From owner-sc22wg5@dkuug.dk Fri Aug 15 06:03:29 2003 Received: (from majordom@localhost) by dkuug.dk (8.12.8p1/8.9.2) id h7F43TfH076428 for sc22wg5-domo; Fri, 15 Aug 2003 06:03:29 +0200 (CEST) (envelope-from owner-sc22wg5@dkuug.dk) X-Authentication-Warning: ptah.dkuug.dk: majordom set sender to owner-sc22wg5@dkuug.dk using -f Received: from brmea-mail-2.sun.com (brmea-mail-2.Sun.COM [192.18.98.43]) by dkuug.dk (8.12.8p1/8.9.2) with ESMTP id h7F43JEc076423 for ; Fri, 15 Aug 2003 06:03:23 +0200 (CEST) (envelope-from corbett@mpkmail.eng.sun.com) Received: from engmail1mpk.Eng.Sun.COM ([129.146.11.21]) by brmea-mail-2.sun.com (8.12.9/8.12.9) with ESMTP id h7F43Ijk000714; Thu, 14 Aug 2003 22:03:18 -0600 (MDT) Received: from phys-mpkmaila (phys-mpkmaila.SFBay.Sun.COM [129.146.18.131]) by engmail1mpk.Eng.Sun.COM (8.12.9+Sun/8.12.9/ENSMAIL,v2.2) with ESMTP id h7F43IV7012442; Thu, 14 Aug 2003 21:03:18 -0700 (PDT) Received: from lupa (lupa.Eng.Sun.COM [129.146.78.104]) by mpkmail.eng.sun.com (iPlanet Messaging Server 5.2 Patch 1 (built Apr 2 2002)) with SMTP id <0HJN0036C79HXJ@mpkmail.eng.sun.com>; Thu, 14 Aug 2003 21:03:18 -0700 (PDT) Date: Thu, 14 Aug 2003 21:03:18 -0700 (PDT) From: Robert Corbett Subject: Re: (SC22WG5.2936) clarification of technical intent in N1553 To: malcolm@nag.co.uk Cc: sc22wg5@dkuug.dk Reply-to: Robert Corbett Message-id: <0HJN0036D79IXJ@mpkmail.eng.sun.com> MIME-version: 1.0 X-Mailer: dtmail 1.3.0 @(#)CDE Version 1.4.8 SunOS 5.8 sun4u sparc Content-type: TEXT/plain; charset=us-ascii Content-transfer-encoding: 7BIT Content-MD5: lCu4d6+tKuWx+oVdT6LBIg== Sender: owner-sc22wg5@dkuug.dk Precedence: bulk > And certainly 754 has licence for signalling NaNs to become nonsignalling > at the drop of a hat (even on a "copy" operation), so making that > characteristic the most important one (by putting it first) would be > inappropriate. Any floating-point operation, including a copy operation, performed on a signaling NaN must produce invalid operation exception. That is, or at least should be, a big deal. Sincerely, Bob Corbett