From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: Wolfgang Jenkner Newsgroups: gmane.emacs.bugs Subject: bug#19582: 25.0.50; [PATCH] Calc: glitches with negation of units Date: Tue, 13 Jan 2015 17:25:23 +0100 Message-ID: <85387e8x70.fsf@iznogoud.viz> References: <851tmyah3n.fsf@iznogoud.viz> <87k30q65gp.fsf@vh213601.truman.edu> <85egqy8yaq.fsf@iznogoud.viz> <87fvbe64wz.fsf@vh213601.truman.edu> NNTP-Posting-Host: plane.gmane.org Mime-Version: 1.0 Content-Type: text/plain X-Trace: ger.gmane.org 1421166381 7811 80.91.229.3 (13 Jan 2015 16:26:21 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Tue, 13 Jan 2015 16:26:21 +0000 (UTC) Cc: 19582@debbugs.gnu.org To: Jay Belanger Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Tue Jan 13 17:26:14 2015 Return-path: Envelope-to: geb-bug-gnu-emacs@m.gmane.org Original-Received: from lists.gnu.org ([208.118.235.17]) by plane.gmane.org with esmtp (Exim 4.69) (envelope-from ) id 1YB4IH-00031P-TL for geb-bug-gnu-emacs@m.gmane.org; Tue, 13 Jan 2015 17:26:14 +0100 Original-Received: from localhost ([::1]:40061 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1YB4IH-0004Y3-CG for geb-bug-gnu-emacs@m.gmane.org; Tue, 13 Jan 2015 11:26:13 -0500 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:60511) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1YB4IE-0004Xx-Br for bug-gnu-emacs@gnu.org; Tue, 13 Jan 2015 11:26:11 -0500 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1YB4I6-0006BL-Mi for bug-gnu-emacs@gnu.org; Tue, 13 Jan 2015 11:26:10 -0500 Original-Received: from debbugs.gnu.org ([140.186.70.43]:46752) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1YB4I6-0006BC-Jd for bug-gnu-emacs@gnu.org; Tue, 13 Jan 2015 11:26:02 -0500 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.80) (envelope-from ) id 1YB4I6-0004Tg-E0 for bug-gnu-emacs@gnu.org; Tue, 13 Jan 2015 11:26:02 -0500 X-Loop: help-debbugs@gnu.org In-Reply-To: <851tmyah3n.fsf@iznogoud.viz> Resent-From: Wolfgang Jenkner Original-Sender: "Debbugs-submit" Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Tue, 13 Jan 2015 16:26:02 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 19582 X-GNU-PR-Package: emacs X-GNU-PR-Keywords: patch Original-Received: via spool by 19582-submit@debbugs.gnu.org id=B19582.142116633517165 (code B ref 19582); Tue, 13 Jan 2015 16:26:02 +0000 Original-Received: (at 19582) by debbugs.gnu.org; 13 Jan 2015 16:25:35 +0000 Original-Received: from localhost ([127.0.0.1]:55612 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.80) (envelope-from ) id 1YB4He-0004Sm-Sd for submit@debbugs.gnu.org; Tue, 13 Jan 2015 11:25:35 -0500 Original-Received: from b2bfep13.mx.upcmail.net ([62.179.121.58]:41839) by debbugs.gnu.org with esmtp (Exim 4.80) (envelope-from ) id 1YB4Hb-0004SL-TH for 19582@debbugs.gnu.org; Tue, 13 Jan 2015 11:25:33 -0500 Original-Received: from edge12.upcmail.net ([192.168.13.82]) by b2bfep13.mx.upcmail.net (InterMail vM.8.01.05.11 201-2260-151-128-20120928) with ESMTP id <20150113162524.KBWX20529.b2bfep13-int.chello.at@edge12.upcmail.net> for <19582@debbugs.gnu.org>; Tue, 13 Jan 2015 17:25:24 +0100 Original-Received: from iznogoud.viz ([85.127.90.213]) by edge12.upcmail.net with edge id fURP1p0114cBfQ50CURP9V; Tue, 13 Jan 2015 17:25:24 +0100 X-SourceIP: 85.127.90.213 Original-Received: from wolfgang by iznogoud.viz with local (Exim 4.84 (FreeBSD)) (envelope-from ) id 1YB4HT-0004re-Du; Tue, 13 Jan 2015 17:25:23 +0100 User-Agent: Gnus/5.130012 (Ma Gnus v0.12) Emacs/25.0.50 (berkeley-unix) X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.15 Precedence: list X-detected-operating-system: by eggs.gnu.org: GNU/Linux 3.x X-Received-From: 140.186.70.43 X-BeenThere: bug-gnu-emacs@gnu.org List-Id: "Bug reports for GNU Emacs, the Swiss army knife of text editors" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Original-Sender: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Xref: news.gmane.org gmane.emacs.bugs:98310 Archived-At: On Tue, Jan 13 2015, Jay Belanger wrote: > Since 100 and (float 1 2) aren't the same, that might be a bug of some > kind. Sure, but (math-equal 100 '(float 1 2)) => t and (info "(calc) Predicates") states -- Function: math-equal x y Returns true if X and Y are numerically equal, either because they are `equal', or because their difference is `zerop'. [...] so, IIUC, mathematically, they are as equal as it gets in calc. On the other hand, I'm not sure if calculations with (float ...) are exact (if possible) in calc ?