Messages in this thread | | | Date | Mon, 26 Mar 2012 22:18:52 +0200 | Subject | Re: [PATCH 1/1] vsprintf: optimize decimal conversion (again) | From | Geert Uytterhoeven <> |
| |
On Mon, Mar 26, 2012 at 22:13, Andrew Morton <akpm@linux-foundation.org> wrote: > On Mon, 26 Mar 2012 21:56:38 +0200 > Denys Vlasenko <vda.linux@googlemail.com> 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@linux-m68k.org
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. -- Linus Torvalds -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
| |