On 19 Oct 2014, at 13:02, Andriy Gapon <a...@freebsd.org> 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 _______________________________________________ svn-src-head@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/svn-src-head To unsubscribe, send any mail to "svn-src-head-unsubscr...@freebsd.org"
