Cregit: Linux 6.18: builtin-fls.h

Contributors: 4
Author	Tokens	Token Proportion	Commits	Commit Proportion
Catalin Marinas	36	92.31%	1	25.00%
Kees Cook	1	2.56%	1	25.00%
Greg Kroah-Hartman	1	2.56%	1	25.00%
Matthew Wilcox	1	2.56%	1	25.00%
Total	39		4

/* 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 __attribute_const__ int fls(unsigned int x)
{
	return x ? sizeof(x) * 8 - __builtin_clz(x) : 0;
}

#endif