From owner-freebsd-hackers@FreeBSD.ORG Fri Aug 5 16:38:13 2005 Return-Path: X-Original-To: freebsd-hackers@freebsd.org Delivered-To: freebsd-hackers@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id AC85316A41F for ; Fri, 5 Aug 2005 16:38:13 +0000 (GMT) (envelope-from DAntrushin@mail.ru) Received: from mx3.mail.ru (mx3.mail.ru [194.67.23.149]) by mx1.FreeBSD.org (Postfix) with ESMTP id C432A43D45 for ; Fri, 5 Aug 2005 16:38:12 +0000 (GMT) (envelope-from DAntrushin@mail.ru) Received: from [81.3.158.68] (port=11625 helo=[129.159.124.237]) by mx3.mail.ru with esmtp id 1E15Cy-000LGe-00; Fri, 05 Aug 2005 20:38:08 +0400 Message-ID: <42F395D8.5020200@mail.ru> Date: Fri, 05 Aug 2005 20:37:44 +0400 From: Denis Antrushin User-Agent: Mozilla Thunderbird 1.0.2 (X11/20050323) X-Accept-Language: en-us, en MIME-Version: 1.0 To: Steve Kargl References: <20050804150405.GA95916@troutmask.apl.washington.edu> <42F36675.2090602@mail.ru> <20050805160219.GB4147@troutmask.apl.washington.edu> In-Reply-To: <20050805160219.GB4147@troutmask.apl.washington.edu> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Cc: freebsd-hackers@freebsd.org Subject: Re: Number of significand bits in long double? X-BeenThere: freebsd-hackers@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Technical Discussions relating to FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 05 Aug 2005 16:38:13 -0000 Steve Kargl wrote: > On Fri, Aug 05, 2005 at 05:15:33PM +0400, Denis Antrushin wrote: > >>Steve Kargl wrote: >> >>>Can someone confirm or refute that the working number >>>of bits in the significand of long double type is 53 >>>on i386? >>> >> >>Yes, this is what IEEE 754 requires. >>(See http://docs.sun.com/source/806-3568/ncg_goldberg.html, >>section 'The IEEE Standard') >> > > BZZZT. > > You're not even close to correct. See Table 1 in the IEEE > 754 standard and then read section 3.4. > Well, you know the answer then ;-)