From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 26404 invoked by alias); 17 Dec 2013 14:20:57 -0000 Mailing-List: contact libc-ports-help@sourceware.org; run by ezmlm Precedence: bulk List-Id: List-Subscribe: List-Post: List-Help: , Sender: libc-ports-owner@sourceware.org Received: (qmail 26380 invoked by uid 89); 17 Dec 2013 14:20:56 -0000 Authentication-Results: sourceware.org; auth=none X-Virus-Found: No X-Spam-SWARE-Status: No, score=-2.0 required=5.0 tests=AWL,BAYES_00 autolearn=ham version=3.3.2 X-HELO: relay1.mentorg.com Received: from relay1.mentorg.com (HELO relay1.mentorg.com) (192.94.38.131) by sourceware.org (qpsmtpd/0.93/v0.84-503-g423c35a) with ESMTP; Tue, 17 Dec 2013 14:20:56 +0000 Received: from svr-orw-fem-01.mgc.mentorg.com ([147.34.98.93]) by relay1.mentorg.com with esmtp id 1VsvW0-0001nZ-VN from joseph_myers@mentor.com ; Tue, 17 Dec 2013 06:20:52 -0800 Received: from SVR-IES-FEM-01.mgc.mentorg.com ([137.202.0.104]) by svr-orw-fem-01.mgc.mentorg.com over TLS secured channel with Microsoft SMTPSVC(6.0.3790.4675); Tue, 17 Dec 2013 06:20:52 -0800 Received: from digraph.polyomino.org.uk (137.202.0.76) by SVR-IES-FEM-01.mgc.mentorg.com (137.202.0.104) with Microsoft SMTP Server id 14.2.247.3; Tue, 17 Dec 2013 14:20:50 +0000 Received: from jsm28 (helo=localhost) by digraph.polyomino.org.uk with local-esmtp (Exim 4.76) (envelope-from ) id 1VsvVx-0003Uf-4u; Tue, 17 Dec 2013 14:20:49 +0000 Date: Tue, 17 Dec 2013 14:20:00 -0000 From: "Joseph S. Myers" To: Marcus Shawcroft CC: libc-ports Subject: Re: [PATCH] AArch64 compile dbl-64/e_sqrt.c with -ffp-contract=off In-Reply-To: Message-ID: References: MIME-Version: 1.0 Content-Type: text/plain; charset="US-ASCII" X-SW-Source: 2013-12/txt/msg00026.txt.bz2 On Tue, 17 Dec 2013, Marcus Shawcroft wrote: > This patch fixes the numerical errors in aarch64 sqrt() due to the > compilers use of fnmsub (negated fused multiply-subtract). > > Previous thread: > https://sourceware.org/ml/libc-alpha/2013-12/msg00473.html > > I'll leave this on the list for 24 hours before committing to give > folks the opportunity to comment on the (in)appropriateness of my > solution... The source file in question is architecture-independent, so the makefile change should also be architecture-independent (i.e. in sysdeps/ieee754/dbl-64/Makefile). -- Joseph S. Myers joseph@codesourcery.com