On Iau, 2003-05-01 at 00:41, Linus Torvalds wrote:
> On 30 Apr 2003, Alan Cox wrote:
> >
> > It ought to be basically the same as ffs because if I remember rightly
> >
> > ffs(x^(x-1)) == fls(x)
>
> So did anybody time this? ffs() we have hardware support for on x86, and
> it's even reasonably efficient on some CPU's .. So this _should_ beat all
> new-comers, and obviously some people already have benchmark programs
> ready and willing..
Unfortunately on digging up my notes it seems I got ffs/fls backwards so it doesnt
help us a great deal.
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