Function pgx_pg_sys::array_get_element

pub unsafe fn array_get_element(
    arg_arraydatum: Datum, 
    arg_nSubscripts: c_int, 
    arg_indx: *mut c_int, 
    arg_arraytyplen: c_int, 
    arg_elmlen: c_int, 
    arg_elmbyval: bool, 
    arg_elmalign: c_char, 
    arg_isNull: *mut bool
) -> Datum