[issue18842] Add float.is_finite is_nan is_infinite to match Decimal methods

[Christian Heimes]

Christian Heimes added the comment:

The code is already there so the patch is really small.

http://hg.python.org/cpython/annotate/5bc7b20dc04a/Objects/floatobject.c#l1046

I love my time machine. *g*

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keywords: +patch
nosy: +christian.heimes
Added file: http://bugs.python.org/file32089/float_is.patch

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