Re: [PATCH 1/1] vsprintf: optimize decimal conversion (again)

[Geert Uytterhoeven]

On Mon, Mar 26, 2012 at 22:13, Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> wrote:
> On Mon, 26 Mar 2012 21:56:38 +0200
> Denys Vlasenko <vda.linux@xxxxxxxxxxxxxx> wrote:
>
>> >> +#if BITS_PER_LONG != 32 || (~(0ULL)>>1) != ((1ULL<<63)-1)
>> >
>> > What's this for?
>>
>> The second check should be just BITS_PER_LONG_LONG != 64,
>> but we don't have BITS_PER_LONG_LONG.
>
> So let's add BITS_PER_LONG_LONG rather than hacking around its absence!

I don't think Linux runs on anything with BITS_PER_LONG_LONG != 64...

BTW, what about CPUs with slow 32x32 multiplication and/or slow 64-bit
division?

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
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