Messages in this thread | | | From | Eric Dumazet <> | Subject | Re: [RFC] div64_64 support | Date | Tue, 6 Mar 2007 15:19:20 +0100 |
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On Tuesday 06 March 2007 14:34, Andi Kleen wrote:
> - return x; > + int s; > + u32 y; > + u64 b; > + u64 bs; > + > + y = 0; > + for (s = 63; s >= 0; s -= 3) { > + y = 2 * y; > + b = 3 * y * (y+1) + 1; > + bs = b << s; > + if (x >= bs && (b == (bs>>s))) { /* avoid overflow */ > + x -= bs; > + y++; > + } > + } > + return y; > } >
Andi
<rant> Let me see... You throw code like that and expect someone to actually understand it in one year, and be able to correct a bug ? </rant>
Please add something, an URL or even better a nice explanation, per favor...
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