From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 29771 invoked by alias); 24 Sep 2006 20:49:30 -0000 Received: (qmail 29753 invoked by uid 22791); 24 Sep 2006 20:49:30 -0000 X-Spam-Check-By: sourceware.org Received: from sunsite.ms.mff.cuni.cz (HELO sunsite.mff.cuni.cz) (195.113.15.26) by sourceware.org (qpsmtpd/0.31) with ESMTP; Sun, 24 Sep 2006 20:49:28 +0000 Received: from sunsite.mff.cuni.cz (sunsite.mff.cuni.cz [127.0.0.1]) by sunsite.mff.cuni.cz (8.13.1/8.13.1) with ESMTP id k8OKnIxa014469; Sun, 24 Sep 2006 22:49:18 +0200 Received: (from jj@localhost) by sunsite.mff.cuni.cz (8.13.1/8.13.1/Submit) id k8OKnHKP014468; Sun, 24 Sep 2006 22:49:17 +0200 Date: Sun, 24 Sep 2006 20:49:00 -0000 From: Jakub Jelinek To: Steven Munroe Cc: Ulrich Drepper , Glibc hackers Subject: Re: [PATCH] Update ppc ulps Message-ID: <20060924204917.GW4556@sunsite.mff.cuni.cz> Reply-To: Jakub Jelinek References: <20060924101331.GV4556@sunsite.mff.cuni.cz> <4516E681.8000903@us.ibm.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <4516E681.8000903@us.ibm.com> User-Agent: Mutt/1.4.1i Mailing-List: contact libc-hacker-help@sourceware.org; run by ezmlm Precedence: bulk List-Subscribe: List-Archive: List-Post: List-Help: , Sender: libc-hacker-owner@sourceware.org X-SW-Source: 2006-09/txt/msg00049.txt.bz2 On Sun, Sep 24, 2006 at 03:11:45PM -0500, Steven Munroe wrote: > >I'm getting on both ppc and ppc64 2.125 ulp error on clog10 (> 2ulp > >allowed), 0.75ulp on y0 1/8 and 1ulp on imag csinh (-2-3i). > > > Which gcc are you using? I found that gcc-4.2 or gcc-4.1.1 with the > reassociation patch backport causes upls errors in ppc that are not > there for just gcc-4.1.1. I have reassoc backport in. That's one of the reasons why I haven't regenerated the ulps, just merged, so that both vanilla 4.1.x, 4.1.x with reassoc etc. pass. While in the above 4 cases gcc with reassoc generates worse code, for several ones there is an improvement too. Jakub