compiler.h

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#ifndef _INCLUDE_COMPILER_H_
#define _INCLUDE_COMPILER_H_
 
#if defined (__GNUC__)
    #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 // _INCLUDE_COMPILER_H_