diff options
Diffstat (limited to 'ANDROID_3.4.5/include/asm-generic/bitops/fls64.h')
-rw-r--r-- | ANDROID_3.4.5/include/asm-generic/bitops/fls64.h | 36 |
1 files changed, 0 insertions, 36 deletions
diff --git a/ANDROID_3.4.5/include/asm-generic/bitops/fls64.h b/ANDROID_3.4.5/include/asm-generic/bitops/fls64.h deleted file mode 100644 index b097cf84..00000000 --- a/ANDROID_3.4.5/include/asm-generic/bitops/fls64.h +++ /dev/null @@ -1,36 +0,0 @@ -#ifndef _ASM_GENERIC_BITOPS_FLS64_H_ -#define _ASM_GENERIC_BITOPS_FLS64_H_ - -#include <asm/types.h> - -/** - * fls64 - find last set bit in a 64-bit word - * @x: the word to search - * - * This is defined in a similar way as the libc and compiler builtin - * ffsll, but returns the position of the most significant set bit. - * - * fls64(value) returns 0 if value is 0 or the position of the last - * set bit if value is nonzero. The last (most significant) bit is - * at position 64. - */ -#if BITS_PER_LONG == 32 -static __always_inline int fls64(__u64 x) -{ - __u32 h = x >> 32; - if (h) - return fls(h) + 32; - return fls(x); -} -#elif BITS_PER_LONG == 64 -static __always_inline int fls64(__u64 x) -{ - if (x == 0) - return 0; - return __fls(x) + 1; -} -#else -#error BITS_PER_LONG not 32 or 64 -#endif - -#endif /* _ASM_GENERIC_BITOPS_FLS64_H_ */ |