On Tue, 27 Feb 2007 01:05:26 +0100 (MET) Jan Engelhardt <[EMAIL PROTECTED]> wrote:
> > On Feb 26 2007 15:44, Stephen Hemminger wrote: > >> >- x = (2 * x + (uint32_t) div64_64(a, x*x)) / 3; > >> >+ x = (2 * x + (u32) (a / x*x)) / 3; > >> > >> Previously there was div64_64(a, x*x) which is equivalent to > >> (a)/(x*x), or just: a/(x^2). But now you do a/x*x, which is > >> equivalent to a*x/x (in the domain of real numbers). Furthermore, > >> a/x*x is a-(a%x), which does not even remotely match a/(x^2). > >> > >Been there, done that, don't want to repeat it... > > I am sorry I don't quite follow. Once before a missed paren's caused a TCP congestion window bug that took 6 months before it was found... -- Stephen Hemminger <[EMAIL PROTECTED]> - To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html
