diff options
| -rw-r--r-- | include/qemu/bitops.h | 29 |
1 files changed, 1 insertions, 28 deletions
diff --git a/include/qemu/bitops.h b/include/qemu/bitops.h index 8b88791862..b50629bb58 100644 --- a/include/qemu/bitops.h +++ b/include/qemu/bitops.h @@ -57,34 +57,7 @@ static unsigned long bitops_ctzl(unsigned long word) */ static inline unsigned long bitops_flsl(unsigned long word) { - int num = BITS_PER_LONG - 1; - -#if LONG_MAX > 0x7FFFFFFF - if (!(word & (~0ul << 32))) { - num -= 32; - word <<= 32; - } -#endif - if (!(word & (~0ul << (BITS_PER_LONG-16)))) { - num -= 16; - word <<= 16; - } - if (!(word & (~0ul << (BITS_PER_LONG-8)))) { - num -= 8; - word <<= 8; - } - if (!(word & (~0ul << (BITS_PER_LONG-4)))) { - num -= 4; - word <<= 4; - } - if (!(word & (~0ul << (BITS_PER_LONG-2)))) { - num -= 2; - - word <<= 2; - } - if (!(word & (~0ul << (BITS_PER_LONG-1)))) - num -= 1; - return num; + return BITS_PER_LONG - 1 - clzl(word); } /** |