[SciPy-user] possible to get INF in divide by zero ?
Fri Aug 29 14:29:11 CDT 2008
Fri, 29 Aug 2008 12:23:33 +0000, Pauli Virtanen wrote:
> Thu, 28 Aug 2008 09:56:36 +0200, Stef Mientki wrote:
>> another observation:
>> >>> a=numpy.array([2,3])
>> >>> a/0
>> array([0, 0])
> Division in Numpy preserves the data types: in this case you have an
> integer array divided by an integer, so the output is also an integer.
> But Inf is not one of integers so something must be substituted; and it
> is zero. There probably was some reason for this choice...
Matlab substitutes MAXINT here:
>> x = zeros([2,2],'int32')
I don't know the rationale behind the choice 0 in Numpy...
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