Kumar Gala <[EMAIL PROTECTED]> wrote:
>
> On Jun 11, 2008, at 5:54 AM, Haavard Skinnemoen wrote:
>
> > Kumar Gala <[EMAIL PROTECTED]> wrote:
> >> +/*
> >> + * fls: find last (most-significant) bit set.
> >> + * Note fls(0) = 0, fls(1) = 1, fls(0x80000000) = 32.
> >> + */
> >> +static __inline__ int fls(unsigned int x)
> >> +{
> >> + return __ilog2(x) + 1;
> >> +}
> >
> > __ilog2(0) returns -1?
>
> it does.
In general, or just on powerpc? If it's the latter, could you add a
comment so that people won't blindly copy it into their architecture's
bitops.h?
Haavard
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