Messages in this thread | | | From | (Joe Korty) | Subject | Re: [PATCH] joydev: fix HZ->millisecond transformation | Date | Fri, 20 Dec 2002 09:52:28 -0500 (EST) |
| |
[ repost -- I am going to have to get outgoing mail fixed on my lkml-reading machine ]
> On Fri, Dec 20, 2002 at 02:41:50AM -0800, george anzinger wrote: >> Bjorn Helgaas wrote: >>> >>> * fix a problem with HZ->millisecond transformation on >>> non-x86 archs (from 2.5 change by vojtech@suse.cz) >>> [...] >>> +#define MSECS(t) (1000 * ((t) / HZ) + 1000 * ((t) % HZ) / HZ) >>> [...] > Though it might be easier to say (1000 * t) / HZ, now that I think about > it.
The more complex version avoids integer overflow for more values of 't' in the (1000 * t) subexpression.
Joe - 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/
| |