Python numpy:无法将datetime64[ns]转换为datetime64[D](与Numba一起使用)

I want to pass a datetime array to a Numba function (which cannot be vectorised and would otherwise be very slow). I understand Numba supports numpy.datetime64. However, it seems it supports datetime64[D] (day precision) but not datetime64[ns] (millisecond precision) (I learnt this the hard way: is it documented?).I want to pass a datetime array to a Numba func