Messages in this thread | | | From | Nick Warne <> | 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..." - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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