| /* |
| * Copyright (c) 2023 Nordic Semiconductor ASA |
| * |
| * SPDX-License-Identifier: Apache-2.0 |
| */ |
| |
| #ifndef NSI_COMMON_SRC_NSI_INTERNAL_H |
| #define NSI_COMMON_SRC_NSI_INTERNAL_H |
| |
| #include <stdint.h> |
| |
| #ifdef __cplusplus |
| extern "C" { |
| #endif |
| |
| /** |
| * |
| * @brief find least significant bit set in a 32-bit word |
| * |
| * This routine finds the first bit set starting from the least significant bit |
| * in the argument passed in and returns the index of that bit. Bits are |
| * numbered starting at 1 from the least significant bit. A return value of |
| * zero indicates that the value passed is zero. |
| * |
| * @return least significant bit set, 0 if @a op is 0 |
| */ |
| |
| static inline unsigned int nsi_find_lsb_set(uint32_t op) |
| { |
| return __builtin_ffs(op); |
| } |
| |
| #ifdef __cplusplus |
| } |
| #endif |
| |
| #endif /* NSI_COMMON_SRC_NSI_INTERNAL_H */ |