Message 159966 - Python tracker

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In-reply-to
Author	mark.dickinson
Recipients	mark.dickinson, serhiy.storchaka, skrah
Date	2012年05月04日.19:39:33
SpamBayes Score	-1.0
Marked as misclassified	Yes
Message-id	<1336160374.25.0.0230621275131.issue14722@psf.upfronthosting.co.za>

Content
> But values that rounded to DBL_MAX can raise > OverflowError. In any case it's too difficult to achieve strict behavior > in this corner case. Well, PyLong_AsDouble does achieve strict behaviour in this corner case :-). Integers less than 0.5 * (sys.float_info.max + 2**1024) in absolute value give finite results; integers greater than or equal to that bound produce an OverflowError. > Take a look at the tests and may be you'll see the system. I don't see how looking at the tests helps with making a decision about breaking backwards compatibility or not. :-)

Content

> But values that rounded to DBL_MAX can raise
> OverflowError. In any case it's too difficult to achieve strict behavior
> in this corner case.
Well, PyLong_AsDouble *does* achieve strict behaviour in this corner case :-). Integers less than 0.5 * (sys.float_info.max + 2**1024) in absolute value give finite results; integers greater than or equal to that bound produce an OverflowError.
> Take a look at the tests and may be you'll see the system.
I don't see how looking at the tests helps with making a decision about breaking backwards compatibility or not. :-)

History
Date	User	Action	Args
2012年05月04日 19:39:34	mark.dickinson	set	recipients: + mark.dickinson, skrah, serhiy.storchaka
2012年05月04日 19:39:34	mark.dickinson	set	messageid: <1336160374.25.0.0230621275131.issue14722@psf.upfronthosting.co.za>
2012年05月04日 19:39:33	mark.dickinson	link	issue14722 messages
2012年05月04日 19:39:33	mark.dickinson	create

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