On Fri, Sep 24, 2010 at 01:50:39AM +0400, malc wrote:
> On Thu, 23 Sep 2010, Stefan Hajnoczi wrote:
>
> > The get_bits_from_size() calculates the log base-2 of a number. This is
> > useful in bit manipulation code working with power-of-2s.
> >
> > Currently used by qcow2 and needed by qed in a follow-on patch.
>
> int ilog2 (size_t size)
> {
> if (size & (size - 1))
> return -1;
>
> return __builtin_ctzl (size);
> }
>
> Ifdef WIN64 omitted for brevity.What is the situation with WIN64? Stefan
