[lkml]   [2007]   [May]   [25]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
SubjectRe: double exclamation (!!) suckage in the kernel
On Sat, May 26, 2007 at 01:53:59AM +0530, Satyam Sharma wrote:
> Are all these occurrences merely the debris of
> s/something/!notsomething/g kind of patches or is there some
> dark, unknown C / gcc wizardry I have absolutely no clue of?

Try building and running this:

#include <stdio.h>
int main()
int i;
for (i = 0; i < 10; i++)
printf("%d: %d\n", i, !!i);
return 0;
and you should see it's effect.

Russell King
Linux kernel 2.6 ARM Linux -
maintainer of:
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to
More majordomo info at
Please read the FAQ at

 \ /
  Last update: 2007-05-25 22:31    [from the cache]
©2003-2014 Jasper Spaans. hosted at Digital Ocean