osfmk/mach/branch_predicates.h

   1 /*
   2  * Copyright (c) 2000-2009 Apple Inc. All rights reserved.
   3  *
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   6  * This file contains Original Code and/or Modifications of Original Code
   7  * as defined in and that are subject to the Apple Public Source License
   8  * Version 2.0 (the 'License'). You may not use this file except in
   9  * compliance with the License. The rights granted to you under the License
  10  * may not be used to create, or enable the creation or redistribution of,
  11  * unlawful or unlicensed copies of an Apple operating system, or to
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  13  * terms of an Apple operating system software license agreement.
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  15  * Please obtain a copy of the License at
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  18  * The Original Code and all software distributed under the License are
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  28
  29
  30 #ifndef _MACH_BRANCH_PREDICATES_H
  31 #define _MACH_BRANCH_PREDICATES_H
  32
  33 #define __probable(x)   __builtin_expect(!!((long)(x)), 1L)
  34 #define __improbable(x) __builtin_expect(!!((long)(x)), 0L)
  35 #endif /* _MACH_BRANCH_PREDICATES_H */