From owner-cvs-src@FreeBSD.ORG Tue Apr 1 23:59:17 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 26BEA37B401; Tue, 1 Apr 2003 23:59:17 -0800 (PST) Received: from cirb503493.alcatel.com.au (c18609.belrs1.nsw.optusnet.com.au [210.49.80.204]) by mx1.FreeBSD.org (Postfix) with ESMTP id 9D80343FBD; Tue, 1 Apr 2003 23:59:15 -0800 (PST) (envelope-from peterjeremy@optushome.com.au) Received: from cirb503493.alcatel.com.au (localhost.alcatel.com.au [127.0.0.1])h327xCM2030873; Wed, 2 Apr 2003 17:59:13 +1000 (EST) (envelope-from jeremyp@cirb503493.alcatel.com.au) Received: (from jeremyp@localhost) by cirb503493.alcatel.com.au (8.12.8/8.12.8/Submit) id h327x5el030872; Wed, 2 Apr 2003 17:59:06 +1000 (EST) Date: Wed, 2 Apr 2003 17:59:05 +1000 From: Peter Jeremy To: Bruce Evans Message-ID: <20030402075905.GA30835@cirb503493.alcatel.com.au> References: <200303272038.h2RKcM7L096560@repoman.freebsd.org> <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> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20030402154250.X25489@gamplex.bde.org> User-Agent: Mutt/1.4.1i cc: Alexander Leidinger cc: src-committers@FreeBSD.org cc: cvs-all@FreeBSD.org cc: cvs-src@FreeBSD.org 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: Wed, 02 Apr 2003 07:59:17 -0000 On Wed, Apr 02, 2003 at 04:21:30PM +1000, Bruce Evans wrote: >On Wed, 2 Apr 2003, Peter Jeremy wrote: > >> On Tue, Apr 01, 2003 at 05:24:40PM +0200, Alexander Leidinger wrote: >> >We noticed that icc does use other values for LDBL_MIN than we do, and >> >instead of just thinking that Intel does it right I wanted to verify it. > >This might be caused by icc actually understanding the target's default >precision for long doubles (FreeBSD changes the hardware default of 64-bit >to 53-bit for technical reasons). Is this also true on ia64? And the LDBL_* constants for sparc64 are for 113-bit fractions. I was going to mention this but thought it had changed since all the LDBL_* constants have been changed to 64-bit fraction values (they are 53-bit in -STABLE). Which is more wrong: LDBL_* constants that are "correct" but unusable because the CPU is set to "round to double" or LBDL_* constants that match the CPU rounding but not the compiler's "long double" type? >ucbtest is good but is too old to cover much of C99. I haven't found >anything anywhere near as good and up to date. I was also thinking of paranoia - which has been imported into gcc as enquire. It's even older than ucbtest and does a good job of generating all the float.h constants - but it doesn't check that the CPU actually implements IEEE arithmetic correctly. Peter