From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 7377 invoked by alias); 20 Nov 2009 21:28:40 -0000 Received: (qmail 7361 invoked by uid 22791); 20 Nov 2009 21:28:39 -0000 X-SWARE-Spam-Status: No, hits=-2.6 required=5.0 tests=AWL,BAYES_00 X-Spam-Check-By: sourceware.org Received: from snape.CeBiTec.Uni-Bielefeld.DE (HELO smtp-relay.CeBiTec.Uni-Bielefeld.DE) (129.70.160.84) by sourceware.org (qpsmtpd/0.43rc1) with ESMTP; Fri, 20 Nov 2009 21:27:44 +0000 Received: from localhost (localhost.CeBiTec.Uni-Bielefeld.DE [127.0.0.1]) by smtp-relay.CeBiTec.Uni-Bielefeld.DE (Postfix) with ESMTP id 38409EA6; Fri, 20 Nov 2009 22:27:42 +0100 (CET) Received: from smtp-relay.CeBiTec.Uni-Bielefeld.DE ([127.0.0.1]) by localhost (malfoy.CeBiTec.Uni-Bielefeld.DE [127.0.0.1]) (amavisd-new, port 10024) with LMTP id Ki50SZfuvs7w; Fri, 20 Nov 2009 22:27:40 +0100 (CET) Received: from manam.CeBiTec.Uni-Bielefeld.DE (manam.CeBiTec.Uni-Bielefeld.DE [129.70.161.120]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by smtp-relay.CeBiTec.Uni-Bielefeld.DE (Postfix) with ESMTPS id 5E3EDEA5; Fri, 20 Nov 2009 22:27:40 +0100 (CET) Received: (from ro@localhost) by manam.CeBiTec.Uni-Bielefeld.DE (8.14.3+Sun/8.14.3/Submit) id nAKLRdMO001574; Fri, 20 Nov 2009 22:27:39 +0100 (MET) From: Rainer Orth To: "Joseph S. Myers" Cc: gcc@gcc.gnu.org Subject: Re: Supporting decimal float on additional platforms References: Date: Fri, 20 Nov 2009 21:28:00 -0000 In-Reply-To: (Joseph S. Myers's message of "Wed, 18 Nov 2009 20:07:23 +0000 (UTC)") Message-ID: User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/23.1 (usg-unix-v) MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-IsSubscribed: yes Mailing-List: contact gcc-help@gcc.gnu.org; run by ezmlm Precedence: bulk List-Id: List-Archive: List-Post: List-Help: Sender: gcc-owner@gcc.gnu.org X-SW-Source: 2009-11/txt/msg00587.txt.bz2 "Joseph S. Myers" writes: > On Wed, 18 Nov 2009, Rainer Orth wrote: > >> be added on legacy platforms like IRIX and Tru64 UNIX, and even on >> Solaris probably won't show up until DFP is fully standardized. > > I'd have expected the Solaris maintainers to care more about whether > Solaris customers are asking for DFP support, than about whether it is an > ISO/IEC Technical Report Type 2 (as at present - TR 24732:2009 published > 2009-01-05) or an International Standard. I wasn't aware of that. Buying the TR from ISO is prohibitive, to I stayed with the (last?) draft, N1312 for now. I've asked the Sun compiler guys about their plans for decimal float support, but no answer so far: http://mail.opensolaris.org/pipermail/tools-compilers/2009-November/000907.html > As Janis says, the psABI needs to be aware of decimal floating point, so > if there is any group or community for a particular target concerned with > its ABI for interoperability between multiple implementations, you should > work with them on establishing the ABI for decimal floating point for that > target. While the i386 and amd64 psABIs already exist (although I haven't found the i386 specification yet), for SPARC that would be SPARC International, I think. Since I expect neither SGI nor HP to implement decimal float in libc on IRIX 6 or Tru64 UNIX, MIPS and Alpha are irrelevant from my point of view. > Much the same applies if anyone wishes to add fixed point (TR 18037) > support for more targets. I'll have a look at the last draft (N1169) for now. Right now, only MIPS support is in GCC, so there seems to be less traction so far. Thanks. Rainer -- ----------------------------------------------------------------------------- Rainer Orth, Center for Biotechnology, Bielefeld University