#pragma once #include "./sys/types.h" #define NULL (void*)0 typedef __PTRDIFF_TYPE__ ptrdiff_t; // Signed integer type of the result of subtracting two pointers. #ifndef __always_inline #define __always_inline __inline__ #endif // 定义类型的缩写 typedef unsigned char uchar; typedef unsigned short ushort; typedef unsigned int uint; typedef unsigned long ul; typedef unsigned long long int ull; typedef long long int ll;