| Ken Liu | 24dffb2 | 2021-02-10 11:03:58 +0800 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright (c) 2021, Arm Limited. All rights reserved. | ||||
| 3 | * | ||||
| 4 | * SPDX-License-Identifier: BSD-3-Clause | ||||
| 5 | * | ||||
| 6 | */ | ||||
| 7 | #ifndef __BITOPS_H__ | ||||
| 8 | #define __BITOPS_H__ | ||||
| 9 | |||||
| 10 | #include <stdint.h> | ||||
| 11 | |||||
| 12 | /* Check if there is only one bit availiable in a 32bit number */ | ||||
| 13 | #define IS_ONLY_ONE_BIT_IN_UINT32(n) \ | ||||
| 14 | ((uint32_t)(n) && !((uint32_t)(n) & ((uint32_t)(n)-1))) | ||||
| 15 | #endif /* __BITOPS_H__ */ | ||||