Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]
| From | Keith Thompson <kst-u@mib.org> |
|---|---|
| Newsgroups | comp.lang.c |
| Subject | Re: Updating C default type |
| Date | 2014-04-23 10:55 -0700 |
| Organization | None to speak of |
| Message-ID | <ln1twovskc.fsf@nuthaus.mib.org> (permalink) |
| References | <lj66ho$8fg$1@speranza.aioe.org> <20140422120151.80@kylheku.com> <8e15a84d-76d2-4f8f-ba1e-804998a7bd5e@googlegroups.com> <lj8rak$nov$2@dont-email.me> |
Stephen Sprunk <stephen@sprunk.org> writes:
> On 22-Apr-14 16:13, Malcolm McLean wrote:
>> On Tuesday, April 22, 2014 8:08:49 PM UTC+1, Kaz Kylheku wrote:
>>> A double does not have greater precision than int; an integer
>>> *precisely* represents integers. A double *imprecisely*
>>> approximates real numbers using rational numbers.
>>
>> On a 32 bit system, double is the best integer type.
>
> double is not an integer type at all, so "best" is moot.
>
>> It can represent more integers than any 32 bit integer type,
>
> Well, you'd expect that since double is a 64-bit type. OTOH, double
> can't represent all the integers that a 64-bit integer type can, so that
> makes it rather poorly suited as a replacement. Likewise, float can't
> represent all the integers that a 32-bit integer type can.
float and double are very commonly 32-bit and 64-bit types, respectively,
and systems with other sizes are probably becoming rarer as IEEE continues to
catch on. But the language doesn't actually guarantee those particular sizes.
(Though I think the minimal requirements for double are such that it can't
be implemented in 32 bits.)
--
Keith Thompson (The_Other_Keith) kst-u@mib.org <http://www.ghoti.net/~kst>
Working, but not speaking, for JetHead Development, Inc.
"We must do something. This is something. Therefore, we must do this."
-- Antony Jay and Jonathan Lynn, "Yes Minister"
Back to comp.lang.c | Previous | Next — Previous in thread | Next in thread | Find similar | Unroll thread
Updating C default type Raj Pashwar <raj121190@hotmail.NOSPAM.com> - 2014-04-22 16:48 +0000
Re: Updating C default type jacob navia <jacob@spamsink.net> - 2014-04-22 18:59 +0200
Re: Updating C default type Raj Pashwar <raj121190@hotmail.NOSPAM.com> - 2014-04-22 17:13 +0000
Re: Updating C default type Keith Thompson <kst-u@mib.org> - 2014-04-22 11:59 -0700
Re: Updating C default type Kaz Kylheku <kaz@kylheku.com> - 2014-04-22 19:12 +0000
Re: Updating C default type jacob navia <jacob@spamsink.net> - 2014-04-25 19:31 +0200
Re: Updating C default type Stephen Sprunk <stephen@sprunk.org> - 2014-04-22 15:41 -0500
Re: Updating C default type "BartC" <bc@freeuk.com> - 2014-04-22 21:47 +0100
Re: Updating C default type Ken Brody <kenbrody@spamcop.net> - 2014-04-24 12:25 -0400
Re: Updating C default type Malcolm McLean <malcolm.mclean5@btinternet.com> - 2014-04-24 10:32 -0700
Re: Updating C default type glen herrmannsfeldt <gah@ugcs.caltech.edu> - 2014-04-24 20:17 +0000
Re: Updating C default type glen herrmannsfeldt <gah@ugcs.caltech.edu> - 2014-04-24 21:03 +0000
Re: Updating C default type Gareth Owen <gwowen@gmail.com> - 2014-04-22 19:12 +0100
Re: Updating C default type Keith Thompson <kst-u@mib.org> - 2014-04-22 10:26 -0700
Re: Updating C default type Malcolm McLean <malcolm.mclean5@btinternet.com> - 2014-04-22 10:28 -0700
Re: Updating C default type glen herrmannsfeldt <gah@ugcs.caltech.edu> - 2014-04-22 18:20 +0000
Re: Updating C default type glen herrmannsfeldt <gah@ugcs.caltech.edu> - 2014-04-22 19:09 +0000
Re: Updating C default type James Kuyper <jameskuyper@verizon.net> - 2014-04-22 15:35 -0400
Re: Updating C default type James Kuyper <jameskuyper@verizon.net> - 2014-04-22 15:38 -0400
Re: Updating C default type Kaz Kylheku <kaz@kylheku.com> - 2014-04-22 19:54 +0000
Re: Updating C default type glen herrmannsfeldt <gah@ugcs.caltech.edu> - 2014-04-22 21:27 +0000
Re: Updating C default type "BartC" <bc@freeuk.com> - 2014-04-22 23:08 +0100
Re: Updating C default type Ben Bacarisse <ben.usenet@bsb.me.uk> - 2014-04-22 22:03 +0100
Re: Updating C default type Thomas Jahns <jahns@idontlikespam.dkrz.de> - 2014-04-23 09:59 +0200
Re: Updating C default type David Thompson <dave.thompson2@verizon.net> - 2014-05-25 16:44 -0400
Re: Updating C default type glen herrmannsfeldt <gah@ugcs.caltech.edu> - 2014-05-26 05:48 +0000
Re: Updating C default type "Osmium" <r124c4u102@comcast.net> - 2014-04-22 14:01 -0500
Re: Updating C default type Quentin Pope <qp19433@hotmail.NOSPAM.com> - 2014-04-23 16:57 +0000
Re: Updating C default type James Kuyper <jameskuyper@verizon.net> - 2014-04-23 13:13 -0400
Re: Updating C default type Kaz Kylheku <kaz@kylheku.com> - 2014-04-23 18:02 +0000
Re: Updating C default type Keith Thompson <kst-u@mib.org> - 2014-04-23 11:33 -0700
Re: Updating C default type Kaz Kylheku <kaz@kylheku.com> - 2014-04-22 19:08 +0000
Re: Updating C default type Ben Bacarisse <ben.usenet@bsb.me.uk> - 2014-04-22 22:08 +0100
Re: Updating C default type "BartC" <bc@freeuk.com> - 2014-04-22 22:19 +0100
Re: Updating C default type Malcolm McLean <malcolm.mclean5@btinternet.com> - 2014-04-22 14:13 -0700
Re: Updating C default type Stephen Sprunk <stephen@sprunk.org> - 2014-04-23 11:55 -0500
Re: Updating C default type Keith Thompson <kst-u@mib.org> - 2014-04-23 10:55 -0700
Re: Updating C default type Robert Wessel <robertwessel2@yahoo.com> - 2014-04-24 00:03 -0500
Re: Updating C default type Malcolm McLean <malcolm.mclean5@btinternet.com> - 2014-04-23 22:37 -0700
Re: Updating C default type glen herrmannsfeldt <gah@ugcs.caltech.edu> - 2014-04-24 12:05 +0000
Re: Updating C default type gordonb.ez7sl@burditt.org (Gordon Burditt) - 2014-04-25 06:11 -0500
Re: Updating C default type James Kuyper <jameskuyper@verizon.net> - 2014-04-25 08:48 -0400
Re: Updating C default type Stephen Sprunk <stephen@sprunk.org> - 2014-04-22 15:30 -0500
Re: Updating C default type ralph <nt_consulting@yahoo.com> - 2014-04-22 23:18 -0500
Re: Updating C default type Ken Brody <kenbrody@spamcop.net> - 2014-04-24 12:28 -0400
Re: Updating C default type gordonb.oztxz@burditt.org (Gordon Burditt) - 2014-04-24 23:50 -0500
Re: Updating C default type James Kuyper <jameskuyper@verizon.net> - 2014-04-25 08:41 -0400
Re: Updating C default type Hans Vlems <hvlems@freenet.de> - 2014-05-25 23:57 -0700
Re: Updating C default type Malcolm McLean <malcolm.mclean5@btinternet.com> - 2014-05-26 01:55 -0700
Re: Updating C default type Ben Bacarisse <ben.usenet@bsb.me.uk> - 2014-05-26 13:01 +0100
Re: Updating C default type Malcolm McLean <malcolm.mclean5@btinternet.com> - 2014-05-26 13:12 -0700
Re: Updating C default type Ben Bacarisse <ben.usenet@bsb.me.uk> - 2014-05-26 22:31 +0100
Re: Updating C default type Ben Bacarisse <ben.usenet@bsb.me.uk> - 2014-05-26 23:55 +0100
Re: Updating C default type Keith Thompson <kst-u@mib.org> - 2014-05-26 17:11 -0700
Re: Updating C default type James Kuyper <jameskuyper@verizon.net> - 2014-05-27 07:54 -0400
csiph-web