__ffz.h

 1#ifndef _ASM_GENERIC_BITOPS_FFZ_H_
 2#define _ASM_GENERIC_BITOPS_FFZ_H_
 3
 4/*
 5 * ffz - find first zero in word.
 6 * @word: The word to search
 7 *
 8 * Undefined if no zero exists, so code should check against ~0UL first.
 9 */
10#define ffz(x)  __ffs(~(x))
11
12#endif /* _ASM_GENERIC_BITOPS_FFZ_H_ */