[Numpy-discussion] 0/0 == 0?

T J tjhnson at gmail.com
Thu Oct 2 19:02:32 EDT 2014


Hi, I'm using NumPy 1.8.2:

In [1]: np.array(0) / np.array(0)
Out[1]: 0

In [2]: np.array(0) / np.array(0.0)
Out[2]: nan

In [3]: np.array(0.0) / np.array(0)
                                                          Out[3]: nan

In [4]: np.array(0.0) / np.array(0.0)
Out[4]: nan


In [5]: 0/0
---------------------------------------------------------------------------
ZeroDivisionError                         Traceback (most recent call last)
<ipython-input-6-6549dea6d1ae> in <module>()
----> 1 0/0

ZeroDivisionError: integer division or modulo by zero



Out[1] seems odd. I get the right value in 1.8.1.  Was this fixed for 1.9.0?
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