1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef _ASM_GENERIC_BITOPS_FLS_H_
3 #define _ASM_GENERIC_BITOPS_FLS_H_
6 * fls - find last (most-significant) bit set
7 * @x: the word to search
9 * This is defined the same way as ffs.
10 * Note fls(0) = 0, fls(1) = 1, fls(0x80000000) = 32.
13 static __always_inline int fls(unsigned int x)
19 if (!(x & 0xffff0000u)) {
23 if (!(x & 0xff000000u)) {
27 if (!(x & 0xf0000000u)) {
31 if (!(x & 0xc0000000u)) {
35 if (!(x & 0x80000000u)) {
42 #endif /* _ASM_GENERIC_BITOPS_FLS_H_ */