Closed
Description
arr = np.arange(5).astype("c8")
ser = pd.Series(arr)
val = np.finfo(np.float64).max
val = val.astype("c16")
>>> val
(1.7976931348623157e+308+0j)
ser[0] = val
>>> ser
0 inf+0.000000e+00j
1 1.000000e+00+0.000000e+00j
2 2.000000e+00+0.000000e+00j
3 3.000000e+00+0.000000e+00j
4 4.000000e+00+0.000000e+00j
dtype: complex64
For IntBlock we check the itemsize to avoid overflows, but for FloatBlock and ComplexBlock we do not, so we get the inf here. Should we instead be upcasting?