Minki/linux
1
0
Fork 1
mirror of https://github.com/torvalds/linux.git synced 2024-12-28 13:51:44 +00:00
Code Issues Packages Projects Releases Wiki Activity

[PATCH] bitops: generic fls64()

Browse Source 
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
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

12
include/asm-generic/bitops/fls64.h Normal file
View File

@ -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_ */