likely.h

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#ifndef LIKELY_H_
#define LIKELY_H_

#if defined(__GNUC__) && __GNUC__ >= 3
#define likely(x) __builtin_expect (x, 1)
#define unlikely(x) __builtin_expect (x, 0)
#else
#define likely(x) (x)
#define unlikely(x) (x)
#endif

#endif /* LIKELY_H_ */