BUG: incorrect floored division of negative timedeltas #32522

import datetime as dt

import numpy as np

delta = np.timedelta64(-7, "us")
actual = int((delta // 2) / np.timedelta64(1, "us"))      # timedelta64 // int
via_timedelta = int(delta // np.timedelta64(2, "us"))  # timedelta64 // timedelta64
python = dt.timedelta(microseconds=-7) // 2 // dt.timedelta(microseconds=1)

print("expected (floor):        ", -4)
print("timedelta64 // int:      ", actual)
print("timedelta64 // timedelta:", via_timedelta)
print("int64 // int:            ", int(np.int64(-7) // 2), " python timedelta // int:", python)
assert actual == -4, "floor_divide truncated toward zero for timedelta64 // int"