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

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Seebs wrote:
> 
> On 2011-05-12, pete <pfiland@mindspring.com> wrote:
> >> unsigned sz;
> >> (int) sz < 0
> 
> >> Does this just check the high bit (assuming 2's complement)?
> 
> > I don't know,
> > but I don't see the relevance of ((int) sz < 0).
> 
> The relevance was in that question there.
> 
> On a typical 2s complement system,
> it is quite likely that if you convert
> a value greater than INT_MAX but no larger than UINT_MAX
> to a signed integer type,
> you will end up with a negative value.  Thus,
>         sz > INT_MAX
> and
>         (int) sz < 0
> are both fancy ways of saying something much like:
> 
>         (sz & ((UNIT_MAX) & ~(UINT_MAX >> 1))) != 0
> 
> (unless my lack of morning coffee made me get that wrong...)

But 
why would you care about
whether or not an unsigned object
held a value which was greater than INT_MAX?

-- 
pete

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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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