From owner-cvs-src@FreeBSD.ORG Wed Apr 2 19:34:42 2003 Return-Path: Delivered-To: cvs-src@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id DFCB637B401; Wed, 2 Apr 2003 19:34:42 -0800 (PST) Received: from ns1.xcllnt.net (209-128-86-226.BAYAREA.NET [209.128.86.226]) by mx1.FreeBSD.org (Postfix) with ESMTP id ADDE443F85; Wed, 2 Apr 2003 19:34:41 -0800 (PST) (envelope-from marcel@xcllnt.net) Received: from dhcp01.pn.xcllnt.net (dhcp01.pn.xcllnt.net [192.168.4.201]) by ns1.xcllnt.net (8.12.8/8.12.8) with ESMTP id h333YfKu083414; Wed, 2 Apr 2003 19:34:41 -0800 (PST) (envelope-from marcel@piii.pn.xcllnt.net) Received: from dhcp01.pn.xcllnt.net (localhost [127.0.0.1]) by dhcp01.pn.xcllnt.net (8.12.9/8.12.8) with ESMTP id h333YeTH066741; Wed, 2 Apr 2003 19:34:41 -0800 (PST) (envelope-from marcel@dhcp01.pn.xcllnt.net) Received: (from marcel@localhost) by dhcp01.pn.xcllnt.net (8.12.9/8.12.9/Submit) id h333YeoX066740; Wed, 2 Apr 2003 19:34:40 -0800 (PST) Date: Wed, 2 Apr 2003 19:34:40 -0800 From: Marcel Moolenaar To: Bruce Evans , Peter Jeremy , Alexander Leidinger , cvs-src@FreeBSD.org, src-committers@FreeBSD.org, cvs-all@FreeBSD.org Message-ID: <20030403033440.GA66355@dhcp01.pn.xcllnt.net> References: <20030327204935.GA18134@HAL9000.homeunix.com> <20030330175646.281097ad.Alexander@Leidinger.net> <20030331082023.GE11307@cirb503493.alcatel.com.au> <20030401172440.701aaafd.Alexander@Leidinger.net> <20030401200457.GA30284@cirb503493.alcatel.com.au> <20030402154250.X25489@gamplex.bde.org> <20030402075905.GA30835@cirb503493.alcatel.com.au> <20030402203725.O26345@gamplex.bde.org> <20030402210714.GB65073@dhcp01.pn.xcllnt.net> <20030403001250.GA55715@HAL9000.homeunix.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20030403001250.GA55715@HAL9000.homeunix.com> User-Agent: Mutt/1.5.3i Subject: Re: cvs commit: src/sys/ia64/include float.h X-BeenThere: cvs-src@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: CVS commit messages for the src tree List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 03 Apr 2003 03:34:43 -0000 On Wed, Apr 02, 2003 at 04:12:50PM -0800, David Schultz wrote: > > > Note also that the 82-bit FP registers have a 17-bit exponent to aid > > in near-overflow and near-underflow computations in IEEE754 double- > > extended format. Of course an exception is still raised if the result > > does not fit the target if the target is in double-extended format. > > Right. I think the LDBL_{MIN,MAX}* constants need to refer to the > memory format, not the FPU-internal format. Agreed. > If we *really* want > to be pedantic, we can clear the WRE bit in the FPU control > register and sacrifice the extra range in the interests of being > predictable. This is already the default, except for SF1. SF1 is documented to be reserved for math library implementations and has WRE enabled by default. > That's similar to what we do with i386 now, where we > sacrifice precision so gcc bugs don't cause strange things to > happen in the lower echelons. It's rather annoying. We don't > change the default precision control setting on IA64, do we? Correct, we don't. -- Marcel Moolenaar USPA: A-39004 marcel@xcllnt.net