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[PATCH] bitops: generic fls64()

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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 <mita@miraclelinux.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Akinobu Mita
2006-03-26 01:39:10 -08:00
committed by Linus Torvalds
parent 136abb32d6
commit 2dfc383ad5
1 changed files with 12 additions and 0 deletions
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12
include/asm-generic/bitops/fls64.h Normal file
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#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_ */