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From: Willem <willem@toad.stack.nl>
Newsgroups: comp.lang.c
Subject: Re: C programming in 2011
Date: Thu, 26 May 2011 17:29:38 +0000 (UTC)
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Xref: x330-a1.tempe.blueboxinc.net comp.lang.c:4808

Branimir Maksimovic wrote:
) On Thu, 26 May 2011 17:23:01 +0200
) Francois Grieu <fgrieu@gmail.com> wrote:
)
)> On 26/05/2011 16:21, Branimir Maksimovic wrote:
)> > On 05/26/2011 04:04 PM, Francois Grieu wrote:
)> >> [3] some compilers know that, when j is an int,
)> >> if (j<1 || j>8)
)> >>     foo();
)> >> can be rewritten as
)> >>     if ((unsigned)j-1u>7u)
)> >>         foo();
)> >
)> > No, it can't.
)> 
)> Would you please illustrate by an example when that does not stand?
)
) When j is in range [-8 , 0]
)
) Actually: if(j < -8 || j > 8)
) can be rewritten as: if((unsigned)j>8)

Is this meant to be some kind of joke ?


SaSW, Willem
-- 
Disclaimer: I am in no way responsible for any of the statements
            made in the above text. For all I know I might be
            drugged or something..
            No I'm not paranoid. You all think I'm paranoid, don't you !
#EOT