Re: A pettiness question.

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



>> 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..."
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [email protected]
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/

[Index of Archives]     [Kernel Newbies]     [Netfilter]     [Bugtraq]     [Photo]     [Gimp]     [Yosemite News]     [MIPS Linux]     [ARM Linux]     [Linux Security]     [Linux RAID]     [Video 4 Linux]     [Linux for the blind]
  Powered by Linux