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 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */

 /* vim: set ts=8 sts=2 et sw=2 tw=80: */

 /* This Source Code Form is subject to the terms of the Mozilla Public

  * License, v. 2.0. If a copy of the MPL was not distributed with this

  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

 /*

  * MOZ_LIKELY and MOZ_UNLIKELY macros to hint to the compiler how a

  * boolean predicate should be branch-predicted.

  */

 #ifndef mozilla_Likely_h

 #define mozilla_Likely_h

 #if defined(__clang__) || defined(__GNUC__)

 #  define MOZ_LIKELY(x)   (__builtin_expect(!!(x), 1))

 #  define MOZ_UNLIKELY(x) (__builtin_expect(!!(x), 0))

 #else

 #  define MOZ_LIKELY(x)   (!!(x))

 #  define MOZ_UNLIKELY(x) (!!(x))

 #endif

 #endif /* mozilla_Likely_h */