Line data    Source code

       1             : /* SPDX-License-Identifier: GPL-2.0 */
       2             : #ifndef _ASM_GENERIC_BITOPS_BUILTIN___FLS_H_
       3             : #define _ASM_GENERIC_BITOPS_BUILTIN___FLS_H_
       4             : 
       5             : /**
       6             :  * __fls - find last (most-significant) set bit in a long word
       7             :  * @word: the word to search
       8             :  *
       9             :  * Undefined if no set bit exists, so code should check against 0 first.
      10             :  */
      11             : static __always_inline unsigned long __fls(unsigned long word)
      12             : {
      13 48476762411 :         return (sizeof(word) * 8) - 1 - __builtin_clzl(word);
      14             : }
      15             : 
      16             : #endif