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https://github.com/torvalds/linux
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Tip revision: 26bc420b59a38e4e6685a73345a0def461136dce authored by Linus Torvalds on 26 January 2015, 04:04:41 UTC
Linux 3.19-rc6
Tip revision: 26bc420
builtin-ffs.h
#ifndef _ASM_GENERIC_BITOPS_BUILTIN_FFS_H_
#define _ASM_GENERIC_BITOPS_BUILTIN_FFS_H_

/**
 * ffs - find first bit set
 * @x: the word to search
 *
 * This is defined the same way as
 * the libc and compiler builtin ffs routines, therefore
 * differs in spirit from the above ffz (man ffs).
 */
static __always_inline int ffs(int x)
{
	return __builtin_ffs(x);
}

#endif
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