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Date:      Tue, 14 Dec 2021 15:47:17 -0700
From:      Warner Losh <imp@bsdimp.com>
To:        Mark Murray <markm@freebsd.org>
Cc:        Steve Kargl <sgk@troutmask.apl.washington.edu>,  FreeBSD Hackers <freebsd-hackers@freebsd.org>, FreeBSD Current <freebsd-current@freebsd.org>
Subject:   Re: What to do about tgammal?
Message-ID:  <CANCZdfqgAa76jYGOV8RcqRRacdk-GXUzk-cmS8H45mRAE_=PUw@mail.gmail.com>
In-Reply-To: <F63407DF-B7CF-4C7B-86AB-1D99EB6C6FC7@FreeBSD.org>
References:  <20211204185352.GA20452@troutmask.apl.washington.edu> <E5711C71-1095-4B6B-A33A-4CDFF123AB62@FreeBSD.org> <20211213022223.GA41440@troutmask.apl.washington.edu> <813F29E3-8478-4282-9518-5943DE7B5492@FreeBSD.org> <20211214215106.GA50381@troutmask.apl.washington.edu> <F63407DF-B7CF-4C7B-86AB-1D99EB6C6FC7@FreeBSD.org>

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On Tue, Dec 14, 2021 at 3:23 PM Mark Murray <markm@freebsd.org> wrote:

> On 14 Dec 2021, at 21:51, Steve Kargl <sgk@troutmask.apl.washington.edu>
> wrote:
> > Interval          max ULP          x at Max ULP
> > [6,1755.1]        0.873414 at 1.480588145237629047468e+03
> > [1.0662,6]        0.861508 at 1.999467927053585410537e+00
> > [1.01e-17,1.0661] 0.938041 at 1.023286481537296307856e+00
> > [-1.9999,-1.0001] 3.157770 at -1.246957268051453610329e+00
> > [-2.9999,-2.0001] 2.987659 at -2.220949465449893090070e+00
> >
> > Note, 1.01e-17 can be reduced to soemthing like 1.01e-19 or
>
> Extra diffs most welcome!
>

Those results have allayed my fears. Is 1e-17 sufficient to commit these
changes, or do
we need to work to get it down to 1e-19 for it to be acceptable?

Warner

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