From debbugs-submit-bounces@debbugs.gnu.org Thu Nov 18 12:30:32 2010 Received: (at submit) by debbugs.gnu.org; 18 Nov 2010 17:30:32 +0000 Received: from localhost ([127.0.0.1] helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.69) (envelope-from ) id 1PJ8Jb-0005YO-Cc for submit@debbugs.gnu.org; Thu, 18 Nov 2010 12:30:31 -0500 Received: from eggs.gnu.org ([140.186.70.92]) by debbugs.gnu.org with esmtp (Exim 4.69) (envelope-from ) id 1PJ8JZ-0005YJ-GE for submit@debbugs.gnu.org; Thu, 18 Nov 2010 12:30:30 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1PJ8OS-0005Ds-KT for submit@debbugs.gnu.org; Thu, 18 Nov 2010 12:35:34 -0500 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on eggs.gnu.org X-Spam-Level: X-Spam-Status: No, score=-1.9 required=5.0 tests=BAYES_00,T_RP_MATCHES_RCVD autolearn=unavailable version=3.3.1 Received: from lists.gnu.org ([199.232.76.165]:37246) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1PJ8OS-0005Do-Gb for submit@debbugs.gnu.org; Thu, 18 Nov 2010 12:35:32 -0500 Received: from [140.186.70.92] (port=39914 helo=eggs.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1PJ8OR-0006Qo-I4 for bug-coreutils@gnu.org; Thu, 18 Nov 2010 12:35:32 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1PJ8OQ-0005D5-BQ for bug-coreutils@gnu.org; Thu, 18 Nov 2010 12:35:31 -0500 Received: from smtp.cs.ucla.edu ([131.179.128.62]:46096) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1PJ8OQ-0005Bs-69; Thu, 18 Nov 2010 12:35:30 -0500 Received: from localhost (localhost.localdomain [127.0.0.1]) by smtp.cs.ucla.edu (Postfix) with ESMTP id C431A39E814E; Thu, 18 Nov 2010 09:35:26 -0800 (PST) X-Virus-Scanned: amavisd-new at smtp.cs.ucla.edu Received: from smtp.cs.ucla.edu ([127.0.0.1]) by localhost (smtp.cs.ucla.edu [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id aBIbm73nxr6o; Thu, 18 Nov 2010 09:35:25 -0800 (PST) Received: from [131.179.64.200] (Penguin.CS.UCLA.EDU [131.179.64.200]) by smtp.cs.ucla.edu (Postfix) with ESMTPSA id 8CFD839E8108; Thu, 18 Nov 2010 09:35:25 -0800 (PST) Message-ID: <4CE563D8.80607@cs.ucla.edu> Date: Thu, 18 Nov 2010 09:35:20 -0800 From: Paul Eggert Organization: UCLA Computer Science Department User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.9.1.15) Gecko/20101027 Thunderbird/3.0.10 MIME-Version: 1.0 To: Jim Meyering Subject: Re: [PATCH] ftoastr: new module, for lossless conversion of floats to short strings References: <4CE44288.9060800@cs.ucla.edu> <87aal6wpvy.fsf@meyering.net> In-Reply-To: <87aal6wpvy.fsf@meyering.net> Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.6 (newer, 3) X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.6 (newer, 2) X-Spam-Score: -5.0 (-----) X-Debbugs-Envelope-To: submit Cc: Bug-coreutils , Bug-gnulib X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.11 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: debbugs-submit-bounces@debbugs.gnu.org Errors-To: debbugs-submit-bounces@debbugs.gnu.org X-Spam-Score: -5.0 (-----) On 11/18/10 08:36, Jim Meyering wrote: > Before I'd looked through the code I started thinking this might > be useful in avoiding snprintf's unhealthy need to malloc. > Then I saw that it uses snprintf. Oh well ;-) There's a comment on how to fix that, for the common cases of double on float on hosts with IEEE floating point and 64-bit ints. It's a paper published earlier this year by Florian Loitsch . Not only would this fix the malloc problem, it would run rings around sprintf, performance-wise, on all libc implementations that I know of that print floating-point numbers accurately. The idea behind the latest checkin has been in Emacs for years, but the immediate prompt for it was a bug that I found in coreutils od, when I attempted to use it to generate floating point numbers at random (by reading /dev/urandom). The generated numbers turned out to be non-random, and I tracked it down to a bug in od. I'll check in a fix to coreutils shortly. From debbugs-submit-bounces@debbugs.gnu.org Tue Apr 19 03:12:07 2011 Received: (at control) by debbugs.gnu.org; 19 Apr 2011 07:12:08 +0000 Received: from localhost ([127.0.0.1] helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.69) (envelope-from ) id 1QC56V-0008Ci-Jp for submit@debbugs.gnu.org; Tue, 19 Apr 2011 03:12:07 -0400 Received: from mx.meyering.net ([82.230.74.64]) by debbugs.gnu.org with esmtp (Exim 4.69) (envelope-from ) id 1QC56T-0008CD-Ex for control@debbugs.gnu.org; Tue, 19 Apr 2011 03:12:05 -0400 Received: by rho.meyering.net (Acme Bit-Twister, from userid 1000) id E3EA0600FB; Tue, 19 Apr 2011 09:11:59 +0200 (CEST) From: Jim Meyering To: control@debbugs.gnu.org Subject: Re: ftoastr: new module, for lossless conversion of floats to short strings Date: Tue, 19 Apr 2011 09:11:59 +0200 Message-ID: <87tydu1zr4.fsf@rho.meyering.net> Lines: 4 MIME-Version: 1.0 Content-Type: text/plain X-Spam-Score: -5.9 (-----) X-Debbugs-Envelope-To: control X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.11 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: debbugs-submit-bounces@debbugs.gnu.org Errors-To: debbugs-submit-bounces@debbugs.gnu.org X-Spam-Score: -5.9 (-----) close 7436 thanks resolved months ago From unknown Fri Aug 15 17:19:34 2025 Received: (at fakecontrol) by fakecontrolmessage; To: internal_control@debbugs.gnu.org From: Debbugs Internal Request Subject: Internal Control Message-Id: bug archived. 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