220 40386 article Path: news.gmane.org!.POSTED!not-for-mail From: Ville Voutilainen Newsgroups: gmane.comp.lang.c++.isocpp.proposals Subject: Re: Optional fixed point arithmetic was standardised into C in 2008. Why doesn't C++ adopt it? Date: Mon, 8 Oct 2018 21:32:32 +0300 Lines: 18 Approved: news@gmane.org Message-ID: References: Reply-To: std-proposals@isocpp.org NNTP-Posting-Host: blaine.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset="UTF-8" X-Trace: blaine.gmane.org 1539023441 6012 195.159.176.226 (8 Oct 2018 18:30:41 GMT) X-Complaints-To: usenet@blaine.gmane.org NNTP-Posting-Date: Mon, 8 Oct 2018 18:30:41 +0000 (UTC) To: "ISO C++ Standard - Future Proposals" Original-X-From: std-proposals+bncBC5JHI7A7ALRBTOF53OQKGQERXIGKZQ@isocpp.org Mon Oct 08 20:30:37 2018 Return-path: Envelope-to: gclcip-std-proposals@m.gmane.org Original-Received: from mail-oi1-f198.google.com ([209.85.167.198]) by blaine.gmane.org with esmtp (Exim 4.84_2) (envelope-from ) id 1g9aIe-0001Qe-EJ for gclcip-std-proposals@m.gmane.org; Mon, 08 Oct 2018 20:30:36 +0200 Original-Received: by mail-oi1-f198.google.com with SMTP id w198-v6sf15510896oiw.19 for ; Mon, 08 Oct 2018 11:32:47 -0700 (PDT) ARC-Seal: i=2; a=rsa-sha256; t=1539023566; cv=pass; d=google.com; s=arc-20160816; b=CTGCvGV/YqSzilYFzm7W32AUZyka6SNXw59CKfR45LucuYXiypBODugWjsrwX2CnUP rjho4Q9xib/IrOWTOCcECVhtltkNthS5q4M5Xa5pZRc5Pm/M9Z66vpiOxnzpK+NEsMdO 3+67JhdV13PH/eWZUoRq6g1Cuc25wmgSJ6W3rWnsjY3En2Qb0ofvA/OWBTZR0zu6ztGr fS13eILI9miUd4MVZ6P6g/KBGUxZu/2spnm31wDXPfxxAzfIOxgBMTDtrLGHdaIu0/cq IosBsyD8RnqrI2WVh9oPXKaAsAKxExvKSn+lmeMwzofcMNEjCGdHKqpcGthLxGo7bTn9 9d4Q== ARC-Message-Signature: i=2; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-unsubscribe:list-subscribe:list-archive:list-help:list-post :list-id:mailing-list:precedence:reply-to:to:subject:message-id:date :from:in-reply-to:references:mime-version:dkim-signature; bh=xCpseVEjjsK5eK+fXw2GJ3263eFbggq4f3giZII8Yu8=; b=ZQt4YWa50omBLOzkuxtSmAYyvUklDVFC0NQH6zM5+ss68QtS8oQ4KC+xZ234I5+JqZ GTwBkTXPUyZCSp0Zu7KTENmYGrE7zrs/9IqKj+s+Y1EDAV72yYV+LoY89S0Eye3QLBs+ Sw8jB9oJ5ANAO2j0aM47njl8ULD3P3IvW26+NQMLvzV/QM6gMbFyzaohOHL0TIhUhSOi jikG/DGYxxMdo9rTCm2F/NDTLevyXGCdcFSRydjUjJdIEDKhr4AoTD2gs+VfD9B1NmhA syBXireMnta5HKm41WoFR4e7DyqJLScgFax+5qN8v8VwlhseeKu+O1uSE0n0cn1YK4Ep QoWg== ARC-Authentication-Results: i=2; mx.google.com; dkim=pass header.i=@gmail.com header.s=20161025 header.b=EA9Q22RR; spf=pass (google.com: domain of ville.voutilainen@gmail.com designates 209.85.220.41 as permitted sender) smtp.mailfrom=ville.voutilainen@gmail.com; dmarc=pass (p=NONE sp=QUARANTINE dis=NONE) header.from=gmail.com DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=isocpp-org.20150623.gappssmtp.com; s=20150623; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :x-original-sender:x-original-authentication-results:reply-to :precedence:mailing-list:list-id:list-post:list-help:list-archive :list-subscribe:list-unsubscribe; bh=xCpseVEjjsK5eK+fXw2GJ3263eFbggq4f3giZII8Yu8=; b=GFbkvpO/rnjT1poZMB48ASPPyWDVCug54MufMZqP6ujPgAX2gcKDhAdOEXpd3YZNN1 Msko4Uj8mYLlsgt5pDe6sj4XhWYaewJDhBdGURGXCK3ktSNgsQB2L4o8SXo7e3RcVzkw ewMlN3mrd7Y3k9BzUR7KclhrE7NQ44BOgHFVc2iZpq6FrvCQE5poPhym5eYe3UM71HBK BWlJOxxrL09irbsWCPNbsqaO1Cio/zKUHmqFbwhaeHXPhLypBjk3RJ5hz29tcuF1630x KfbVZykLfJM7QBfa3no0bxpUwe+Mk2gkOw8vdRZydJLTQcfOJRXsfT5bQS5gO3Km4IuE glag== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to: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=xCpseVEjjsK5eK+fXw2GJ3263eFbggq4f3giZII8Yu8=; b=cWCLcsvfo5X/fVpl10EvpC2C++y1sqmUAf90eW3MleeldNIxC1+6aX7kmlCQHAecOm rCiB8j8nigIndp3YgcJq/yk2GUt0VJ8cyTJySlWUgWyAa9UJ93xXWROzvuRUNd5N9SGI Q61nvxiNLDPa8Np2xCWTMzaYPY2uB/zUrvIYIPo2y7mkHGkxi7J58fs5KcE6/kAoUOxj VavFxKbYmwE0i8AIEFiQvoHqf8rEgT0M4ZltZiU2BuoNiE+lMLgud+Kho1SRKNuJ0myO So/sn5E3+nThhP5vN3+W0J0HwY8zKFy9IjFmLpGrlSItHxfleuHtEUfFofeMAyN2/i4o GVcQ== X-Gm-Message-State: ABuFfohZXLjJKf3/nQ1zcHWWig8i0xGTV6ZrDF2vrlOmtl8pYowlewMG 9dmUzklfeeesTxVJ37RItESBGA== X-Google-Smtp-Source: ACcGV61vo7OqzpObubG4bVY5QWUMviqL5NkvKJIBEZRiycrCmNNT7I8KN/AIZxqE4vBGswCDAVrB9w== X-Received: by 2002:a9d:3284:: with SMTP id u4-v6mr1996110otb.32.1539023566577; Mon, 08 Oct 2018 11:32:46 -0700 (PDT) X-BeenThere: std-proposals@isocpp.org Original-Received: by 2002:aca:bdc6:: with SMTP id n189-v6ls717323oif.9.gmail; Mon, 08 Oct 2018 11:32:45 -0700 (PDT) X-Received: by 2002:aca:c701:: with SMTP id x1-v6mr5806441oif.66.1539023565472; Mon, 08 Oct 2018 11:32:45 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1539023565; cv=none; d=google.com; s=arc-20160816; b=Lm/5jZL3LJ/9iQchKNvW+gakqv3Gaw8G++G372YZGQEcpQiy+R5lGJaEzqfcx3zhr0 lrchd1katbPXMWEEyjwsBlwdzti+M9Qq696du1rsyh0qpqOyCQWG1cZVR/k8pxa7rkt4 hJNIENyaG5Z9Sregn3dxlGKxYFTuVsmZf5gMc198pIQ1YABn0EVa1M42JPlbUD91xqIh wQHRTzrFmUKCfiUabOFANRacfcnCsJuXqnkfbZzvci51/uRCZsXDS/rUhjm6Ha1WmHV2 rkodG7di4TdY6KMbVAkAwyt3lnmhbUTNDqH5n8qkAW7Stv/4cBA2ej5Kp6JUmGrIsvDH gtuw== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=to:subject:message-id:date:from:in-reply-to:references:mime-version :dkim-signature; bh=9ieDEoPz9nweiJrV58VNl9cEWOGIRNrxGouLndqaYCk=; b=VflRuq0hSTKP+dBcf2j6YNn1q5nsceNTlP452GaTCZOKYLv8n1RSgHx5AriDake+1u OMWYjva4FiYfzn4+raaIdfBiu0cPOJwCC6hQpZ8mOtlz/ocLHoti1AjpE1epYHjIGIW4 BhMANSUzuru9etaYs+dHkBhYiEHw8jj8CTO42SbPDFvPbdICdv0gruO7y6DobbETE2XY NIqAxxI7A8b3bV/4snBzKz1ESfJehRNrwBqsJkzVL8N6GW0JnQIZqHaBlWnw8LfLMQQp QplnNNyDoEc7c/dKuCwoURDy4QVL1AAszWDxjJwfkrrlYBBESpyT/e17MLHW/nvCYqyf SM/A== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@gmail.com header.s=20161025 header.b=EA9Q22RR; spf=pass (google.com: domain of ville.voutilainen@gmail.com designates 209.85.220.41 as permitted sender) smtp.mailfrom=ville.voutilainen@gmail.com; dmarc=pass (p=NONE sp=QUARANTINE dis=NONE) header.from=gmail.com Original-Received: from mail-sor-f41.google.com (mail-sor-f41.google.com. [209.85.220.41]) by mx.google.com with SMTPS id r14sor8903784otc.80.2018.10.08.11.32.45 for (Google Transport Security); Mon, 08 Oct 2018 11:32:45 -0700 (PDT) Received-SPF: pass (google.com: domain of ville.voutilainen@gmail.com designates 209.85.220.41 as permitted sender) client-ip=209.85.220.41; X-Received: by 2002:a9d:286e:: with SMTP id h43mr13500100otd.89.1539023564960; Mon, 08 Oct 2018 11:32:44 -0700 (PDT) In-Reply-To: X-Original-Sender: ville.voutilainen@gmail.com X-Original-Authentication-Results: mx.google.com; dkim=pass header.i=@gmail.com header.s=20161025 header.b=EA9Q22RR; spf=pass (google.com: domain of ville.voutilainen@gmail.com designates 209.85.220.41 as permitted sender) smtp.mailfrom=ville.voutilainen@gmail.com; dmarc=pass (p=NONE sp=QUARANTINE dis=NONE) header.from=gmail.com 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:40386 Archived-At: On Mon, 8 Oct 2018 at 21:25, Niall Douglas wrote: > > So, learned something new from WG14 today, namely that C standardised optional fixed point arithmetic back in 2004, with a second edition in 2008. I didn't know that before. Here is a pre-publication draft of the standard ISO/IEC TR 18037:2008: > > http://www.open-std.org/jtc1/sc22/wg14/www/docs/n1169.pdf > > Why doesn't WG21 simply adopt this instead of the (library) fixed point arithmetic proposals currently before it? Probably for the same reason why complex is a library type in C++; WG21 thinks it can do better with a library approach than with a built-in one. -- 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 email to std-proposals+unsubscribe@isocpp.org. To post to this group, send email to std-proposals@isocpp.org. To view this discussion on the web visit https://groups.google.com/a/isocpp.org/d/msgid/std-proposals/CAFk2RUY%2BQC2NN5qiSzyn_rOvJfY-B4F3t3RqJrUZVA2Jvmd77g%40mail.gmail.com. .