On 19 Oct 2014, at 13:02, Andriy Gapon <[email protected]> wrote: > I think that on platforms where an optimized version of fls() is available > that > would work faster than this cool piece of bit magic.
If you're lucky, the compiler's idiom recogniser will spot this. You're generally better off using the builtins though, because then the compiler will expand them to something sensible (hopefully - old versions of gcc did horribly inefficient things for bswap and clz on platforms without native support). David _______________________________________________ [email protected] mailing list http://lists.freebsd.org/mailman/listinfo/svn-src-head To unsubscribe, send any mail to "[email protected]"
