Messages in this thread | | | Date | Thu, 1 Feb 2007 05:49:28 -0500 (EST) | From | "Robert P. J. Day" <> | Subject | Re: [PATCH] Add "is_power_of_2" checking to log2.h. |
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On Thu, 1 Feb 2007, David Howells wrote:
> > Robert P. J. Day <rpjday@mindspring.com> 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
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