From owner-freebsd-hackers@FreeBSD.ORG Fri Aug 5 17:41:26 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 6999716A41F for ; Fri, 5 Aug 2005 17:41:23 +0000 (GMT) (envelope-from imp@bsdimp.com) Received: from harmony.bsdimp.com (vc4-2-0-87.dsl.netrack.net [199.45.160.85]) by mx1.FreeBSD.org (Postfix) with ESMTP id E0A2743E62 for ; Fri, 5 Aug 2005 17:37:09 +0000 (GMT) (envelope-from imp@bsdimp.com) Received: from localhost (localhost.village.org [127.0.0.1] (may be forged)) by harmony.bsdimp.com (8.13.3/8.13.3) with ESMTP id j75Hakht082778; Fri, 5 Aug 2005 11:36:47 -0600 (MDT) (envelope-from imp@bsdimp.com) Date: Fri, 05 Aug 2005 11:37:48 -0600 (MDT) Message-Id: <20050805.113748.60551134.imp@bsdimp.com> To: DAntrushin@mail.ru From: "M. Warner Losh" In-Reply-To: <42F36675.2090602@mail.ru> References: <20050804150405.GA95916@troutmask.apl.washington.edu> <42F36675.2090602@mail.ru> X-Mailer: Mew version 3.3 on Emacs 21.3 / Mule 5.0 (SAKAKI) Mime-Version: 1.0 Content-Type: Text/Plain; charset=us-ascii Content-Transfer-Encoding: 7bit X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-2.0 (harmony.bsdimp.com [127.0.0.1]); Fri, 05 Aug 2005 11:36:47 -0600 (MDT) Cc: freebsd-hackers@freebsd.org, sgk@troutmask.apl.washington.edu 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 17:41:26 -0000 In message: <42F36675.2090602@mail.ru> Denis Antrushin writes: : 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') float and double are defined by the IEEE Standard. long double isn't required to be anything, by the IEEE standard. Warner