220 19175 <2875623.yP5dYv2iLC@tjmaciei-mobl4> article Path: news.gmane.org!not-for-mail From: Thiago Macieira Newsgroups: gmane.comp.lang.c++.isocpp.proposals Subject: Re: Re: Point class Date: Wed, 22 Jul 2015 14:05:15 -0700 Lines: 27 Approved: news@gmane.org Message-ID: <2875623.yP5dYv2iLC@tjmaciei-mobl4> References: Reply-To: std-proposals@isocpp.org NNTP-Posting-Host: plane.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable X-Trace: ger.gmane.org 1437599128 25138 80.91.229.3 (22 Jul 2015 21:05:28 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Wed, 22 Jul 2015 21:05:28 +0000 (UTC) To: std-proposals@isocpp.org Original-X-From: std-proposals+bncBCB4TK757YBRBDULYCWQKGQECWZUZGA@isocpp.org Wed Jul 22 23:05:20 2015 Return-path: Envelope-to: gclcip-std-proposals@m.gmane.org Original-Received: from mail-la0-f72.google.com ([209.85.215.72]) by plane.gmane.org with esmtp (Exim 4.69) (envelope-from ) id 1ZI1Ca-0004OO-A5 for gclcip-std-proposals@m.gmane.org; Wed, 22 Jul 2015 23:05:20 +0200 Original-Received: by laef2 with SMTP id f2sf62270312lae.0 for ; Wed, 22 Jul 2015 14:05:19 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:from:to:subject:date:message-id:user-agent :in-reply-to:references:mime-version:content-transfer-encoding :content-type:x-original-sender:x-original-authentication-results :reply-to:precedence:mailing-list:list-id:x-spam-checked-in-group :list-post:list-help:list-archive:list-subscribe:list-unsubscribe; bh=mDPQhgduo/2a8+xLlTWJcj/z4SBe997+I0hdtj4mom0=; b=ZAxYhHGcbx/bZfKJRufnaUhG7ptZucFbufNJh8b8Y8FsS5bY1nSxkWZxC/2Xn2nktm +tYtdlsJc95qPM9jPX9AmPRs/hjnq2RUF7FsROWV+7o9rpjlYD08oA6yGt3Yda4iEOoT yVCQgGYAOIXJOHQXY3U37VIE34fze2ZNPtcb1aURbMtXW6W/NFpfwulzvosATfSSbkyK AAaodzErcJ0BV7+v71hv9VQ5as4gACcDTAzvEboeTZW5PAzRYZHe7ntX0BZsdM0/k+mu rDZu0EB8NddZ7wHGzYvpApXnPqMTXbyt7e1gfOX/DrEmxBZybkQMLXuPm X-Gm-Message-State: ALoCoQlVMFXKT7FrG4f0CL/UcH5AryZj4lKE4WXX5oq3mLHnHvRlbs80q4T/HnJ2FzTQFt08l53T X-Received: by 10.180.160.133 with SMTP id xk5mr7374032wib.1.1437599119815; Wed, 22 Jul 2015 14:05:19 -0700 (PDT) X-BeenThere: std-proposals@isocpp.org Original-Received: by 10.180.85.137 with SMTP id h9ls1323549wiz.37.canary; Wed, 22 Jul 2015 14:05:17 -0700 (PDT) X-Received: by 10.194.84.179 with SMTP id a19mr8454004wjz.29.1437599117899; Wed, 22 Jul 2015 14:05:17 -0700 (PDT) Original-Received: from gondolin.macieira.info (gondolin.macieira.info. [78.47.120.188]) by mx.google.com with ESMTP id eu13si26763122wid.52.2015.07.22.14.05.17 for ; Wed, 22 Jul 2015 14:05:17 -0700 (PDT) Received-SPF: pass (google.com: domain of thiago@macieira.org designates 78.47.120.188 as permitted sender) client-ip=78.47.120.188; Original-Received: from tjmaciei-mobl4.localnet (jfdmzpr06-ext.jf.intel.com [134.134.137.75]) by gondolin.macieira.info (Postfix) with ESMTPSA id 6073A11A7ED for ; Wed, 22 Jul 2015 14:05:17 -0700 (PDT) User-Agent: KMail/4.14.9 (Linux/4.0.5-3-desktop; KDE/4.14.9; x86_64; ; ) In-Reply-To: X-Original-Sender: thiago@macieira.org X-Original-Authentication-Results: mx.google.com; spf=pass (google.com: domain of thiago@macieira.org designates 78.47.120.188 as permitted sender) smtp.mail=thiago@macieira.org Precedence: list Mailing-list: list std-proposals@isocpp.org; contact std-proposals+owners@isocpp.org List-ID: X-Spam-Checked-In-Group: std-proposals@isocpp.org X-Google-Group-Id: 399137483710 List-Post: , List-Help: , List-Archive: List-Subscribe: , List-Unsubscribe: , Xref: news.gmane.org gmane.comp.lang.c++.isocpp.proposals:19175 Archived-At: On Wednesday 22 July 2015 21:40:13 David Haim wrote: > I'm sorry. but a point is not a vector. the standard must be mathematical > correct. The standard is mathematically incorrect by using imprecise floating point. 809.99f =3D 800.789978f =E2=88=83x,y, x =E2=89=A0 0 | x + y =3D y --=20 Thiago Macieira - thiago (AT) macieira.info - thiago (AT) kde.org Software Architect - Intel Open Source Technology Center PGP/GPG: 0x6EF45358; fingerprint: E067 918B B660 DBD1 105C 966C 33F5 F005 6EF4 5358 --=20 ---=20 You received this message because you are subscribed to the Google Groups "= ISO C++ Standard - Future Proposals" group. To unsubscribe from this group and stop receiving emails from it, send an e= mail to std-proposals+unsubscribe@isocpp.org. To post to this group, send email to std-proposals@isocpp.org. Visit this group at http://groups.google.com/a/isocpp.org/group/std-proposa= ls/. .