wd_miracle

一. 定义 #define likely(x) (__builtin_constant_p(x) ? !!(x) : __branch_check__(x, 1)) #define unlikely(x) (__builtin_constant_p(x) ? !!(x) : __branch_check__(x, 0)) __builtin_constant_p(x) : int __builtin_constant_p (exp) [Built-in Function]...