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Date: Fri, 05 Dec 2008 13:35:31 +0200
From: Andriy Gapon <avg@icyb.net.ua>
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To: Ed Schouten <ed@80386.nl>
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Cc: Garrett Cooper <yanefbsd@gmail.com>,
	"current@freebsd.org" <current@freebsd.org>,
	Maksim Yevmenkin <maksim.yevmenkin@gmail.com>
Subject: Re: RFC: small syscons and kbd patch
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on 05/12/2008 09:22 Ed Schouten said the following:
> * Maksim Yevmenkin <maksim.yevmenkin@gmail.com> wrote:
>> the idea was to ensure that kbd->kb_locked variable only takes values
>> 0 (zero) and 1 (one).
> 
> I often use constructs like these to do that:
> 
> 	foo = bar ? 1 : 0;
> 
> Maybe !!bar is a lot shorter to write, I think the line above is a lot
> easier to read.

Another variation is:
foo = (bar != 0);

I think that this is something in the middle.
BTW, gcc 4.2 produces exactly the same assembly for all 3 forms.

-- 
Andriy Gapon