On 07/08/2014 12:04 PM, Anders J. Munch wrote:
Ethan Furman skrev:

What exception? Apparently your claims about NaN in Python are all wrong -- 
have you been using a custom interpreter?
>>> float('inf') - float('inf')
nan

If you deliberately try to manufacture NaN's, you can. I never said otherwise.

What you said is: "They just don't appear in normal computation, because the
interpreter raises an exception instead."

I just ran a calculation that created a NaN, the same as 4 - 3 creates a 1, and 
no exception was raised.

Do you have an example where one is?

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~Ethan~
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