5c7dd7acc3
repo: https://github.com/T-head-Semi/linux commit: b1313fe517ca3703119dcc99ef3bbf75ab42bcfb Change-Id: I6cbb35294024ea3a66140e311f4bb705fd7fd626
18 lines
412 B
C
18 lines
412 B
C
/* SPDX-License-Identifier: GPL-2.0 */
|
|
#ifndef _ASM_GENERIC_BITOPS_BUILTIN_FLS_H_
|
|
#define _ASM_GENERIC_BITOPS_BUILTIN_FLS_H_
|
|
|
|
/**
|
|
* fls - find last (most-significant) bit set
|
|
* @x: the word to search
|
|
*
|
|
* This is defined the same way as ffs.
|
|
* Note fls(0) = 0, fls(1) = 1, fls(0x80000000) = 32.
|
|
*/
|
|
static __always_inline int fls(unsigned int x)
|
|
{
|
|
return x ? sizeof(x) * 8 - __builtin_clz(x) : 0;
|
|
}
|
|
|
|
#endif
|