From: Wilco Dijkstra <Wilco.Dijkstra@arm.com>
To: Adhemerval Zanella <adhemerval.zanella@linaro.org>
Cc: 'GNU C Library' <libc-alpha@sourceware.org>
Subject: [PATCH 5/5] ia64: Use generic exp10f
Date: Thu, 18 Jun 2020 17:18:04 +0000 [thread overview]
Message-ID: <DB8PR08MB5036BBBB844E43C778FD6BBF839B0@DB8PR08MB5036.eurprd08.prod.outlook.com> (raw)
Hi Adhemerval,
On 09/04/2020 16:59, Adhemerval Zanella wrote:
> The generic implementation is slight worse (Itanium(R) Processor 9020):
>
> Before new code:
> "exp10f": {
> "": {
> "duration": 3.52876e+08,
> "iterations": 2.1456e+07,
> "max": 232.907,
> "min": 7.766,
> "mean": 16.4465
> }
> }
>
> With new code:
> "exp10f": {
> "": {
> "duration": 3.67279e+08,
> "iterations": 2.1456e+07,
> "max": 220.718,
> "min": 15.503,
> "mean": 17.1178
> }
> }
>
> However it fixes all the issues on both:
>
> math/test-float-exp10
> math/test-float32-exp10
>
> (all the issues wrong results for non default rounding modes).
That's only a 4% slowdown - given it removes almost 600 lines of target
specific code and fixes various bugs, it's well worth it. LGTM.
Wilco
next reply other threads:[~2020-06-18 17:18 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-06-18 17:18 Wilco Dijkstra [this message]
-- strict thread matches above, loose matches on Subject: below --
2020-04-09 19:59 [PATCH 1/5] benchtests: Add exp10f benchmark Adhemerval Zanella
2020-04-09 19:59 ` [PATCH 5/5] ia64: Use generic exp10f Adhemerval Zanella
2020-04-09 21:18 ` Joseph Myers
2020-04-16 20:52 ` Adhemerval Zanella
2020-04-29 17:11 ` Adhemerval Zanella
2020-05-20 20:19 ` Adhemerval Zanella
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=DB8PR08MB5036BBBB844E43C778FD6BBF839B0@DB8PR08MB5036.eurprd08.prod.outlook.com \
--to=wilco.dijkstra@arm.com \
--cc=adhemerval.zanella@linaro.org \
--cc=libc-alpha@sourceware.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).