From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!.POSTED!not-for-mail From: "Herring, Davis" Newsgroups: gmane.emacs.devel Subject: Re: Making 'eq' == 'eql' in bignum branch Date: Sat, 1 Sep 2018 01:26:35 +0000 Message-ID: <2a504dfa3daa4d5f8b2dd9186ad966f1@lanl.gov> References: <0F8F6E54-176C-48EE-9E7C-7CAC424D0D55@raeburn.org> <352c998a64c646b983a131039e9c732b@lanl.gov> <20180831195942.GA4898@ACM>, <43c2bd25-f0db-c405-4117-a4a88db299b2@gmail.com> NNTP-Posting-Host: blaine.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset="Windows-1252" Content-Transfer-Encoding: quoted-printable X-Trace: blaine.gmane.org 1535765177 31998 195.159.176.226 (1 Sep 2018 01:26:17 GMT) X-Complaints-To: usenet@blaine.gmane.org NNTP-Posting-Date: Sat, 1 Sep 2018 01:26:17 +0000 (UTC) Cc: Pip Cet , "emacs-devel@gnu.org" To: =?Windows-1252?Q?Cl=E9ment_Pit-Claudel?= , "Alan Mackenzie" Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Sat Sep 01 03:26:13 2018 Return-path: Envelope-to: ged-emacs-devel@m.gmane.org Original-Received: from lists.gnu.org ([208.118.235.17]) by blaine.gmane.org with esmtp (Exim 4.84_2) (envelope-from ) id 1fvug0-0008Cq-DQ for ged-emacs-devel@m.gmane.org; Sat, 01 Sep 2018 03:26:12 +0200 Original-Received: from localhost ([::1]:59114 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fvui6-0002bf-Gr for ged-emacs-devel@m.gmane.org; Fri, 31 Aug 2018 21:28:22 -0400 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:56647) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fvuhU-0002bP-Af for emacs-devel@gnu.org; Fri, 31 Aug 2018 21:27:45 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1fvuhQ-0006uo-BJ for emacs-devel@gnu.org; Fri, 31 Aug 2018 21:27:44 -0400 Original-Received: from proofpoint8.lanl.gov ([204.121.3.47]:48880) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1fvuhQ-0006tn-3C for emacs-devel@gnu.org; Fri, 31 Aug 2018 21:27:40 -0400 Original-Received: from pps.filterd (proofpoint8.lanl.gov [127.0.0.1]) by proofpoint8.lanl.gov (8.16.0.22/8.16.0.22) with SMTP id w811QaYo050220; Fri, 31 Aug 2018 19:26:36 -0600 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=lanl.gov; h=from : to : cc : subject : date : message-id : references : in-reply-to : content-type : content-transfer-encoding : mime-version; s=lanl; bh=0cm34E/PwYZ0ioQZO02J/opl0JRxm+fs82RY5XSw4TY=; b=ayoe0lyLghP2C8xCtRirAJvQMdmyzd3BM9n/7Szjz5bcex8sVZDmjGmWL2nByNIbr+Yz 0gDNLP7oU+JKPd392qJrc9dqP7pZZ0sj1KO0ndQNpxl3H9yh9JD2n3MBPoZDvhfv44Sh 4CiWB6gMk+x9v4MdS2sX+N1iTVYu0TLDbfeI2K4kT8KvRjp4vCHJ3bXpgtrxzOS/Zvrt 8WyvP9NYMU2JCIbJ1E3G7g8ngCvBvQfbA7iLMiqQ6ZOi4H7FYX95GlrsEmU0cVpf5PEZ 5y8G2N3qwzpU5XPs6ujvsi8k/EvWJiog+7/8+Bn9U04edzGAg17uVxiopZY5etTQMhEO Pw== Original-Received: from mailrelay2.lanl.gov (mailrelay2.lanl.gov [128.165.4.103]) by proofpoint8.lanl.gov with ESMTP id 2m33w1j586-1; Fri, 31 Aug 2018 19:26:35 -0600 Original-Received: from localhost (localhost.localdomain [127.0.0.1]) by mailrelay2.lanl.gov (Postfix) with ESMTP id 9D2E8F075DC; Fri, 31 Aug 2018 19:26:35 -0600 (MDT) X-NIE-2-Virus-Scanner: amavisd-new at mailrelay2.lanl.gov Original-Received: from EXG16-P-MBX06.win.lanl.gov (exg16-p-mbx06.win.lanl.gov [128.165.106.186]) by mailrelay2.lanl.gov (Postfix) with ESMTP id 8755FF075D6; Fri, 31 Aug 2018 19:26:35 -0600 (MDT) Original-Received: from EXG16-P-MBX03.win.lanl.gov (128.165.106.183) by EXG16-P-MBX06.win.lanl.gov (128.165.106.186) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.1.1531.3; Fri, 31 Aug 2018 19:26:35 -0600 Original-Received: from EXG16-P-MBX03.win.lanl.gov ([fe80::7c23:7a54:2544:a5c4]) by EXG16-P-MBX03.win.lanl.gov ([fe80::7c23:7a54:2544:a5c4%2]) with mapi id 15.01.1531.004; Fri, 31 Aug 2018 19:26:35 -0600 Thread-Topic: Making 'eq' == 'eql' in bignum branch Thread-Index: AQHUJe8LD6NzhSV8GEm1qwYJaFkj56SksmolgAFAbQCAIfRMJoAA0Z4AgAAIcQCAAAPVgIAAIEK+gAADi2yAAM3mKIAH+FMAgAEBu7WAAHsOgIABayq8gABucgCAAFZngP//6vOlgADD7ACAAFMVAP//5p7EgASenACAAAiuAP//7EQt In-Reply-To: <43c2bd25-f0db-c405-4117-a4a88db299b2@gmail.com> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [128.165.106.203] X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:, , definitions=2018-08-31_11:, , signatures=0 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 priorityscore=1501 malwarescore=0 suspectscore=0 phishscore=0 bulkscore=0 spamscore=0 clxscore=1015 lowpriorityscore=0 mlxscore=0 impostorscore=0 mlxlogscore=653 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1807170000 definitions=main-1809010014 X-detected-operating-system: by eggs.gnu.org: GNU/Linux 3.x [generic] [fuzzy] X-Received-From: 204.121.3.47 X-BeenThere: emacs-devel@gnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: "Emacs development discussions." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Original-Sender: "Emacs-devel" Xref: news.gmane.org gmane.emacs.devel:229153 Archived-At: > The original formulation could have been better, but to me > it didn't look like a rejection of expertise=85 rather, I took it > as a statement that the word "number" gets assigned > different meanings across fields. You're definitely right that it could have been better: I now realize that = I made a poor assumption. Re-quoting: > Signed infinities are convenient symbols, but they're not numbers; I > recall the horrified reaction of a mathematician when I told her about > IEEE infinities >From context, I took this to mean that the mathematician in question object= ed to IEEE infinities _because +/-inf "aren't numbers"_, when her opinion c= ould easily have been something rather more nuanced like "the utility of fl= oating-point arithmetic is reduced by the inclusion of values that are not = real numbers". There are legitimate issues with IEEE arithmetic, like the = fact that infinities are produced despite the general rule that results are= supposed to be rounded to the nearest representable value (which can't eve= r be infinity). My apologies for presuming to know the reasoning of someone not even party = to the conversation! Davis=