[people/arne_f/kernel.git] / include / asm-generic / bitops / builtin-__fls.h

/* 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) set bit in a long word
 * @word: the word to search
 *
 * Undefined if no set bit exists, so code should check against 0 first.
 */
static __always_inline unsigned long __fls(unsigned long word)
{
	return (sizeof(word) * 8) - 1 - __builtin_clzl(word);
}

#endif
Commit	Line	Data
b2441318	1	/* SPDX-License-Identifier: GPL-2.0 */
048fa2df CM	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	return (sizeof(word) * 8) - 1 - __builtin_clzl(word);
	14	}
	15
	16	#endif