Re: Would someone tell me if I'm on the wrong track?

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Date	Fri, 13 May 2011 23:19:40 -0400
From	pete <pfiland@mindspring.com>
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Subject	Re: Would someone tell me if I'm on the wrong track?
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Ben Bacarisse wrote:
> 
> Seebs <usenet-nospam@seebs.net> writes:
> 
> > On 2011-05-12, luser- -droog <mijoryx@yahoo.com> wrote:
> >> unsigned sz;
> >> (int) sz < 0
> >>
> >> Does this just check the high bit (assuming 2's complement)?
> >
> > Not necessarily.
> >
> > If you're comfortable assuming 2s complement, I bet you can do better with:
> >       sz > INT_MAX
> 
> The assumption is not 2's complement as far as I can see.  Your test
> works in all of C's three permitted signed integer representations (how
> can it not? -- it does not involve any signed integers).  It fails if
> unsigned int has more then one more value bit that signed int.

Also if
unsigned int has less than one more value bit than signed int.

-- 
pete

Thread

Would someone tell me if I'm on the wrong track? luser- -droog <mijoryx@yahoo.com> - 2011-05-09 23:47 -0700
  Re: Would someone tell me if I'm on the wrong track? luser- -droog <mijoryx@yahoo.com> - 2011-05-10 00:05 -0700
  Re: Would someone tell me if I'm on the wrong track? "io_x" <a@b.c.invalid> - 2011-05-11 08:31 +0200
    Re: Would someone tell me if I'm on the wrong track? luser- -droog <mijoryx@yahoo.com> - 2011-05-10 23:46 -0700
    Re: Would someone tell me if I'm on the wrong track? luser- -droog <mijoryx@yahoo.com> - 2011-05-11 23:05 -0700
      Re: Would someone tell me if I'm on the wrong track? Seebs <usenet-nospam@seebs.net> - 2011-05-12 07:36 +0000
        Re: Would someone tell me if I'm on the wrong track? pete <pfiland@mindspring.com> - 2011-05-12 07:51 -0400
        Re: Would someone tell me if I'm on the wrong track? Ben Bacarisse <ben.usenet@bsb.me.uk> - 2011-05-14 03:34 +0100
          Re: Would someone tell me if I'm on the wrong track? pete <pfiland@mindspring.com> - 2011-05-13 23:19 -0400
            Re: Would someone tell me if I'm on the wrong track? Ben Bacarisse <ben.usenet@bsb.me.uk> - 2011-05-14 12:02 +0100
      Re: Would someone tell me if I'm on the wrong track? pete <pfiland@mindspring.com> - 2011-05-12 08:01 -0400
        Re: Would someone tell me if I'm on the wrong track? Seebs <usenet-nospam@seebs.net> - 2011-05-12 15:57 +0000
          Re: Would someone tell me if I'm on the wrong track? pete <pfiland@mindspring.com> - 2011-05-12 18:04 -0400
            Re: Would someone tell me if I'm on the wrong track? Seebs <usenet-nospam@seebs.net> - 2011-05-12 22:18 +0000
            Re: Would someone tell me if I'm on the wrong track? luser- -droog <mijoryx@yahoo.com> - 2011-05-12 23:05 -0700
              Re: Would someone tell me if I'm on the wrong track? "io_x" <a@b.c.invalid> - 2011-05-13 10:21 +0200
        Re: Would someone tell me if I'm on the wrong track? luser- -droog <mijoryx@yahoo.com> - 2011-05-12 09:33 -0700
      Re: Would someone tell me if I'm on the wrong track? Peter Nilsson <airia@acay.com.au> - 2011-05-12 22:47 -0700
        Re: Would someone tell me if I'm on the wrong track? "io_x" <a@b.c.invalid> - 2011-05-13 10:21 +0200
        Re: Would someone tell me if I'm on the wrong track? Tim Rentsch <txr@alumni.caltech.edu> - 2011-05-18 22:21 -0700
          Re: Would someone tell me if I'm on the wrong track? Peter Nilsson <airia@acay.com.au> - 2011-05-18 23:47 -0700
            Re: Would someone tell me if I'm on the wrong track? Tim Rentsch <txr@alumni.caltech.edu> - 2011-05-19 11:00 -0700

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