[Numpy-discussion] strange bug

Tim Hochberg tim.hochberg at cox.net
Tue Jun 20 07:28:28 CDT 2006


Johannes Loehnert wrote:

>Hi,
>
>  
>
>>## Output:
>>numpy.__version__:  0.9.8
>>y:  [ 0.  1.  2.  3.  4.  5.  6.  7.  8.  9.]
>>y**2:  [  0.   1.   4.   9.  16.  25.  36.  49.  64.  81.]
>>z:  [ 0.  1.  2.  3.  4.  5.  6.  7.  8.  9.]
>>z**2:  [  0.00000000e+00   1.00000000e+00   1.60000000e+01   8.10000000e+01
>>   2.56000000e+02   6.25000000e+02   1.29600000e+03   2.40100000e+03
>>   4.09600000e+03   6.56100000e+03]
>>    
>>
>
>obviosly the last is z**4. dtypes are the same for y and z (float64).
>  
>
I ran into this yesterday and fixed it. It should be OK in SVN now.

>One addition:
>
>In [5]: z = arange(10, dtype=float)
>
>In [6]: z **= 1
>
>In [7]: z
>zsh: 18263 segmentation fault  ipython
>  
>
This one is still there however. I'll look at it.

-tim


>
>- Johannes
>
>
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>  
>






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