Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]

Groups > comp.lang.python > #93460

Re: Bug in floating point multiplication

Path csiph.com!optima2.xanadu-bbs.net!xanadu-bbs.net!feeder.erje.net!1.eu.feeder.erje.net!newsfeed.xs4all.nl!newsfeed7.news.xs4all.nl!post.news.xs4all.nl!not-for-mail
Return-Path <python-python-list@m.gmane.org>
X-Original-To python-list@python.org
Delivered-To python-list@mail.python.org
X-Spam-Status OK 0.004
X-Spam-Evidence '*H*': 0.99; '*S*': 0.00; 'skip:/ 10': 0.07; '2147483647': 0.09; 'received:80.91': 0.09; 'received:80.91.229': 0.09; 'received:gmane.org': 0.09; 'received:list': 0.09; 'subject:skip:m 10': 0.09; 'python': 0.11; '-i386': 0.16; 'do!': 0.16; 'osx': 0.16; 'received:80.91.229.3': 0.16; 'received:plane.gmane.org': 0.16; 'wrote:': 0.16; '64-bit': 0.22; 'bit': 0.23; 'header:User-Agent:1': 0.26; 'header:X-Complaints- To:1': 0.26; 'to:addr:python-list': 0.35; 'subject:: ': 0.37; 'charset:us-ascii': 0.37; 'mac': 0.37; 'received:org': 0.38; 'to:addr:python.org': 0.39; 'sure': 0.40; 'received:204': 0.75; 'article': 0.77; 'mac.': 0.84; 'processor.': 0.84
X-Injected-Via-Gmane http://gmane.org/
To python-list@python.org
From Ned Deily <nad@acm.org>
Subject Re: Bug in floating point multiplication
Date Thu, 02 Jul 2015 22:07:31 -0700
References <55955048$0$1662$c3e8da3$5496439d@news.astraweb.com> <559579bb$0$2921$e4fe514c@news.xs4all.nl>
Mime-Version 1.0
Content-Type text/plain; charset=US-ASCII
Content-Transfer-Encoding 7bit
X-Gmane-NNTP-Posting-Host 204.28.118.160
User-Agent MT-NewsWatcher/3.5.3b3 (Intel Mac OS X)
X-BeenThere python-list@python.org
X-Mailman-Version 2.1.20+
Precedence list
List-Id General discussion list for the Python programming language <python-list.python.org>
List-Unsubscribe <https://mail.python.org/mailman/options/python-list>, <mailto:python-list-request@python.org?subject=unsubscribe>
List-Archive <http://mail.python.org/pipermail/python-list/>
List-Post <mailto:python-list@python.org>
List-Help <mailto:python-list-request@python.org?subject=help>
List-Subscribe <https://mail.python.org/mailman/listinfo/python-list>, <mailto:python-list-request@python.org?subject=subscribe>
Newsgroups comp.lang.python
Message-ID <mailman.265.1435900060.3674.python-list@python.org> (permalink)
Lines 20
NNTP-Posting-Host 2001:888:2000:d::a6
X-Trace 1435900060 news.xs4all.nl 2887 [2001:888:2000:d::a6]:45886
X-Complaints-To abuse@xs4all.nl
Xref csiph.com comp.lang.python:93460

Show key headers only | View raw

In article <559579bb$0$2921$e4fe514c@news.xs4all.nl>,
 Irmen de Jong <irmen.NOSPAM@xs4all.nl> wrote:
> Tested on Mac OSX 10.10.4, with a 64-bit core2duo processor. Below are all 
> 64-bit python
> implementations:
> 2.6.9 (apple supplied), 2.7.6 (apple supplied), 3.4.3 (homebrew), and 
> pypy-2.6.0
> (homebrew). I don't have any 32 bit Python implementations on the mac.

Sure you do!

$ /usr/bin/python2.7 -c 'import sys;print(sys.maxsize)'
9223372036854775807
$ arch -i386 /usr/bin/python2.7 -c 'import sys;print(sys.maxsize)'
2147483647

-- 
 Ned Deily,
 nad@acm.org

Back to comp.lang.python | Previous | Next — Previous in thread | Next in thread | Find similar | Unroll thread

Thread

Bug in floating point multiplication Steven D'Aprano <steve@pearwood.info> - 2015-07-03 00:52 +1000
  Re: Bug in floating point multiplication Michael Poeltl <michael.poeltl@univie.ac.at> - 2015-07-02 17:10 +0200
  Re: Bug in floating point multiplication Chris Angelico <rosuav@gmail.com> - 2015-07-03 01:21 +1000
  Re: Bug in floating point multiplication Robin Becker <robin@reportlab.com> - 2015-07-02 16:24 +0100
  Re: Bug in floating point multiplication Paul Rubin <no.email@nospam.invalid> - 2015-07-02 08:26 -0700
    Re: Bug in floating point multiplication Chris Angelico <rosuav@gmail.com> - 2015-07-03 01:34 +1000
      Re: Bug in floating point multiplication Steven D'Aprano <steve@pearwood.info> - 2015-07-03 01:41 +1000
    Re: Bug in floating point multiplication Ian Kelly <ian.g.kelly@gmail.com> - 2015-07-02 09:38 -0600
  Re: Bug in floating point multiplication Vincent Vande Vyvre <vincent.vande.vyvre@telenet.be> - 2015-07-02 17:15 +0200
  Re: Bug in floating point multiplication Ian Kelly <ian.g.kelly@gmail.com> - 2015-07-02 09:28 -0600
  Re: Bug in floating point multiplication Robin Becker <robin@reportlab.com> - 2015-07-02 16:29 +0100
  Re: Bug in floating point multiplication Ian Kelly <ian.g.kelly@gmail.com> - 2015-07-02 09:32 -0600
  Re: Bug in floating point multiplication Steven D'Aprano <steve@pearwood.info> - 2015-07-03 01:42 +1000
  Re: Bug in floating point multiplication duncan smith <buzzard@invalid.invalid> - 2015-07-02 17:08 +0100
  Re: Bug in floating point multiplication MRAB <python@mrabarnett.plus.com> - 2015-07-02 17:20 +0100
  Re: Bug in floating point multiplication Tim Chase <python.list@tim.thechases.com> - 2015-07-02 11:59 -0500
  Re: Bug in floating point multiplication Irmen de Jong <irmen.NOSPAM@xs4all.nl> - 2015-07-02 19:49 +0200
    Re: Bug in floating point multiplication Ned Deily <nad@acm.org> - 2015-07-02 22:07 -0700
      Re: Bug in floating point multiplication Irmen de Jong <irmen.NOSPAM@xs4all.nl> - 2015-07-03 18:27 +0200
  Re: Bug in floating point multiplication Laurent Pointal <laurent.pointal@free.fr> - 2015-07-02 23:12 +0200
  Re: Bug in floating point multiplication Oscar Benjamin <oscar.j.benjamin@gmail.com> - 2015-07-03 16:13 +0100
  Re: Bug in floating point multiplication Laura Creighton <lac@openend.se> - 2015-07-05 00:54 +0200
  Re: Bug in floating point multiplication Peter Otten <__peter__@web.de> - 2015-07-05 09:38 +0200

csiph-web