From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <gcc-patches-return-405568-listarch-gcc-patches=gcc.gnu.org@gcc.gnu.org>
Received: (qmail 31016 invoked by alias); 19 Aug 2015 15:32:07 -0000
Mailing-List: contact gcc-patches-help@gcc.gnu.org; run by ezmlm
Precedence: bulk
List-Id: <gcc-patches.gcc.gnu.org>
List-Archive: <http://gcc.gnu.org/ml/gcc-patches/>
List-Post: <mailto:gcc-patches@gcc.gnu.org>
List-Help: <mailto:gcc-patches-help@gcc.gnu.org>
Sender: gcc-patches-owner@gcc.gnu.org
Received: (qmail 31006 invoked by uid 89); 19 Aug 2015 15:32:07 -0000
Authentication-Results: sourceware.org; auth=none
X-Virus-Found: No
X-Spam-SWARE-Status: No, score=-1.4 required=5.0 tests=AWL,BAYES_00,SPF_PASS autolearn=ham version=3.3.2
X-HELO: eu-smtp-delivery-143.mimecast.com
Received: from eu-smtp-delivery-143.mimecast.com (HELO eu-smtp-delivery-143.mimecast.com) (146.101.78.143) by sourceware.org (qpsmtpd/0.93/v0.84-503-g423c35a) with ESMTP; Wed, 19 Aug 2015 15:32:06 +0000
Received: from cam-owa1.Emea.Arm.com (fw-tnat.cambridge.arm.com [217.140.96.140]) by eu-smtp-1.mimecast.com with ESMTP id uk-mta-7-G9WZ_OklQcSI-zyKT55z0g-1; Wed, 19 Aug 2015 16:32:01 +0100
Received: from localhost ([10.1.2.79]) by cam-owa1.Emea.Arm.com with Microsoft SMTPSVC(6.0.3790.3959);	 Wed, 19 Aug 2015 16:32:00 +0100
From: Richard Sandiford <richard.sandiford@arm.com>
To: Richard Biener <richard.guenther@gmail.com>
Mail-Followup-To: Richard Biener <richard.guenther@gmail.com>,Michael Matz <matz@suse.de>,  David Sherwood <David.Sherwood@arm.com>,  GCC Patches <gcc-patches@gcc.gnu.org>, richard.sandiford@arm.com
Cc: Michael Matz <matz@suse.de>,  David Sherwood <David.Sherwood@arm.com>,  GCC Patches <gcc-patches@gcc.gnu.org>
Subject: Re: [PING][Patch] Add support for IEEE-conformant versions of scalar fmin* and fmax*
References: <000001d0d5b0$5da4dbb0$18ee9310$@arm.com>	<CAFiYyc1bgWwdV4PRLBuUv3yC0X-k5gJVuyyV9V7Vrz3Lte+wZw@mail.gmail.com>	<000001d0d8cf$2fb42770$8f1c7650$@arm.com>	<CAFiYyc2XT+iqyRNgp+N2gWsaP-=1xVUWsuUEj+bOq_UmE_1eLw@mail.gmail.com>	<000001d0d9a6$1efdc350$5cf949f0$@arm.com>	<CAFiYyc3CLF8beK5GaB86Ad7623gWc9yhc8nTom-ByoaHTEMyOg@mail.gmail.com>	<87fv3gbs36.fsf@e105548-lin.cambridge.arm.com>	<CAFiYyc1q7deng7mjnt788RwqkHuvdDCKW=uWpd=goEvTeZiK5Q@mail.gmail.com>	<alpine.LSU.2.20.1508191704220.30229@wotan.suse.de>	<D248FF31-2CB2-496B-A732-254ECF34A905@gmail.com>
Date: Wed, 19 Aug 2015 15:39:00 -0000
In-Reply-To: <D248FF31-2CB2-496B-A732-254ECF34A905@gmail.com> (Richard	Biener's message of "Wed, 19 Aug 2015 16:18:25 +0100")
Message-ID: <87pp2j9tvz.fsf@e105548-lin.cambridge.arm.com>
User-Agent: Gnus/5.130012 (Ma Gnus v0.12) Emacs/24.3 (gnu/linux)
MIME-Version: 1.0
X-MC-Unique: G9WZ_OklQcSI-zyKT55z0g-1
Content-Type: text/plain; charset=WINDOWS-1252
Content-Transfer-Encoding: quoted-printable
X-SW-Source: 2015-08/txt/msg01105.txt.bz2

Richard Biener <richard.guenther@gmail.com> writes:
> BTW, in addition to errno math there is rounding math where we rely on
> virtual operands to not mess with ordering.

But you know what I'm going to say to that.  Rounding affects arithmetic
just as much as things like pow().  (And also doesn't affect min/max.)

Richard