[issue1481296] long(float('nan'))!=0L
Mark Dickinson
report at bugs.python.org
Mon Jul 21 23:56:37 CEST 2008
Mark Dickinson <dickinsm at gmail.com> added the comment:
I still think this is the wrong solution, and should be fixed before 2.6;
long(float('nan')) should raise ValueError. As Alexander points out,
this fits much better with the IEEE 754 standard, and also with the C99
standard. It also just "feels right", to me; an attempt to convert a nan
to an integer should not pass silently.
Here's a patch, based on Ronald's original patch.
Christian, what was the motivation for returning 0 here?
(One could also argue on the basis of IEEE 754 and C99 that
long(float('inf')) should raise ValueError instead of OverflowError;
personally, I'm content that long(float('inf')) raises an exception---I'm
not too bothered which one.)
I agree that there doesn't seem much value in backporting the fix.
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keywords: +patch
Added file: http://bugs.python.org/file10957/issue1481296.patch
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