Re: [PATCH] 2.4.22pre10: {,un}likely_p() macros for pointers
From: Andrew Morton
Date: Mon Aug 11 2003 - 14:22:41 EST
Albert Cahalan <albert@xxxxxxxxxxxxxxxxxxxxx> wrote:
>
> -#define likely(x) __builtin_expect((x),1)
> -#define unlikely(x) __builtin_expect((x),0)
> +#define likely(x) __builtin_expect(!!(x),1)
> +#define unlikely(x) __builtin_expect(!!(x),0)
Odd. I thought we fixed that ages ago.
Being a simple soul, I prefer __builtin_expect((x) != 0, 1).
-
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