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) bit set
       7             :  * @x: the word to search
       8             :  *
       9             :  * This is defined the same way as ffs.
      10             :  * Note fls(0) = 0, fls(1) = 1, fls(0x80000000) = 32.
      11             :  */
      12             : static __always_inline int fls(unsigned int x)
      13             : {
      14   250221678 :         return x ? sizeof(x) * 8 - __builtin_clz(x) : 0;
      15             : }
      16             : 
      17             : #endif