From: Nick Warne <nick@linicks.net>
To: linux-kernel@vger.kernel.org
Subject: Re: A pettiness question.
Date: Wed, 21 Sep 2005 20:46:15 +0100
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>> This give a enum of {0,1}. If test is not 0, !!test will give 1,
>> otherwise 0.
>>
>> Am I right?
> 
> Yes.  I think of it as a "truth value" predicate (or operator).

Interesting.  I thought maybe this way was trick, until later I experimented.

My post here (as Bill Stokes):

http://www.quakesrc.org/forums/viewtopic.php?t=5626

So what is the reason to doing !!num as opposed to num ? 1:0 (which is more 
readable I think, especially to a lesser experienced C coder).  Quicker to 
type?

My quick test shows compiler renders both the same?

Nick
-- 
"When you're chewing on life's gristle,
Don't grumble, Give a whistle..."
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