Message 75510 - Python tracker

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Author	vstinner
Recipients	drj, mark.dickinson, vstinner
Date	2008-11-04.23:17:57
SpamBayes Score	0.0006250118
Marked as misclassified	No
Message-id	<1225840679.63.0.321401238701.issue3166@psf.upfronthosting.co.za>
In-reply-to

Content
You may use "if (nbits == (size_t)-1 && PyErr_Occurred())" to check _PyLong_NumBits() error (overflow). Well, "if (numbits > DBL_MAX_EXP)" should already catch overflow, but I prefer explicit test to check the error case. Anyway, interresting patch! Python3 vanilla: >>> n = 295147905179352891391; int(float(n)) - n -65535 Python3 + your patch: >>> int(float(n)) - n 1

You may use "if (nbits == (size_t)-1 && PyErr_Occurred())" to check 
_PyLong_NumBits() error (overflow). Well, "if (numbits > DBL_MAX_EXP)" 
should already catch overflow, but I prefer explicit test to check the 
error case.

Anyway, interresting patch! Python3 vanilla:
>>> n = 295147905179352891391; int(float(n)) - n
-65535

Python3 + your patch:
>>> int(float(n)) - n
1

History
Date	User	Action	Args
2008-11-04 23:17:59	vstinner	set	recipients: + vstinner, mark.dickinson, drj
2008-11-04 23:17:59	vstinner	set	messageid: <1225840679.63.0.321401238701.issue3166@psf.upfronthosting.co.za>
2008-11-04 23:17:58	vstinner	link	issue3166 messages
2008-11-04 23:17:57	vstinner	create