From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: Alexis Newsgroups: gmane.emacs.bugs Subject: bug#19025: 24.4; precision error when adding two floats Date: Wed, 12 Nov 2014 13:42:48 +1100 Message-ID: <87mw7x6smg.fsf@gmail.com> References: <87oasd6vl4.fsf@gmail.com> <87mw7xtan2.fsf@gmail.com> NNTP-Posting-Host: plane.gmane.org Mime-Version: 1.0 Content-Type: text/plain X-Trace: ger.gmane.org 1415760626 6544 80.91.229.3 (12 Nov 2014 02:50:26 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Wed, 12 Nov 2014 02:50:26 +0000 (UTC) To: 19025@debbugs.gnu.org Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Wed Nov 12 03:50:19 2014 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 1XoO0f-0001c0-UC for geb-bug-gnu-emacs@m.gmane.org; Wed, 12 Nov 2014 03:50:18 +0100 Original-Received: from localhost ([::1]:52203 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1XoO0f-0001kV-H9 for geb-bug-gnu-emacs@m.gmane.org; Tue, 11 Nov 2014 21:50:17 -0500 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:39759) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1XoO0W-0001hL-IO for bug-gnu-emacs@gnu.org; Tue, 11 Nov 2014 21:50:14 -0500 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1XoO0Q-0001CM-JO for bug-gnu-emacs@gnu.org; Tue, 11 Nov 2014 21:50:08 -0500 Original-Received: from debbugs.gnu.org ([140.186.70.43]:60811) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1XoO0Q-0001CE-HC for bug-gnu-emacs@gnu.org; Tue, 11 Nov 2014 21:50:02 -0500 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.80) (envelope-from ) id 1XoO0Q-0008MY-8l for bug-gnu-emacs@gnu.org; Tue, 11 Nov 2014 21:50:02 -0500 X-Loop: help-debbugs@gnu.org Resent-From: Alexis Original-Sender: "Debbugs-submit" Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Wed, 12 Nov 2014 02:50:02 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 19025 X-GNU-PR-Package: emacs X-GNU-PR-Keywords: notabug X-Debbugs-Original-To: bug-gnu-emacs@gnu.org Original-Received: via spool by submit@debbugs.gnu.org id=B.141576056332043 (code B ref -1); Wed, 12 Nov 2014 02:50:02 +0000 Original-Received: (at submit) by debbugs.gnu.org; 12 Nov 2014 02:49:23 +0000 Original-Received: from localhost ([127.0.0.1]:58024 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.80) (envelope-from ) id 1XoNzn-0008Kk-Io for submit@debbugs.gnu.org; Tue, 11 Nov 2014 21:49:23 -0500 Original-Received: from eggs.gnu.org ([208.118.235.92]:37848) by debbugs.gnu.org with esmtp (Exim 4.80) (envelope-from ) id 1XoNzm-0008Kb-3r for submit@debbugs.gnu.org; Tue, 11 Nov 2014 21:49:22 -0500 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1XoNzf-00012l-Q3 for submit@debbugs.gnu.org; Tue, 11 Nov 2014 21:49:21 -0500 Original-Received: from lists.gnu.org ([2001:4830:134:3::11]:45175) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1XoNzf-00012g-Nk for submit@debbugs.gnu.org; Tue, 11 Nov 2014 21:49:15 -0500 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:39524) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1XoNzZ-0001W1-2Z for bug-gnu-emacs@gnu.org; Tue, 11 Nov 2014 21:49:15 -0500 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1XoNzT-00011b-2v for bug-gnu-emacs@gnu.org; Tue, 11 Nov 2014 21:49:09 -0500 Original-Received: from mail-pa0-x231.google.com ([2607:f8b0:400e:c03::231]:47525) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1XoNzS-00011X-Rh for bug-gnu-emacs@gnu.org; Tue, 11 Nov 2014 21:49:03 -0500 Original-Received: by mail-pa0-f49.google.com with SMTP id lj1so11874297pab.36 for ; Tue, 11 Nov 2014 18:49:02 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=references:from:to:subject:date:in-reply-to:message-id:mime-version :content-type; bh=gb0j4kp2zGpa2Pi8fN4WhDUrxdrd9vKa/c6azqM5DSs=; b=QOt0+3uJaytUbLFrIag0LkncEYOAAbBuRXNgRT2nyHdzdhzrmfmrvDh5gPxWQlqcA0 ITIPITBDU8Rm2/NN2EHO87s0O3pF4PJzZL5cyjZ0CJc7T15xy7KqFX2NnieCUF5dXlBR eSNoEDBDLa2qDkkbXJefZP2/3pirBHUpzoe0+u538jdlXDySXe7PScbi/hhjeA0d2sqz 8cKTbrmXHC2vdMOBMrwvFGGP3/w8bdaGMO9u878fldYHw+rCqAvAAuU3fJlLKAtSmpEg 0mMqwakK/2ErrmIPHHNdu7gKGoF7SqDPIATHo1lhnrluzDxADYPX60IU3Mm7vfrDfHaP BtvA== X-Received: by 10.70.129.135 with SMTP id nw7mr16752778pdb.129.1415760541856; Tue, 11 Nov 2014 18:49:01 -0800 (PST) Original-Received: from localhost (ppp118-209-92-67.lns20.mel4.internode.on.net. [118.209.92.67]) by mx.google.com with ESMTPSA id nb3sm8180383pdb.18.2014.11.11.18.48.59 for (version=TLSv1.2 cipher=RC4-SHA bits=128/128); Tue, 11 Nov 2014 18:49:00 -0800 (PST) In-reply-to: <87mw7xtan2.fsf@gmail.com> X-detected-operating-system: by eggs.gnu.org: Error: Malformed IPv6 address (bad octet value). X-detected-operating-system: by eggs.gnu.org: Error: Malformed IPv6 address (bad octet value). 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:95899 Jay Belanger writes: >> Isn't this an artifact of the nature of floating-point arithmetic, >> rather than an issue with Emacs per se? > > Yes, although it probably wouldn't be a bad idea to point out this > issue in the Elisp documentation. *nod* And perhaps mention Calc functions, which can work with a specified precision? (Assuming we can't simply link to e.g. http://floating-point-gui.de/ :-) ) Alexis.