builtin-__ffs.h

 1/* SPDX-License-Identifier: GPL-2.0 */
 2#ifndef _ASM_GENERIC_BITOPS_BUILTIN___FFS_H_
 3#define _ASM_GENERIC_BITOPS_BUILTIN___FFS_H_
 4
 5/**
 6 * __ffs - find first bit in word.
 7 * @word: The word to search
 8 *
 9 * Undefined if no bit exists, so code should check against 0 first.
10 */
11static __always_inline __attribute_const__ unsigned int __ffs(unsigned long word)
12{
13	return __builtin_ctzl(word);
14}
15
16#endif