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Groups > comp.lang.c > #64523

Re: "core C"

From jt@toerring.de (Jens Thoms Toerring)
Newsgroups comp.lang.c
Subject Re: "core C"
Date 2015-06-30 07:54 +0000
Organization Freie Universitaet Berlin
Message-ID <cvf093FpgfdU1@mid.uni-berlin.de> (permalink)
References <ind4patt3nos39qrqj92b5dlp014o68g3v@4ax.com>

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Rosario19 <Ros@invalid.invalid> wrote:
> "core C" already exist

Yes?

> it is the use of
> "intxx_t" type that would make all operation +-/* all the same for
> differents machine/compiler

There's one drawback with the intN_t types: they're optional.
Thus this only will work on systems were these typedefs
actually exist. Systems with CHAR_BIT larger than 8 will
have real problems supporting all or at least some of them.
And the behaviour on overflow is still not defined for
the intN_t types, so the result of a simple addition that
overflows can be different on different systems.

> it is one float of fixed size

And which is that? There's, as far as I am aware, float,
double and long double. But none of them have a fixed size.

> it is some macro value for aligned 

> it is a pointer linear of 32 bit
> and a pointer   linear of 64 bit

No idea what you're talking about.

> end

> endianes of cpu for me has no rilevance
> the only place that it count something is when integers are sent
> code-decode

Endianess is very relevant whenever you exchange data with
a different system, either over the network or when reading
a file thatwas created on a different system. And it not
only concerns integers but also floating point numbers.

> endianes not count for operators
> 0x2 & 0x7  
> would be the same number for all computer whaterver endianess they
> have, or am i wrong?

Yes, but that requires that you have the data already read
in correctly into memory.
                             Regards, Jens
-- 
  \   Jens Thoms Toerring  ___      jt@toerring.de
   \__________________________      http://toerring.de

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"core C" Rosario19 <Ros@invalid.invalid> - 2015-06-30 08:38 +0200
  Re: "core C" jt@toerring.de (Jens Thoms Toerring) - 2015-06-30 07:54 +0000
    Re: "core C" Malcolm McLean <malcolm.mclean5@btinternet.com> - 2015-06-30 02:55 -0700
    Re: "core C" Rosario19 <Ros@invalid.invalid> - 2015-06-30 17:31 +0200
      Re: "core C" Rosario19 <Ros@invalid.invalid> - 2015-06-30 18:15 +0200
        Re: "core C" "Rick C. Hodgin" <rick.c.hodgin@gmail.com> - 2015-06-30 12:19 -0700
  Re: "core C" "Rick C. Hodgin" <rick.c.hodgin@gmail.com> - 2015-06-30 04:27 -0700
    Re: "core C" "Rick C. Hodgin" <rick.c.hodgin@gmail.com> - 2015-06-30 04:48 -0700
      Re: "core C" Bartc <bc@freeuk.com> - 2015-06-30 13:07 +0100
        Re: "core C" "Rick C. Hodgin" <rick.c.hodgin@gmail.com> - 2015-06-30 05:15 -0700
    Re: "core C" Bartc <bc@freeuk.com> - 2015-06-30 13:02 +0100
      Re: "core C" "Rick C. Hodgin" <rick.c.hodgin@gmail.com> - 2015-06-30 05:13 -0700
        Re: "core C" Bartc <bc@freeuk.com> - 2015-06-30 13:58 +0100
          Re: "core C" "Rick C. Hodgin" <rick.c.hodgin@gmail.com> - 2015-06-30 06:11 -0700
            Re: "core C" Bartc <bc@freeuk.com> - 2015-06-30 15:11 +0100
              Re: "core C" "Rick C. Hodgin" <rick.c.hodgin@gmail.com> - 2015-06-30 07:50 -0700
                Re: "core C" Rosario19 <Ros@invalid.invalid> - 2015-06-30 17:24 +0200
                Re: "core C" Bartc <bc@freeuk.com> - 2015-06-30 17:44 +0100
                Re: "core C" "Rick C. Hodgin" <rick.c.hodgin@gmail.com> - 2015-06-30 10:04 -0700
                Re: "core C" Bartc <bc@freeuk.com> - 2015-07-01 11:46 +0100
                Re: "core C" "Rick C. Hodgin" <rick.c.hodgin@gmail.com> - 2015-07-01 04:40 -0700
                Re: "core C" Keith Thompson <kst-u@mib.org> - 2015-07-01 08:05 -0700
                Re: "core C" Bartc <bc@freeuk.com> - 2015-07-01 17:01 +0100
                Re: "core C" Keith Thompson <kst-u@mib.org> - 2015-07-01 10:56 -0700
                Re: "core C" BGB <cr88192@hotmail.com> - 2015-07-04 12:59 -0500
                Re: "core C" Bartc <bc@freeuk.com> - 2015-07-04 20:25 +0100
                Re: "core C" BGB <cr88192@hotmail.com> - 2015-07-04 20:56 -0500
        Re: "core C" Ben Bacarisse <ben.usenet@bsb.me.uk> - 2015-06-30 14:17 +0100
    Re: "core C" Ben Bacarisse <ben.usenet@bsb.me.uk> - 2015-06-30 14:03 +0100
      Re: "core C" "Rick C. Hodgin" <rick.c.hodgin@gmail.com> - 2015-06-30 06:16 -0700
    Re: "core C" David Brown <david.brown@hesbynett.no> - 2015-06-30 15:46 +0200
      Re: "core C" "Rick C. Hodgin" <rick.c.hodgin@gmail.com> - 2015-06-30 07:54 -0700
      Re: "core C" Steve Thompson <stevet810@gmail.com> - 2015-07-03 12:25 +0000
    Re: "core C" jt@toerring.de (Jens Thoms Toerring) - 2015-07-01 15:04 +0000
      Re: "core C" "Rick C. Hodgin" <rick.c.hodgin@gmail.com> - 2015-07-01 08:12 -0700
    Re: "core C" BGB <cr88192@hotmail.com> - 2015-07-04 10:36 -0500
  Re: "core C" "Rick C. Hodgin" <rick.c.hodgin@gmail.com> - 2015-06-30 04:41 -0700
    Re: "core C" Ben Bacarisse <ben.usenet@bsb.me.uk> - 2015-06-30 14:19 +0100
      Re: "core C" "Rick C. Hodgin" <rick.c.hodgin@gmail.com> - 2015-06-30 06:25 -0700
        Re: "core C" Ben Bacarisse <ben.usenet@bsb.me.uk> - 2015-06-30 15:48 +0100
          Re: "core C" "Rick C. Hodgin" <rick.c.hodgin@gmail.com> - 2015-06-30 07:52 -0700
  Re: "core C" "Rick C. Hodgin" <rick.c.hodgin@gmail.com> - 2015-06-30 04:42 -0700
  Re: "core C" "Rick C. Hodgin" <rick.c.hodgin@gmail.com> - 2015-06-30 08:28 -0700
    Re: "core C" David Brown <david.brown@hesbynett.no> - 2015-06-30 22:28 +0200
      Re: "core C" Ian Collins <ian-news@hotmail.com> - 2015-07-01 08:45 +1200
        Re: "core C" "Rick C. Hodgin" <rick.c.hodgin@gmail.com> - 2015-06-30 13:56 -0700
          Re: "core C" David Brown <david.brown@hesbynett.no> - 2015-07-01 10:27 +0200
        Re: "core C" Malcolm McLean <malcolm.mclean5@btinternet.com> - 2015-06-30 14:56 -0700
          Re: "core C" Ian Collins <ian-news@hotmail.com> - 2015-07-01 10:03 +1200
            Re: "core C" Malcolm McLean <malcolm.mclean5@btinternet.com> - 2015-06-30 15:31 -0700
              Re: "core C" Ian Collins <ian-news@hotmail.com> - 2015-07-01 10:52 +1200
                Re: "core C" Malcolm McLean <malcolm.mclean5@btinternet.com> - 2015-06-30 16:58 -0700
                Re: "core C" Keith Thompson <kst-u@mib.org> - 2015-06-30 17:30 -0700
                Re: "core C" David Brown <david.brown@hesbynett.no> - 2015-07-01 08:54 +0200
                Re: "core C" Keith Thompson <kst-u@mib.org> - 2015-07-01 07:54 -0700
                Re: "core C" Malcolm McLean <malcolm.mclean5@btinternet.com> - 2015-07-01 09:42 -0700

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