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Date: Mon, 25 Jul 2005 18:34:13 -0700
From: Andrew Morton <akpm@osdl.org>
To: Miles Bader <miles@gnu.org>
Cc: miles@lsi.nec.co.jp, torvalds@osdl.org, 76306.1226@compuserve.com,
       linux-kernel@vger.kernel.org, vincent.hanquez@cl.cam.ac.uk, ak@suse.de
Subject: Re: [patch 2.6.13-rc3] i386: clean up user_mode macros
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Miles Bader <miles@lsi.nec.co.jp> wrote:
>
> Linus Torvalds <torvalds@osdl.org> writes:
>  > Ask a hundred random C programmers what "!!x" means, versus what "x != 0"
>  > means, and time their replies.
> 
>  I've always thought of "!!" as the "canonicalize boolean" operator...

Me too.  Once you get used to it, it's just the "convert non-zero to 1"
operator.

But whatever.