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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>
12 lines
286 B
C
12 lines
286 B
C
#ifndef _ASM_GENERIC_BITOPS_FFZ_H_
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#define _ASM_GENERIC_BITOPS_FFZ_H_
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/*
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* ffz - find first zero in word.
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* @word: The word to search
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*
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* Undefined if no zero exists, so code should check against ~0UL first.
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*/
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#define ffz(x) __ffs(~(x))
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#endif /* _ASM_GENERIC_BITOPS_FFZ_H_ */
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