From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <glibc-bugs-return-18526-listarch-glibc-bugs=sources.redhat.com@sourceware.org>
Received: (qmail 21907 invoked by alias); 29 Apr 2013 16:29:39 -0000
Mailing-List: contact glibc-bugs-help@sourceware.org; run by ezmlm
Precedence: bulk
List-Id: <glibc-bugs.sourceware.org>
List-Subscribe: <mailto:glibc-bugs-subscribe@sourceware.org>
List-Post: <mailto:glibc-bugs@sourceware.org>
List-Help: <mailto:glibc-bugs-help@sourceware.org>, <http://sourceware.org/lists.html#faqs>
Sender: glibc-bugs-owner@sourceware.org
Received: (qmail 21867 invoked by uid 89); 29 Apr 2013 16:29:38 -0000
X-Spam-SWARE-Status: No, score=-0.9 required=5.0 tests=AWL,BAYES_00,FREEMAIL_FROM,SPF_NEUTRAL autolearn=no version=3.3.1
X-Spam-User: qpsmtpd, 2 recipients
Received: from popelka.ms.mff.cuni.cz (HELO popelka.ms.mff.cuni.cz) (195.113.20.131)    by sourceware.org (qpsmtpd/0.84/v0.84-167-ge50287c) with ESMTP; Mon, 29 Apr 2013 16:29:37 +0000
Received: from domone.kolej.mff.cuni.cz (popelka.ms.mff.cuni.cz [195.113.20.131])	by popelka.ms.mff.cuni.cz (Postfix) with ESMTPS id D09556A838;	Mon, 29 Apr 2013 18:29:32 +0200 (CEST)
Received: by domone.kolej.mff.cuni.cz (Postfix, from userid 1000)	id 7EFD160470; Mon, 29 Apr 2013 18:28:51 +0200 (CEST)
Date: Mon, 29 Apr 2013 16:29:00 -0000
From: =?utf-8?B?T25kxZllaiBCw61sa2E=?= <neleai@seznam.cz>
To: bugdal at aerifal dot cx <sourceware-bugzilla@sourceware.org>
Cc: glibc-bugs@sourceware.org
Subject: Re: [Bug math/14412] Removal of sysdeps/x86_64/fpu/s_sincos.S causes regressions
Message-ID: <20130429162851.GA25872@domone.kolej.mff.cuni.cz>
References: <bug-14412-131@http.sourceware.org/bugzilla/> <bug-14412-131-BJdIy2KmpA@http.sourceware.org/bugzilla/>
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
In-Reply-To: <bug-14412-131-BJdIy2KmpA@http.sourceware.org/bugzilla/>
User-Agent: Mutt/1.5.20 (2009-06-14)
X-SW-Source: 2013-04/txt/msg00233.txt.bz2

On Mon, Apr 29, 2013 at 02:48:43PM +0000, bugdal at aerifal dot cx wrote:
> http://sourceware.org/bugzilla/show_bug.cgi?id=14412
> 
> --- Comment #41 from Rich Felker <bugdal at aerifal dot cx> 2013-04-29 14:48:43 UTC ---
> Ondrej, the input always has 52 significant bits unless it's denormal. If, due
> to the way you computed the input value, none of them are significant to you,
> then that's your problem.

> sin() and cos() are still required to return the
> correct result assuming all bits of input are significant.
> 
Citation needed.