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Fri Mar 26 00:06:06 CET 2010 · https://mail.python.org/pipermail/python-dev/2010-March/098917.html

Steven D'Aprano <steve <at> pearwood.info> writes:
> 
> Personally, I'm less concerned about sets of floats ending up with 
> strange combinations of NANs than I am about the possibility of 
> disastrous maths errors caused by allowing NANs to test as equal. 
> Here's a simplistic example:

You just said "if you choose to use floats, then you need to understand that
NANs are weird". I wonder why this saying shouldn't apply to your "simplistic
example" of NAN usage.

(is your example even from real life?)

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[Python-Dev] Mixing float and Decimal -- thread reboot