| 1 | |
| 2 | #ifdef __GNUC__ |
| 3 | # define likely(x) __builtin_expect((x),1) |
| 4 | # define unlikely(x) __builtin_expect((x),0) |
| 5 | #else |
| 6 | # define likely(x) (x) |
| 7 | # define unlikely(x) (x) |
| 8 | #endif |
| 9 | |
| 10 | #ifndef __has_builtin |
| 11 | #define __has_builtin(x) 0 |
| 12 | #endif |
| 13 | |