From: Akinobu Mita This patch introduces the C-language equivalent of the function: int fls64(__u64 x); In include/asm-generic/bitops/fls64.h This code largely copied from: include/linux/bitops.h Signed-off-by: Akinobu Mita Signed-off-by: Andrew Morton --- include/asm-generic/bitops/fls64.h | 12 ++++++++++++ 1 files changed, 12 insertions(+) diff -puN /dev/null include/asm-generic/bitops/fls64.h --- /dev/null 2003-09-15 06:40:47.000000000 -0700 +++ devel-akpm/include/asm-generic/bitops/fls64.h 2006-02-20 21:02:18.000000000 -0800 @@ -0,0 +1,12 @@ +#ifndef _ASM_GENERIC_BITOPS_FLS64_H_ +#define _ASM_GENERIC_BITOPS_FLS64_H_ + +static inline int fls64(__u64 x) +{ + __u32 h = x >> 32; + if (h) + return fls(h) + 32; + return fls(x); +} + +#endif /* _ASM_GENERIC_BITOPS_FLS64_H_ */ _