Message 70623 - Python tracker

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In-reply-to
Author	mark.dickinson
Recipients	MrJean1, mark.dickinson, rhettinger, terry.reedy, tim.peters
Date	2008年08月02日.08:57:12
SpamBayes Score	0.001904452
Marked as misclassified	No
Message-id	<1217667434.47.0.770731192577.issue2819@psf.upfronthosting.co.za>

Content
> Question: I see "math module patch committed, r63542" in May 22. But in > 3.0b2, there is no math.fsum and math.sum seems to be a wrapper for > builtin sum. Has this not been forward ported (merged) yet? I'm pretty sure it was merged: math.sum should be the full-precision summation in both recent betas (2.6b2 and 3.0b2). Try comparing sum([1e100, 1, -1e100, -1]) and math.sum([1e100, 1, -1e100, -1])---they should produce -1.0 and 0.0 respectively. The name change to fsum only happened in the last few days.

Content

> Question: I see "math module patch committed, r63542" in May 22. But in
> 3.0b2, there is no math.fsum and math.sum seems to be a wrapper for
> builtin sum. Has this not been forward ported (merged) yet?
I'm pretty sure it *was* merged: math.sum should be the full-precision 
summation in both recent betas (2.6b2 and 3.0b2). Try comparing
sum([1e100, 1, -1e100, -1]) and math.sum([1e100, 1, -1e100, -1])---they 
should produce -1.0 and 0.0 respectively.
The name change to fsum only happened in the last few days.

History
Date	User	Action	Args
2008年08月02日 08:57:14	mark.dickinson	set	recipients: + mark.dickinson, tim.peters, rhettinger, terry.reedy, MrJean1
2008年08月02日 08:57:14	mark.dickinson	set	messageid: <1217667434.47.0.770731192577.issue2819@psf.upfronthosting.co.za>
2008年08月02日 08:57:13	mark.dickinson	link	issue2819 messages
2008年08月02日 08:57:12	mark.dickinson	create

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