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Date: Wed, 30 Jan 2019 15:10:42 +0100
From: Szabolcs Nagy <>
Subject: Re: Possible Mistype in exp.c

* Alexander Monakov <> [2019-01-30 15:44:23 +0300]:
> On Wed, 30 Jan 2019, Szabolcs Nagy wrote:
> > for < 1 ulp the main trick is computing the result as x+y where x is
> > exact and y is inexact but much smaller than x in magnitude. (this is
> > the only way to get worst case error < 1 ulp with an fp operation that
> > does a rounding and at least one of the inputs is inexact.)
> As I recall this was covered in your GNU Cauldron presentation.
> Can you upload the slides of that talk to the GCC wiki?
> (I can help with adding your account to EditorGroup if needed
> or upload the slides on your behalf if you send me the pdf)

please upload it on my behalf if you can:
(that presentation did not go into algorithmic details though)

for others:

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