def convert_timedelta_type(obj: dt.timedelta | np.timedelta64) -> float:
''' Convert any recognized timedelta value to floating point absolute
milliseconds.
Arg:
obj (object) : the object to convert
Returns:
float : milliseconds
'''
if isinstance(obj, dt.timedelta):
return obj.total_seconds() * 1000.
elif isinstance(obj, np.timedelta64):
return float(obj / NP_MS_DELTA)
