From: Szabolcs Nagy <nsz@port70.net>
To: musl@lists.openwall.com
Cc: Damian McGuckin <damianm@esi.com.au>
Subject: Re: Possible Mistype in exp.c
Date: Wed, 30 Jan 2019 10:37:38 +0100 [thread overview]
Message-ID: <20190130093738.GE21289@port70.net> (raw)
In-Reply-To: <alpine.LRH.2.02.1901301214230.828@key0.esi.com.au>
* Damian McGuckin <damianm@esi.com.au> [2019-01-30 12:18:54 +1100]:
> On Tue, 29 Jan 2019, Szabolcs Nagy wrote:
>
> > > > https://www.openwall.com/lists/musl/2018/12/08/1
>
> For some reason I missed this on the list.
>
> You were certainly busy integrating this.
>
> Is there any documentation on the Remez polynomials and the associated
> argument reductions done? Or is it a case of 'read the code'. ARM have
> certainly done a lot of work. It will be really interesting when that CPU
> gets a lot closer to the high end Xeon.
i work at arm and i did this work there so i know the background.
there is not much published about the algorithms (although there aren't
many new ideas in the code, it's mostly about optimizing for modern cpus),
but i plan to at least put the polynomial and lookup table generation
code in that repo.
the polynomial coefficients were generated with the sollya tool from
inria.
next prev parent reply other threads:[~2019-01-30 9:37 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-01-28 6:59 Damian McGuckin
2019-01-29 11:01 ` Szabolcs Nagy
2019-01-29 11:26 ` Damian McGuckin
2019-01-29 11:43 ` Szabolcs Nagy
2019-01-30 1:18 ` Damian McGuckin
2019-01-30 9:37 ` Szabolcs Nagy [this message]
2019-01-30 11:14 ` Damian McGuckin
2019-01-30 12:19 ` Szabolcs Nagy
2019-01-30 12:44 ` Alexander Monakov
2019-01-30 14:10 ` Szabolcs Nagy
2019-02-01 23:26 ` Morten Welinder
2019-02-02 3:39 ` Szabolcs Nagy
2019-02-03 2:05 ` Morten Welinder
2019-02-03 3:07 ` Damian McGuckin
2019-04-03 1:13 ` Floating Point Accuracy Damian McGuckin
2019-01-30 12:56 ` Possible Mistype in exp.c Damian McGuckin
2019-01-31 0:04 ` Szabolcs Nagy
2019-01-31 0:39 ` Damian McGuckin
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