From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!.POSTED!not-for-mail From: Stefan Monnier Newsgroups: gmane.emacs.devel Subject: Re: Making 'eq' == 'eql' in bignum branch Date: Mon, 30 Jul 2018 13:07:35 -0400 Message-ID: References: <29f933ac-a6bf-8742-66a7-0a9d6d3e5a88@disroot.org> <87tvpdnzgy.fsf@tromey.com> <4c2a814f-c254-29e5-39cf-11b5f2e5c9c8@cs.ucla.edu> <49d8ba62-c9a5-9203-d882-8e900b441ff3@cs.ucla.edu> <8e0320d9-e0d0-2b57-57cc-2df4399f133c@cs.ucla.edu> <87lgaio7xd.fsf@tromey.com> <877em1cb0i.fsf@tromey.com> <765767b2-d2e5-a9a6-f724-d58ecf4847bb@cs.ucla.edu> <76081b5d-8c10-0a37-2c97-d4864c0faa80@cs.ucla.edu> <09153aed-361d-4f82-d9ac-b502314769ae@cs.ucla.edu> <83600yt8ih.fsf@gnu.org> NNTP-Posting-Host: blaine.gmane.org Mime-Version: 1.0 Content-Type: text/plain X-Trace: blaine.gmane.org 1532971896 31020 195.159.176.226 (30 Jul 2018 17:31:36 GMT) X-Complaints-To: usenet@blaine.gmane.org NNTP-Posting-Date: Mon, 30 Jul 2018 17:31:36 +0000 (UTC) User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/27.0.50 (gnu/linux) To: emacs-devel@gnu.org Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Mon Jul 30 19:31:32 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 1fkC16-0007yK-Bs for ged-emacs-devel@m.gmane.org; Mon, 30 Jul 2018 19:31:32 +0200 Original-Received: from localhost ([::1]:54119 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fkC3D-0001gd-3l for ged-emacs-devel@m.gmane.org; Mon, 30 Jul 2018 13:33:43 -0400 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:48869) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fkBe8-0004oV-GF for emacs-devel@gnu.org; Mon, 30 Jul 2018 13:07:49 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1fkBe5-0002kL-ME for emacs-devel@gnu.org; Mon, 30 Jul 2018 13:07:48 -0400 Original-Received: from [195.159.176.226] (port=43114 helo=blaine.gmane.org) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_128_CBC_SHA1:16) (Exim 4.71) (envelope-from ) id 1fkBe5-0002kF-DG for emacs-devel@gnu.org; Mon, 30 Jul 2018 13:07:45 -0400 Original-Received: from list by blaine.gmane.org with local (Exim 4.84_2) (envelope-from ) id 1fkBbw-0003Kx-GH for emacs-devel@gnu.org; Mon, 30 Jul 2018 19:05:32 +0200 X-Injected-Via-Gmane: http://gmane.org/ Original-Lines: 10 Original-X-Complaints-To: usenet@blaine.gmane.org Cancel-Lock: sha1:dCxKv4yESydIuMNslgEYtSCnQpk= X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] [fuzzy] X-Received-From: 195.159.176.226 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:228005 Archived-At: > How likely is it to see a floating-point number with 4 low-order bits > of mantissa zero? For floating point values read from Elisp source code, the probability is not bad at all. OTOH for code performing any non-trivial calculation, of course, the probably should hover around 1/2^4, so pretty low. Stefan