Re: Linux 3.1-rc9

[Geert Uytterhoeven]

On Tue, Oct 18, 2011 at 00:08, H. Peter Anvin <hpa@xxxxxxxxx> wrote:
> On 10/17/2011 02:39 PM, Ingo Molnar wrote:
>>> We can do much better than that with reciprocal multiplication.
>>
>> Yes, 2^64/1e9 is the reciprocal.
>
> What I mean is that it's pretty easy to work it so it doesn't have the
> errors. ÂWe have 32*32 = 64 multiplication on all 32-bit platforms I'm
> 99.9% sure.

I assume you mean "we have in hardware"?

Is that muldi3?

$ git ls-files "*muldi3*"
arch/arm/lib/muldi3.S
arch/blackfin/lib/muldi3.S
arch/frv/lib/__muldi3.S
arch/m68k/lib/muldi3.c
arch/microblaze/lib/muldi3.c
arch/sparc/lib/muldi3.S
$

Gr{oetje,eeting}s,

            Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@xxxxxxxxxxxxxx

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
             Â Â -- Linus Torvalds
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/