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Showing content from https://mail.python.org/pipermail/python-dev/2009-November/093522.html below:

[Python-Dev] Integer behaviour in Python 2.6.4

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Curt Hagenlocher skrev:
> Does that not happen on non-Windows platforms? 2**31 can't be
> represented as a 32-bit signed integer, so it's automatically promoted
> to a long.
>
>   
Yes you are right.

I've now traced down the problem to an integer overflow in NumPy.

It seems to have this Pyrex code:

cdef long lo, hi, diff
[...]
diff = hi - lo - 1

:-D


Sturla

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