Re: formats and endians

From	Lowell Gilbert <lgusenet@be-well.ilk.org>
Newsgroups	comp.lang.c
Subject	Re: formats and endians
Date	2014-12-16 11:34 -0500
Organization	A noiseless patient Spider
Message-ID	<448ui7h7um.fsf@be-well.ilk.org> (permalink)
References	<f80336ac-84d2-43dd-bdd3-cb9f8ca95c60@googlegroups.com> <m6pfea$5on$1@dont-email.me> <e86ce2b2-32e4-4aad-97d8-4410bb59fae6@googlegroups.com>

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fir <profesor.fir@gmail.com> writes:

> for internal representation in ram natural one is quite probably better,

If I understand correctly, I agree. There's no reason not to use the
native representation for data that is entirely internal to your program.

> but what if you have a document format
> used on both architectures - do use both formats with BOM is better, or do use
> the one that has more popular machine base is better, or the BE ir the LE one?

For document formats, try to avoid binary entirely. Stick with something
that someone can easily read in the future without having documentation
on the format. Endian-ness is only one of several reasons for this.

> i tend to opt for big endian mostly
> this choice could reduce the mess..
> bom-wersion itself is portable but you couldhave two mirrored versions of the
> same document, well maybe it is not to much harm in this too... it would be simpler when using majority of big-endian machines only

Again, there's no problem at all if you use a text-based
representation. Well, aside from character representations,
but at least every machine sees the contents exactly the same. 

> do now most machines little-endian here?
> mac linux and windows are probably all little endian, little devices like iphones, phones are little or big endian
> now? some other importand devices?

In hardware, both little-endian and big-endian have advantages to the
designer, so they will co-exist for the foreseeable future. A number of
CPUs can run in either mode.

-- 
Lowell Gilbert, embedded/networking software engineer
	 http://be-well.ilk.org/~lowell/

Thread

formats and endians fir <profesor.fir@gmail.com> - 2014-12-16 04:49 -0800
  formats and endians John Bode <jfbode1029@gmail.com> - 2014-12-16 05:24 -0800
    Re: formats and endians fir <profesor.fir@gmail.com> - 2014-12-16 05:38 -0800
      Re: formats and endians Kleuske <kleuske@nowhere.net> - 2014-12-16 13:55 +0000
        Re: formats and endians Stephen Sprunk <stephen@sprunk.org> - 2014-12-16 11:49 -0600
          Re: formats and endians BGB <cr88192@hotmail.com> - 2014-12-16 21:37 -0600
            Re: formats and endians fir <profesor.fir@gmail.com> - 2014-12-17 01:08 -0800
              Re: formats and endians fir <profesor.fir@gmail.com> - 2014-12-17 02:42 -0800
            Re: formats and endians Stephen Sprunk <stephen@sprunk.org> - 2014-12-18 14:38 -0600
              Re: formats and endians Rosario193 <Rosario@invalid.invalid> - 2014-12-18 23:09 +0100
              Re: formats and endians BGB <cr88192@hotmail.com> - 2014-12-18 16:52 -0600
          Re: formats and endians Kleuske <kleuske@nowhere.net> - 2014-12-17 11:11 +0000
            Re: formats and endians fir <profesor.fir@gmail.com> - 2014-12-17 03:49 -0800
            Re: formats and endians Stephen Sprunk <stephen@sprunk.org> - 2014-12-18 16:28 -0600
              Re: formats and endians BGB <cr88192@hotmail.com> - 2014-12-18 19:38 -0600
              Re: formats and endians Kleuske <kleuske@nowhere.net> - 2014-12-21 14:17 +0000
                Re: formats and endians Malcolm McLean <malcolm.mclean5@btinternet.com> - 2014-12-22 02:19 -0800
                Re: formats and endians Stephen Sprunk <stephen@sprunk.org> - 2015-01-15 12:18 -0600
                Re: formats and endians Jorgen Grahn <grahn+nntp@snipabacken.se> - 2015-01-15 22:35 +0000
                Re: formats and endians raltbos@xs4all.nl (Richard Bos) - 2015-01-20 16:06 +0000
                Re: formats and endians Barry Schwarz <schwarzb@dqel.com> - 2015-01-22 15:41 -0800
                Re: formats and endians Robert Wessel <robertwessel2@yahoo.com> - 2015-01-23 00:45 -0600
                Re: formats and endians Richard Heathfield <invalid@see.sig.invalid> - 2015-01-23 08:52 +0000
                Re: formats and endians Robert Wessel <robertwessel2@yahoo.com> - 2015-01-23 05:47 -0600
                Re: formats and endians Malcolm McLean <malcolm.mclean5@btinternet.com> - 2015-01-23 03:51 -0800
                Re: formats and endians Bartc <bc@freeuk.com> - 2015-01-23 12:18 +0000
                Re: formats and endians raltbos@xs4all.nl (Richard Bos) - 2015-01-23 13:49 +0000
                Re: formats and endians fir <profesor.fir@gmail.com> - 2015-01-23 07:02 -0800
                Re: formats and endians fmassei@gmail.com - 2015-01-23 07:39 -0800
                Re: formats and endians Lowell Gilbert <lgusenet@be-well.ilk.org> - 2015-01-23 10:38 -0500
                Re: formats and endians Greg Martin <greg.at.softsprocket@dot.com> - 2015-01-23 17:45 +0000
                Re: formats and endians James Kuyper <jameskuyper@verizon.net> - 2015-01-23 12:59 -0500
                Re: formats and endians Greg Martin <greg.at.softsprocket@dot.com> - 2015-01-23 18:30 +0000
                Re: formats and endians James Kuyper <jameskuyper@verizon.net> - 2015-01-26 12:35 -0500
                Re: formats and endians Richard Heathfield <invalid@see.sig.invalid> - 2015-01-26 18:15 +0000
                Re: formats and endians Malcolm McLean <malcolm.mclean5@btinternet.com> - 2015-01-26 10:53 -0800
                Re: formats and endians Richard Heathfield <invalid@see.sig.invalid> - 2015-01-26 19:06 +0000
                Re: formats and endians Les Cargill <lcargill99@comcast.com> - 2015-01-26 17:54 -0600
                Re: formats and endians Stephen Sprunk <stephen@sprunk.org> - 2015-01-26 19:09 -0600
                Re: formats and endians Richard Heathfield <invalid@see.sig.invalid> - 2015-01-27 01:49 +0000
                Re: formats and endians James Kuyper <jameskuyper@verizon.net> - 2015-01-26 21:37 -0500
                Re: formats and endians raltbos@xs4all.nl (Richard Bos) - 2015-01-23 22:33 +0000
                Re: formats and endians Richard Heathfield <invalid@see.sig.invalid> - 2015-01-23 18:02 +0000
                Re: formats and endians Greg Martin <greg.at.softsprocket@dot.com> - 2015-01-23 18:50 +0000
                Re: formats and endians glen herrmannsfeldt <gah@ugcs.caltech.edu> - 2015-01-24 00:01 +0000
                Re: formats and endians raltbos@xs4all.nl (Richard Bos) - 2015-01-24 10:05 +0000
                Re: formats and endians glen herrmannsfeldt <gah@ugcs.caltech.edu> - 2015-01-24 11:57 +0000
                Re: formats and endians Geoff <geoff@invalid.invalid> - 2015-01-24 07:48 -0800
                Re: formats and endians Bartc <bc@freeuk.com> - 2015-01-24 10:43 +0000
                Re: formats and endians Geoff <geoff@invalid.invalid> - 2015-01-24 07:52 -0800
                Re: formats and endians raltbos@xs4all.nl (Richard Bos) - 2015-01-23 13:51 +0000
      Re: formats and endians John Bode <jfbode1029@gmail.com> - 2014-12-16 06:56 -0800
    Re: formats and endians Robert Wessel <robertwessel2@yahoo.com> - 2014-12-16 13:20 -0600
      Re: formats and endians Stephen Sprunk <stephen@sprunk.org> - 2014-12-16 18:00 -0600
        Re: formats and endians "Bill Cunningham" <nospam@nspam.invalid> - 2014-12-17 16:32 -0500
  Re: formats and endians David Brown <david.brown@hesbynett.no> - 2014-12-16 15:26 +0100
    Re: formats and endians fir <profesor.fir@gmail.com> - 2014-12-16 06:57 -0800
      Re: formats and endians Lowell Gilbert <lgusenet@be-well.ilk.org> - 2014-12-16 11:34 -0500
        Re: formats and endians fir <profesor.fir@gmail.com> - 2014-12-16 08:47 -0800
          Re: formats and endians BartC <bc@freeuk.com> - 2014-12-16 17:02 +0000
            Re: formats and endians fir <profesor.fir@gmail.com> - 2014-12-16 10:49 -0800
              Re: formats and endians BartC <bc@freeuk.com> - 2014-12-16 19:10 +0000
                Re: formats and endians fir <profesor.fir@gmail.com> - 2014-12-16 11:28 -0800
                Re: formats and endians fir <profesor.fir@gmail.com> - 2014-12-16 11:43 -0800
                Re: formats and endians fir <profesor.fir@gmail.com> - 2014-12-16 11:58 -0800
                Re: formats and endians fir <profesor.fir@gmail.com> - 2014-12-16 12:20 -0800
                Re: formats and endians BartC <bc@freeuk.com> - 2014-12-16 20:21 +0000
                Re: formats and endians Keith Thompson <kst-u@mib.org> - 2014-12-16 13:08 -0800
                Re: formats and endians Richard Heathfield <invalid@see.sig.invalid> - 2014-12-16 21:19 +0000
                Re: formats and endians fir <profesor.fir@gmail.com> - 2014-12-16 13:27 -0800
                Re: formats and endians Tim Rentsch <txr@alumni.caltech.edu> - 2014-12-16 16:41 -0800
                Re: formats and endians fir <profesor.fir@gmail.com> - 2014-12-16 13:22 -0800
                Re: formats and endians fir <profesor.fir@gmail.com> - 2014-12-16 14:00 -0800
                Re: formats and endians BartC <bc@freeuk.com> - 2014-12-16 22:26 +0000
                Re: formats and endians fir <profesor.fir@gmail.com> - 2014-12-16 14:54 -0800
                Re: formats and endians fir <profesor.fir@gmail.com> - 2014-12-16 15:09 -0800
                Re: formats and endians BartC <bc@freeuk.com> - 2014-12-16 20:08 +0000
                Re: formats and endians fir <profesor.fir@gmail.com> - 2014-12-16 12:48 -0800
            Re: formats and endians Kaz Kylheku <kaz@kylheku.com> - 2014-12-16 22:21 +0000
              Re: formats and endians BartC <bc@freeuk.com> - 2014-12-16 22:39 +0000
                Re: formats and endians fir <profesor.fir@gmail.com> - 2014-12-16 15:32 -0800
                Re: formats and endians glen herrmannsfeldt <gah@ugcs.caltech.edu> - 2014-12-17 00:51 +0000
                Re: formats and endians BartC <bc@freeuk.com> - 2014-12-17 11:04 +0000
                Re: formats and endians glen herrmannsfeldt <gah@ugcs.caltech.edu> - 2014-12-17 17:04 +0000
          Re: formats and endians Lowell Gilbert <lgusenet@be-well.ilk.org> - 2014-12-16 12:29 -0500
          Re: formats and endians Ken Brody <kenbrody@spamcop.net> - 2014-12-16 12:40 -0500
            Re: formats and endians Lowell Gilbert <lgusenet@be-well.ilk.org> - 2014-12-16 13:10 -0500
              Re: formats and endians Kaz Kylheku <kaz@kylheku.com> - 2014-12-16 18:35 +0000
                Re: formats and endians Stephen Sprunk <stephen@sprunk.org> - 2014-12-16 12:57 -0600
                Re: formats and endians Lowell Gilbert <lgusenet@be-well.ilk.org> - 2014-12-16 15:11 -0500
                Re: formats and endians Stephen Sprunk <stephen@sprunk.org> - 2014-12-16 18:10 -0600
            Re: formats and endians fir <profesor.fir@gmail.com> - 2014-12-16 10:51 -0800
            Re: formats and endians glen herrmannsfeldt <gah@ugcs.caltech.edu> - 2014-12-16 19:43 +0000
        Re: formats and endians Malcolm McLean <malcolm.mclean5@btinternet.com> - 2014-12-16 10:37 -0800
          Re: formats and endians Stephen Sprunk <stephen@sprunk.org> - 2014-12-16 13:05 -0600
            Re: formats and endians Malcolm McLean <malcolm.mclean5@btinternet.com> - 2014-12-16 11:49 -0800
              Re: formats and endians Stephen Sprunk <stephen@sprunk.org> - 2014-12-16 17:16 -0600
          Re: formats and endians Lowell Gilbert <lgusenet@be-well.ilk.org> - 2014-12-16 14:55 -0500
            Re: formats and endians Stephen Sprunk <stephen@sprunk.org> - 2014-12-16 17:48 -0600
              Re: formats and endians BGB <cr88192@hotmail.com> - 2014-12-17 00:18 -0600
                Re: formats and endians Stephen Sprunk <stephen@sprunk.org> - 2014-12-20 12:21 -0600
                Re: formats and endians BGB <cr88192@hotmail.com> - 2014-12-22 01:38 -0600
      Re: formats and endians Stephen Sprunk <stephen@sprunk.org> - 2014-12-16 11:45 -0600
    Re: formats and endians Michael Angelo Ravera <maravera@prodigy.net> - 2014-12-18 16:50 -0800
  Re: formats and endians Nobody <nobody@nowhere.invalid> - 2014-12-17 04:51 +0000
    Re: formats and endians Malcolm McLean <malcolm.mclean5@btinternet.com> - 2014-12-19 10:16 -0800

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