From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail3-relais-sop.national.inria.fr (mail3-relais-sop.national.inria.fr [192.134.164.104]) by sourceware.org (Postfix) with ESMTPS id 452683857831 for ; Thu, 26 Nov 2020 08:16:50 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.3.2 sourceware.org 452683857831 Authentication-Results: sourceware.org; dmarc=none (p=none dis=none) header.from=inria.fr Authentication-Results: sourceware.org; spf=pass smtp.mailfrom=Paul.Zimmermann@inria.fr X-IronPort-AV: E=Sophos;i="5.78,371,1599516000"; d="scan'208";a="365688344" Received: from tomate.loria.fr (HELO tomate) ([152.81.10.51]) by mail3-relais-sop.national.inria.fr with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 26 Nov 2020 09:16:48 +0100 Date: Thu, 26 Nov 2020 09:16:48 +0100 Message-Id: From: Paul Zimmermann To: Joseph Myers Cc: libc-alpha@sourceware.org In-Reply-To: (message from Joseph Myers on Wed, 25 Nov 2020 22:05:20 +0000) Subject: Re: [PATCH] add inputs to auto-libm-test-in yielding larger errors References: X-Spam-Status: No, score=-4.1 required=5.0 tests=BAYES_00, KAM_DMARC_STATUS, RCVD_IN_MSPIKE_H3, RCVD_IN_MSPIKE_WL, SPF_HELO_NONE, SPF_PASS, TXREP autolearn=ham autolearn_force=no version=3.4.2 X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on server2.sourceware.org X-BeenThere: libc-alpha@sourceware.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Libc-alpha mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 26 Nov 2020 08:16:51 -0000 > Date: Wed, 25 Nov 2020 22:05:20 +0000 > From: Joseph Myers > > On Wed, 25 Nov 2020, Paul Zimmermann wrote: > > > Hi, > > > > the following patch adds inputs to auto-libm-test-in that yield larger > > errors for double precision (binary64) on x86_64. In particular for exp > > and log the maximal ulp error increases from 0 to 1. > > OK. > > -- > Joseph S. Myers > joseph@codesourcery.com thank you Joseph, I will commit that patch. I also found a case where lgamma() yields more than 10 ulps of error: Checking lgamma x=-0x1.f60c969a239f2p+1 d=1.0410549778851831e+01 This should be considered as a bug and entered into bugzilla? Paul