    op: MPI_Op, 
    win: MPI_Win
) -> c_int