DPDK 23.11.0
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rte_branch_prediction.h
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1/* SPDX-License-Identifier: BSD-3-Clause
2 * Copyright(c) 2010-2014 Intel Corporation
3 */
4
10#ifndef _RTE_BRANCH_PREDICTION_H_
11#define _RTE_BRANCH_PREDICTION_H_
12
13#ifdef __cplusplus
14extern "C" {
15#endif
16
26#ifndef likely
27#ifdef RTE_TOOLCHAIN_MSVC
28#define likely(x) (!!(x))
29#else
30#define likely(x) __builtin_expect(!!(x), 1)
31#endif
32#endif /* likely */
33
43#ifndef unlikely
44#ifdef RTE_TOOLCHAIN_MSVC
45#define unlikely(x) (!!(x))
46#else
47#define unlikely(x) __builtin_expect(!!(x), 0)
48#endif
49#endif /* unlikely */
50
51#ifdef __cplusplus
52}
53#endif
54
55#endif /* _RTE_BRANCH_PREDICTION_H_ */