From 483eb2f56657e8e7f419ab1a4fab8dce9ade8609 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sat, 27 Apr 2024 20:24:20 +0200 Subject: Adding upstream version 14.2.21. Signed-off-by: Daniel Baumann --- src/zstd/contrib/pzstd/utils/Likely.h | 28 ++++++++++++++++++++++++++++ 1 file changed, 28 insertions(+) create mode 100644 src/zstd/contrib/pzstd/utils/Likely.h (limited to 'src/zstd/contrib/pzstd/utils/Likely.h') diff --git a/src/zstd/contrib/pzstd/utils/Likely.h b/src/zstd/contrib/pzstd/utils/Likely.h new file mode 100644 index 00000000..7cea8da2 --- /dev/null +++ b/src/zstd/contrib/pzstd/utils/Likely.h @@ -0,0 +1,28 @@ +/* + * Copyright (c) 2016-present, Facebook, Inc. + * All rights reserved. + * + * This source code is licensed under both the BSD-style license (found in the + * LICENSE file in the root directory of this source tree) and the GPLv2 (found + * in the COPYING file in the root directory of this source tree). + */ + +/** + * Compiler hints to indicate the fast path of an "if" branch: whether + * the if condition is likely to be true or false. + * + * @author Tudor Bosman (tudorb@fb.com) + */ + +#pragma once + +#undef LIKELY +#undef UNLIKELY + +#if defined(__GNUC__) && __GNUC__ >= 4 +#define LIKELY(x) (__builtin_expect((x), 1)) +#define UNLIKELY(x) (__builtin_expect((x), 0)) +#else +#define LIKELY(x) (x) +#define UNLIKELY(x) (x) +#endif -- cgit v1.2.3