include/asm-generic/bitops/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  */
  11 static __always_inline unsigned int __ffs(unsigned long word)
  12 {
  13         return __builtin_ctzl(word);
  14 }
  15
  16 #endif