Path: csiph.com!v102.xanadu-bbs.net!xanadu-bbs.net!feeder.erje.net!eu.feeder.erje.net!newsfeed.xs4all.nl!newsfeed4a.news.xs4all.nl!xs4all!newsgate.cistron.nl!newsgate.news.xs4all.nl!post.news.xs4all.nl!not-for-mail Return-Path: X-Original-To: python-list@python.org Delivered-To: python-list@mail.python.org X-Spam-Status: OK 0.022 X-Spam-Evidence: '*H*': 0.96; '*S*': 0.00; 'correct.': 0.07; 'lawrence': 0.09; '-1,': 0.16; '-1.0': 0.16; 'subject:case': 0.16; 'wrote:': 0.18; 'thu,': 0.19; 'aug': 0.22; 'looks': 0.24; 'header :In-Reply-To:1': 0.27; 'url:bugs': 0.29; 'am,': 0.29; 'message- id:@mail.gmail.com': 0.30; '>>>>': 0.31; 'url:python': 0.33; 'but': 0.35; 'received:google.com': 0.35; '14,': 0.36; 'url:org': 0.36; 'should': 0.36; 'to:addr:python-list': 0.38; 'to:addr:python.org': 0.39; 'negative': 0.60 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:in-reply-to:references:from:date:message-id:subject:to :content-type; bh=f9R5EXAcid5492HFxCFv9G6crAlKP56/5joW1uAzgxw=; b=a7SzwIJRjSAzRtNu+445LqtnabVx0spZgwmZMlhd7EfqogZlPEhLKsaiOQmc2UAYpo QPyYpwBTSaef7dDqx0j0uJcBHkAQpq+FcNEaDbgPONf7voSeWocEseXPf3s5C1MGAHZK USfFLvWhpTLS+mwVA4ADKqpSbpwWpa6UEYdcGFvSgMXFmuyOV/UowpYopJyDP/wZ3+B+ agxMubIi5hjZQHADdcbdRKcgVIHz5aqjohpGDXXKNOv8+xaHspBFkwEYRjWsULyEJMzS x/bXJCg30ygay322bfwlRR+fSTtXno+P53pxFnnFBeamn7GQG1uTTrdxtXVUF7OHwij3 yZuw== X-Received: by 10.68.204.134 with SMTP id ky6mr5968953pbc.61.1408038430740; Thu, 14 Aug 2014 10:47:10 -0700 (PDT) MIME-Version: 1.0 In-Reply-To: References: From: Ian Kelly Date: Thu, 14 Aug 2014 11:46:30 -0600 Subject: Re: Odd floor-division corner case To: Python Content-Type: text/plain; charset=UTF-8 X-BeenThere: python-list@python.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: General discussion list for the Python programming language List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Newsgroups: comp.lang.python Message-ID: Lines: 12 NNTP-Posting-Host: 2001:888:2000:d::a6 X-Trace: 1408038440 news.xs4all.nl 2962 [2001:888:2000:d::a6]:56623 X-Complaints-To: abuse@xs4all.nl Xref: csiph.com comp.lang.python:76325 On Thu, Aug 14, 2014 at 11:31 AM, Mark Lawrence wrote: > From http://bugs.python.org/issue22198 > >>>> -0.5 // float('inf') > -1.0 Looks like the result is the same for any negative dividend. > What should it be? It's surprising, but I think it's correct. A negative infinitesimal would be less than 0, so its floor should be -1, not 0.