Re: [PATCH] Add "is_power_of_2" checking to log2.h.
From: Valdis . Kletnieks
Date: Thu Feb 01 2007 - 15:18:32 EST
On Thu, 01 Feb 2007 13:39:15 +0100, Tim Schmielau said:
> #define is_power_of_4(x) (is_power_of_2_or_zero(x) \
> && (x & ((typeof(x))0x55555555)))
Those 5's are going to need more magic if x is a 64-bit typeof?
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