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Re: return -1 using size_t???

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Am 02/12/2012 06:21 PM, schrieb Devil with the China Blue Dress:
> In article <4F36F7C4.5060103@loria.fr>, Jens Gustedt <jens.gustedt@loria.fr> 
> wrote:
> 
>> Am 02/11/2012 11:31 PM, schrieb Devil with the China Blue Dress:
>>> No, the question was about casting an signed number (-1) to an unsigned 
>>> type. 
>>> That this can be done and is closed under addition is a property of twos 
>>> complement integers.
>>
>> No, the representation of the -1 has nothing do with the result of
>> converting it into any unsigned integer type. As has been already been
>> repeated several times upthread, C strictly defines what has to be done
>> when converting a negative *value* to an unsigned integer type. And in
>> particular it uses the value and not the representation.
>>
>> For all conforming C implementations the result of converting -1 to
>> size_t is SIZE_MAX.
> 
> In 4-bit ones complement, -1 is 1110, but the maximum natural number is 1111; 
> signed magnitude are 1001 and 1111; twos complement are 1111 and 1111.

Frankly, I don't see the relation between your sentence and the one from
me that that you are citing above. As I said conversion from signed to
unsigned has by definition of the standard nothing to do with the
representation of the number but just by the value of it.

Jens

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return -1 using size_t??? Robert Hayes <rhyes80@gmail.com> - 2012-02-11 11:21 -0800
  Re: return -1 using size_t??? Shao Miller <sha0.miller@gmail.com> - 2012-02-11 15:00 -0500
    Re: return -1 using size_t??? Ben Bacarisse <ben.usenet@bsb.me.uk> - 2012-02-11 23:24 +0000
  Re: return -1 using size_t??? Jeffrey R <joeff@nospam.com> - 2012-02-11 19:58 +0000
    Re: return -1 using size_t??? Eric Sosman <esosman@ieee-dot-org.invalid> - 2012-02-11 15:11 -0500
  Re: return -1 using size_t??? Eric Sosman <esosman@ieee-dot-org.invalid> - 2012-02-11 15:07 -0500
    Re: return -1 using size_t??? Robert Hayes <rhyes80@gmail.com> - 2012-02-11 12:42 -0800
      Re: return -1 using size_t??? Malcolm McLean <malcolm.mclean5@btinternet.com> - 2012-02-11 13:19 -0800
        Re: return -1 using size_t??? Keith Thompson <kst-u@mib.org> - 2012-02-11 17:10 -0800
          Re: return -1 using size_t??? Malcolm McLean <malcolm.mclean5@btinternet.com> - 2012-02-12 03:48 -0800
            Re: return -1 using size_t??? Keith Thompson <kst-u@mib.org> - 2012-02-12 04:04 -0800
      Re: return -1 using size_t??? Jeffrey R <joeff@nospam.com> - 2012-02-11 22:25 +0000
        Re: return -1 using size_t??? Devil with the China Blue Dress <chine.bleu@yahoo.com> - 2012-02-11 14:36 -0800
          Re: return -1 using size_t??? Ben Bacarisse <ben.usenet@bsb.me.uk> - 2012-02-11 23:17 +0000
        Re: return -1 using size_t??? Jeroen Mostert <jmostert@xs4all.nl> - 2012-02-11 23:46 +0100
          Re: return -1 using size_t??? pete <pfiland@mindspring.com> - 2012-02-11 19:18 -0500
        Re: return -1 using size_t??? Eric Sosman <esosman@ieee-dot-org.invalid> - 2012-02-12 08:38 -0500
      Re: return -1 using size_t??? Ben Bacarisse <ben.usenet@bsb.me.uk> - 2012-02-11 23:32 +0000
      Re: return -1 using size_t??? pete <pfiland@mindspring.com> - 2012-02-11 19:15 -0500
    Re: return -1 using size_t??? Ralph Spitzner <rasp@spitzner.org> - 2012-02-13 13:51 +0100
  Re: return -1 using size_t??? Devil with the China Blue Dress <chine.bleu@yahoo.com> - 2012-02-11 12:40 -0800
    Re: return -1 using size_t??? Eric Sosman <esosman@ieee-dot-org.invalid> - 2012-02-11 17:02 -0500
      Re: return -1 using size_t??? Devil with the China Blue Dress <chine.bleu@yahoo.com> - 2012-02-11 14:11 -0800
        Re: return -1 using size_t??? Eric Sosman <esosman@ieee-dot-org.invalid> - 2012-02-11 17:21 -0500
          Re: return -1 using size_t??? Devil with the China Blue Dress <chine.bleu@yahoo.com> - 2012-02-11 14:31 -0800
            Re: return -1 using size_t??? Willem <willem@toad.stack.nl> - 2012-02-11 22:52 +0000
            Re: return -1 using size_t??? Jens Gustedt <jens.gustedt@loria.fr> - 2012-02-12 00:20 +0100
              Re: return -1 using size_t??? Devil with the China Blue Dress <chine.bleu@yahoo.com> - 2012-02-12 09:21 -0800
                Re: return -1 using size_t??? Keith Thompson <kst-u@mib.org> - 2012-02-12 12:27 -0800
                Re: return -1 using size_t??? Jeroen Mostert <jmostert@xs4all.nl> - 2012-02-12 22:17 +0100
                Re: return -1 using size_t??? Devil with the China Blue Dress <chine.bleu@yahoo.com> - 2012-02-12 15:10 -0800
                Re: return -1 using size_t??? Nick Keighley <nick_keighley_nospam@hotmail.com> - 2012-02-13 03:11 -0800
                Re: return -1 using size_t??? Ben Bacarisse <ben.usenet@bsb.me.uk> - 2012-02-12 23:25 +0000
                Re: return -1 using size_t??? Jeroen Mostert <jmostert@xs4all.nl> - 2012-02-13 07:46 +0100
                Re: return -1 using size_t??? Ike Naar <ike@sverige.freeshell.org> - 2012-02-13 10:27 +0000
                Re: return -1 using size_t??? Ben Bacarisse <ben.usenet@bsb.me.uk> - 2012-02-13 12:36 +0000
                Re: return -1 using size_t??? Joe Pfeiffer <pfeiffer@cs.nmsu.edu> - 2012-02-13 10:26 -0700
                Re: return -1 using size_t??? Ike Naar <ike@iceland.freeshell.org> - 2012-02-14 00:18 +0000
                Re: return -1 using size_t??? Ben Bacarisse <ben.usenet@bsb.me.uk> - 2012-02-14 00:29 +0000
                Re: return -1 using size_t??? Devil with the China Blue Dress <chine.bleu@yahoo.com> - 2012-02-13 16:37 -0800
                Re: return -1 using size_t??? Angel <angel+news@spamcop.net> - 2012-02-13 11:47 +0000
                Re: return -1 using size_t??? Ben Bacarisse <ben.usenet@bsb.me.uk> - 2012-02-13 12:54 +0000
                Re: return -1 using size_t??? Angel <angel+news@spamcop.net> - 2012-02-13 14:30 +0000
                Re: return -1 using size_t??? Phil Carmody <thefatphil_demunged@yahoo.co.uk> - 2012-02-22 01:53 +0200
                Re: return -1 using size_t??? James Kuyper <jameskuyper@verizon.net> - 2012-02-13 12:11 -0500
                Re: return -1 using size_t??? Ben Bacarisse <ben.usenet@bsb.me.uk> - 2012-02-13 17:28 +0000
                Re: return -1 using size_t??? James Kuyper <jameskuyper@verizon.net> - 2012-02-13 13:08 -0500
                Re: return -1 using size_t??? Ben Bacarisse <ben.usenet@bsb.me.uk> - 2012-02-13 23:06 +0000
                Re: return -1 using size_t??? William Ahern <william@wilbur.25thandClement.com> - 2012-02-13 14:39 -0800
                Re: return -1 using size_t??? Keith Thompson <kst-u@mib.org> - 2012-02-13 14:59 -0800
                Re: return -1 using size_t??? Jens Gustedt <jens.gustedt@loria.fr> - 2012-02-12 22:17 +0100
                Re: return -1 using size_t??? Devil with the China Blue Dress <chine.bleu@yahoo.com> - 2012-02-12 15:06 -0800
                Re: return -1 using size_t??? Eric Sosman <esosman@ieee-dot-org.invalid> - 2012-02-12 18:12 -0500
                Re: return -1 using size_t??? Phil Carmody <thefatphil_demunged@yahoo.co.uk> - 2012-02-22 02:15 +0200
  Re: return -1 using size_t??? Barry Schwarz <schwarzb@dqel.com> - 2012-02-11 14:27 -0800
    Re: return -1 using size_t??? Keith Thompson <kst-u@mib.org> - 2012-02-11 17:34 -0800

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