diff options
| -rw-r--r-- | src/setup.c | 26 |
1 files changed, 2 insertions, 24 deletions
diff --git a/src/setup.c b/src/setup.c index 5543468..891fc43 100644 --- a/src/setup.c +++ b/src/setup.c @@ -211,33 +211,11 @@ void io_uring_free_probe(struct io_uring_probe *probe) free(probe); } -static int __fls(int x) +static inline int __fls(int x) { - int r = 32; - if (!x) return 0; - if (!(x & 0xffff0000u)) { - x <<= 16; - r -= 16; - } - if (!(x & 0xff000000u)) { - x <<= 8; - r -= 8; - } - if (!(x & 0xf0000000u)) { - x <<= 4; - r -= 4; - } - if (!(x & 0xc0000000u)) { - x <<= 2; - r -= 2; - } - if (!(x & 0x80000000u)) { - x <<= 1; - r -= 1; - } - return r; + return 8 * sizeof(x) - __builtin_clz(x); } static unsigned roundup_pow2(unsigned depth) |