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

Groups > comp.lang.python > #111441

Re: Curious Omission In New-Style Formats

Path csiph.com!fu-berlin.de!uni-berlin.de!not-for-mail
From Robert Kern <robert.kern@gmail.com>
Newsgroups comp.lang.python
Subject Re: Curious Omission In New-Style Formats
Date Thu, 14 Jul 2016 16:17:35 +0100
Lines 37
Message-ID <mailman.4.1468509468.2307.python-list@python.org> (permalink)
References <834b1cce-38dd-474c-8915-4ff1cd6b27ec@googlegroups.com> <mailman.180.1468249505.2295.python-list@python.org> <5783c91e$0$1622$c3e8da3$5496439d@news.astraweb.com> <CALwzid=r90j900FMJDN7YLbowmauB4SDifoHZFimPa2DvqMZ6Q@mail.gmail.com> <mailman.185.1468262372.2295.python-list@python.org> <57846636$0$1621$c3e8da3$5496439d@news.astraweb.com> <CALwzidknRVWMW214+MxZfhHh=EG_RYU499fav+WceLo1O2MsuQ@mail.gmail.com> <mailman.31.1468390920.21009.python-list@python.org> <06f2dedb-ce7a-4ca8-9fe8-8dba36f3d3ba@googlegroups.com> <CALwzidnhLDsF3wE-0398Y2H+x7CeN1-24LJ+KYQA+Tjw1KPnSA@mail.gmail.com> <mailman.55.1468457173.21009.python-list@python.org> <76762c79-a85d-48f1-8132-5decd10ce4f1@googlegroups.com> <CALwzidmv_a5Uc0b8xF9Jys_=i_c7SpjHDOWcdACdtErWToqy7Q@mail.gmail.com> <mailman.58.1468473566.21009.python-list@python.org> <57874385$0$1501$c3e8da3$5496439d@news.astraweb.com> <CALwzidmrPtCEM7ufb+iF2hiJTqae14mhDr2SO4E-HasPhUS3nA@mail.gmail.com> <nm8aeb$52e$1@ger.gmane.org>
Mime-Version 1.0
Content-Type text/plain; charset=utf-8; format=flowed
Content-Transfer-Encoding 7bit
X-Trace news.uni-berlin.de j5QaOsOeFRiC6sF2u10BqQGhBRqOfn7YwMP+CAmXaFKw==
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 0.017
X-Spam-Evidence '*H*': 0.97; '*S*': 0.00; 'integers': 0.09; 'received:80.91': 0.09; 'received:80.91.229': 0.09; 'received:gmane.org': 0.09; 'received:list': 0.09; 'underlying': 0.09; 'properly': 0.15; '2016': 0.16; 'kern': 0.16; 'received:80.91.229.3': 0.16; 'received:io': 0.16; 'received:plane.gmane.org': 0.16; 'received:psf.io': 0.16; 'wrote:': 0.16; 'say,': 0.18; '>>>': 0.20; 'either.': 0.22; 'interpret': 0.22; 'am,': 0.23; 'header:In-Reply-To:1': 0.24; 'wondering': 0.25; 'header:User-Agent:1': 0.26; 'header:X -Complaints-To:1': 0.26; '14,': 0.27; 'sequence': 0.27; 'specifically': 0.28; "i'm": 0.30; 'point': 0.33; 'attempt': 0.35; 'robert': 0.35; 'but': 0.36; 'to:addr:python-list': 0.36; 'subject:: ': 0.37; 'say': 0.37; 'received:org': 0.37; 'subject:-': 0.39; 'to:addr:python.org': 0.40; 'called': 0.40; 'term': 0.60; 'your': 0.60; 'side': 0.62; 'more': 0.63; 'necessarily': 0.63; 'our': 0.64; 'world': 0.64; 'believe': 0.66; 'thursday': 0.66; 'jul': 0.72; 'eco': 0.84; 'terrible': 0.84
X-Injected-Via-Gmane http://gmane.org/
X-Gmane-NNTP-Posting-Host uk.enthought.com
User-Agent Mozilla/5.0 (Macintosh; Intel Mac OS X 10.11; rv:45.0) Gecko/20100101 Thunderbird/45.2.0
In-Reply-To <CALwzidmrPtCEM7ufb+iF2hiJTqae14mhDr2SO4E-HasPhUS3nA@mail.gmail.com>
X-BeenThere python-list@python.org
X-Mailman-Version 2.1.22
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>
X-Mailman-Original-Message-ID <nm8aeb$52e$1@ger.gmane.org>
X-Mailman-Original-References <834b1cce-38dd-474c-8915-4ff1cd6b27ec@googlegroups.com> <mailman.180.1468249505.2295.python-list@python.org> <5783c91e$0$1622$c3e8da3$5496439d@news.astraweb.com> <CALwzid=r90j900FMJDN7YLbowmauB4SDifoHZFimPa2DvqMZ6Q@mail.gmail.com> <mailman.185.1468262372.2295.python-list@python.org> <57846636$0$1621$c3e8da3$5496439d@news.astraweb.com> <CALwzidknRVWMW214+MxZfhHh=EG_RYU499fav+WceLo1O2MsuQ@mail.gmail.com> <mailman.31.1468390920.21009.python-list@python.org> <06f2dedb-ce7a-4ca8-9fe8-8dba36f3d3ba@googlegroups.com> <CALwzidnhLDsF3wE-0398Y2H+x7CeN1-24LJ+KYQA+Tjw1KPnSA@mail.gmail.com> <mailman.55.1468457173.21009.python-list@python.org> <76762c79-a85d-48f1-8132-5decd10ce4f1@googlegroups.com> <CALwzidmv_a5Uc0b8xF9Jys_=i_c7SpjHDOWcdACdtErWToqy7Q@mail.gmail.com> <mailman.58.1468473566.21009.python-list@python.org> <57874385$0$1501$c3e8da3$5496439d@news.astraweb.com> <CALwzidmrPtCEM7ufb+iF2hiJTqae14mhDr2SO4E-HasPhUS3nA@mail.gmail.com>
Xref csiph.com comp.lang.python:111441

Show key headers only | View raw

On 2016-07-14 15:30, Ian Kelly wrote:
> On Jul 14, 2016 1:52 AM, "Steven D'Aprano"
> <steve+comp.lang.python@pearwood.info> wrote:
>>
>> On Thursday 14 July 2016 15:18, Ian Kelly wrote:
>>
>>> Side note, neither do floating point numbers, really; what is often
>>> called the mantissa is more properly known as the significand. But
>>> integers don't have that either.
>>
>> Er, then what's a mantissa if it's not what people call a float's mantissa?
>>
>> What makes you say it is "more properly" known as the significand?
>>
>> I'm not necessarily disputing what you say, I'm wondering what is your
>> justification for it.
>
> http://mathworld.wolfram.com/Significand.html
> http://mathworld.wolfram.com/Mantissa.html
>
> The significand of -3.14159 is the sequence of digits 314159. The
> mantissa of -3.14159 is the number 0.85841.
>
> I don't have a copy of the IEEE-754 standard, but I believe that it
> also uses the term "significand" and specifically avoids the term
> "mantissa".

Confirmed.

-- 
Robert Kern

"I have come to believe that the whole world is an enigma, a harmless enigma
  that is made terrible by our own mad attempt to interpret it as though it had
  an underlying truth."
   -- Umberto Eco

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

Thread

Curious Omission In New-Style Formats Lawrence D’Oliveiro <lawrencedo99@gmail.com> - 2016-07-09 22:54 -0700
  Re: Curious Omission In New-Style Formats Ian Kelly <ian.g.kelly@gmail.com> - 2016-07-10 01:21 -0600
    Re: Curious Omission In New-Style Formats Lawrence D’Oliveiro <lawrencedo99@gmail.com> - 2016-07-10 17:34 -0700
      Re: Curious Omission In New-Style Formats Ian Kelly <ian.g.kelly@gmail.com> - 2016-07-11 09:04 -0600
        Re: Curious Omission In New-Style Formats Steven D'Aprano <steve@pearwood.info> - 2016-07-12 02:28 +1000
          Re: Curious Omission In New-Style Formats Ethan Furman <ethan@stoneleaf.us> - 2016-07-11 10:24 -0700
            Re: Curious Omission In New-Style Formats Gregory Ewing <greg.ewing@canterbury.ac.nz> - 2016-07-12 11:47 +1200
              Re: Curious Omission In New-Style Formats Ethan Furman <ethan@stoneleaf.us> - 2016-07-11 17:24 -0700
              Re: Curious Omission In New-Style Formats Ian Kelly <ian.g.kelly@gmail.com> - 2016-07-11 19:16 -0600
          Re: Curious Omission In New-Style Formats Ian Kelly <ian.g.kelly@gmail.com> - 2016-07-11 12:38 -0600
            Re: Curious Omission In New-Style Formats Steven D'Aprano <steve@pearwood.info> - 2016-07-12 13:38 +1000
              Re: Curious Omission In New-Style Formats Ian Kelly <ian.g.kelly@gmail.com> - 2016-07-13 00:21 -0600
                Re: Curious Omission In New-Style Formats Marko Rauhamaa <marko@pacujo.net> - 2016-07-13 09:57 +0300
                Re: Curious Omission In New-Style Formats Lawrence D’Oliveiro <lawrencedo99@gmail.com> - 2016-07-13 00:05 -0700
                Re: Curious Omission In New-Style Formats Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2016-07-13 18:49 +1000
                Re: Curious Omission In New-Style Formats Antoon Pardon <antoon.pardon@rece.vub.ac.be> - 2016-07-13 16:01 +0200
                Re: Curious Omission In New-Style Formats Dennis Lee Bieber <wlfraed@ix.netcom.com> - 2016-07-13 20:04 -0400
                Re: Curious Omission In New-Style Formats Lawrence D’Oliveiro <lawrencedo99@gmail.com> - 2016-07-13 15:24 -0700
                Re: Curious Omission In New-Style Formats Ian Kelly <ian.g.kelly@gmail.com> - 2016-07-13 18:45 -0600
                Re: Curious Omission In New-Style Formats Lawrence D’Oliveiro <lawrencedo99@gmail.com> - 2016-07-13 20:39 -0700
                Re: Curious Omission In New-Style Formats Ian Kelly <ian.g.kelly@gmail.com> - 2016-07-13 23:18 -0600
                Re: Curious Omission In New-Style Formats Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2016-07-14 17:47 +1000
                Re: Curious Omission In New-Style Formats Dennis Lee Bieber <wlfraed@ix.netcom.com> - 2016-07-14 07:34 -0400
                Re: Curious Omission In New-Style Formats Ian Kelly <ian.g.kelly@gmail.com> - 2016-07-14 08:30 -0600
                Re: Curious Omission In New-Style Formats Marko Rauhamaa <marko@pacujo.net> - 2016-07-14 19:02 +0300
                Re: Curious Omission In New-Style Formats Ian Kelly <ian.g.kelly@gmail.com> - 2016-07-14 11:10 -0600
                Re: Curious Omission In New-Style Formats Marko Rauhamaa <marko@pacujo.net> - 2016-07-14 20:30 +0300
                Re: Curious Omission In New-Style Formats Ian Kelly <ian.g.kelly@gmail.com> - 2016-07-14 18:17 -0600
                Re: Curious Omission In New-Style Formats Lawrence D’Oliveiro <lawrencedo99@gmail.com> - 2016-07-14 18:08 -0700
                Re: Curious Omission In New-Style Formats Marko Rauhamaa <marko@pacujo.net> - 2016-07-15 09:06 +0300
                Re: Curious Omission In New-Style Formats Antoon Pardon <antoon.pardon@rece.vub.ac.be> - 2016-07-15 09:54 +0200
                Re: Curious Omission In New-Style Formats Jussi Piitulainen <jussi.piitulainen@helsinki.fi> - 2016-07-15 11:40 +0300
                Re: Curious Omission In New-Style Formats Steven D'Aprano <steve@pearwood.info> - 2016-07-15 20:56 +1000
                Re: Curious Omission In New-Style Formats Antoon Pardon <antoon.pardon@rece.vub.ac.be> - 2016-07-15 13:44 +0200
                Re: Curious Omission In New-Style Formats Jussi Piitulainen <jussi.piitulainen@helsinki.fi> - 2016-07-15 16:38 +0300
                Re: Curious Omission In New-Style Formats Antoon Pardon <antoon.pardon@rece.vub.ac.be> - 2016-07-15 16:47 +0200
                Re: Curious Omission In New-Style Formats Jussi Piitulainen <jussi.piitulainen@helsinki.fi> - 2016-07-15 16:13 +0300
                Re: Curious Omission In New-Style Formats Steven D'Aprano <steve@pearwood.info> - 2016-07-16 01:12 +1000
                Re: Curious Omission In New-Style Formats Random832 <random832@fastmail.com> - 2016-07-15 09:39 -0400
                Re: Curious Omission In New-Style Formats Antoon Pardon <antoon.pardon@rece.vub.ac.be> - 2016-07-15 16:32 +0200
                Re: Curious Omission In New-Style Formats Antoon Pardon <antoon.pardon@rece.vub.ac.be> - 2016-07-15 13:05 +0200
                Re: Curious Omission In New-Style Formats Jussi Piitulainen <jussi.piitulainen@helsinki.fi> - 2016-07-15 16:28 +0300
                Re: Curious Omission In New-Style Formats Steven D'Aprano <steve@pearwood.info> - 2016-07-16 01:13 +1000
                Re: Curious Omission In New-Style Formats Jussi Piitulainen <jussi.piitulainen@helsinki.fi> - 2016-07-15 18:27 +0300
                Re: Curious Omission In New-Style Formats Marko Rauhamaa <marko@pacujo.net> - 2016-07-15 12:20 +0300
                Re: Curious Omission In New-Style Formats Antoon Pardon <antoon.pardon@rece.vub.ac.be> - 2016-07-15 12:44 +0200
                Re: Curious Omission In New-Style Formats Lawrence D’Oliveiro <lawrencedo99@gmail.com> - 2016-07-14 16:26 -0700
                Re: Curious Omission In New-Style Formats Robert Kern <robert.kern@gmail.com> - 2016-07-14 16:17 +0100
                Re: Curious Omission In New-Style Formats Lawrence D’Oliveiro <lawrencedo99@gmail.com> - 2016-07-15 16:35 -0700
                Re: Curious Omission In New-Style Formats Chris Angelico <rosuav@gmail.com> - 2016-07-16 10:57 +1000
                Re: Curious Omission In New-Style Formats MRAB <python@mrabarnett.plus.com> - 2016-07-14 01:59 +0100
              Re: Curious Omission In New-Style Formats Dennis Lee Bieber <wlfraed@ix.netcom.com> - 2016-07-13 07:46 -0400
                Re: Curious Omission In New-Style Formats Jussi Piitulainen <jussi.piitulainen@helsinki.fi> - 2016-07-13 16:04 +0300
              Re: Curious Omission In New-Style Formats Chris Angelico <rosuav@gmail.com> - 2016-07-13 23:00 +1000
                Re: Curious Omission In New-Style Formats Jussi Piitulainen <jussi.piitulainen@helsinki.fi> - 2016-07-13 16:16 +0300
                Re: Curious Omission In New-Style Formats Chris Angelico <rosuav@gmail.com> - 2016-07-13 23:49 +1000
                Re: Curious Omission In New-Style Formats Jussi Piitulainen <jussi.piitulainen@helsinki.fi> - 2016-07-13 17:23 +0300
                Re: Curious Omission In New-Style Formats Chris Angelico <rosuav@gmail.com> - 2016-07-14 00:28 +1000
          Re: Curious Omission In New-Style Formats Terry Reedy <tjreedy@udel.edu> - 2016-07-11 14:54 -0400
          Re: Curious Omission In New-Style Formats Ian Kelly <ian.g.kelly@gmail.com> - 2016-07-11 13:27 -0600
          Re: Curious Omission In New-Style Formats Michael Torrie <torriem@gmail.com> - 2016-07-11 14:06 -0600
          Re: Curious Omission In New-Style Formats Random832 <random832@fastmail.com> - 2016-07-11 16:34 -0400
          Re: Curious Omission In New-Style Formats Terry Reedy <tjreedy@udel.edu> - 2016-07-11 16:52 -0400
          What is precision of a number representation? (was: Curious Omission In New-Style Formats) Ben Finney <ben+python@benfinney.id.au> - 2016-07-12 06:56 +1000
            Re: What is precision of a number representation? Ben Bacarisse <ben.usenet@bsb.me.uk> - 2016-07-11 23:28 +0100
          Re: What is precision of a number representation? Ethan Furman <ethan@stoneleaf.us> - 2016-07-11 14:22 -0700
          Re: What is precision of a number representation? (was: Curious Omission In New-Style Formats) Chris Angelico <rosuav@gmail.com> - 2016-07-12 07:51 +1000
            Re: What is precision of a number representation? (was: Curious Omission In New-Style Formats) Jan Coombs <jenfhaomndgfwutc@murmic.plus.com> - 2016-07-12 00:14 +0100
              Re: What is precision of a number representation? (was: Curious Omission In New-Style Formats) Chris Angelico <rosuav@gmail.com> - 2016-07-12 09:57 +1000
            Re: What is precision of a number representation? (was: Curious Omission In New-Style Formats) Steven D'Aprano <steve@pearwood.info> - 2016-07-12 14:19 +1000
              Re: What is precision of a number representation? (was: Curious Omission In New-Style Formats) Chris Angelico <rosuav@gmail.com> - 2016-07-12 14:36 +1000
              Re: What is precision of a number representation? Antoon Pardon <antoon.pardon@rece.vub.ac.be> - 2016-07-12 11:50 +0200
                Re: What is precision of a number representation? Marko Rauhamaa <marko@pacujo.net> - 2016-07-12 13:27 +0300
                Re: What is precision of a number representation? Antoon Pardon <antoon.pardon@rece.vub.ac.be> - 2016-07-12 13:02 +0200
                Re: What is precision of a number representation? Steven D'Aprano <steve@pearwood.info> - 2016-07-12 23:16 +1000
          Re: What is precision of a number representation? Ethan Furman <ethan@stoneleaf.us> - 2016-07-11 15:17 -0700
            Re: What is precision of a number representation? Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2016-07-12 16:21 +1000
              Re: What is precision of a number representation? Random832 <random832@fastmail.com> - 2016-07-12 09:36 -0400
          Re: What is precision of a number representation? Ethan Furman <ethan@stoneleaf.us> - 2016-07-11 15:29 -0700
          Re: Curious Omission In New-Style Formats Gregory Ewing <greg.ewing@canterbury.ac.nz> - 2016-07-12 11:26 +1200
          Re: What is precision of a number representation? Chris Angelico <rosuav@gmail.com> - 2016-07-12 11:57 +1000
          Re: What is precision of a number representation? Ben Finney <ben+python@benfinney.id.au> - 2016-07-12 13:41 +1000
          Re: What is precision of a number representation? Terry Reedy <tjreedy@udel.edu> - 2016-07-12 00:14 -0400
          Re: What is precision of a number representation? Terry Reedy <tjreedy@udel.edu> - 2016-07-12 00:17 -0400

csiph-web