Commit 176d8b0c authored Mar 26, 2006 by Akinobu Mita Committed by Linus Torvalds Mar 26, 2006

[PATCH] bitops: generic ffz()



This patch introduces the C-language equivalent of the function: unsigned long
ffz(unsigned long word);

In include/asm-generic/bitops/ffz.h

This code largely copied from: include/asm-parisc/bitops.h

Signed-off-by: Akinobu Mita <mita@miraclelinux.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

parent c1226a00

include/asm-generic/bitops/ffz.h

0 → 100644

+12 −0

Original line number	Diff line number	Diff line
		#ifndef _ASM_GENERIC_BITOPS_FFZ_H_
		#define _ASM_GENERIC_BITOPS_FFZ_H_

		/*
		* ffz - find first zero in word.
		* @word: The word to search
		*
		* Undefined if no zero exists, so code should check against ~0UL first.
		*/
		#define ffz(x) __ffs(~(x))

		#endif /* _ASM_GENERIC_BITOPS_FFZ_H_ */