On Thu, 1 Feb 2007, David Howells wrote:
>
> Robert P. J. Day <[email protected]> wrote:
>
> > +#define is_power_of_4(x) is_power_of_2(x) && (ffs(x) & 1))
>
> If this is such a commonly implemented op, it should probably be implemented
> globally too.
there are only two checks of the form "is_power_of_4" in the entire
tree, and they're both in the power pc stuff, so i doubt it's worth
trying to formalize that in any way.
rday
--
========================================================================
Robert P. J. Day
Linux Consulting, Training and Annoying Kernel Pedantry
Waterloo, Ontario, CANADA
http://www.fsdev.dreamhosters.com/wiki/index.php?title=Main_Page
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