快速确定linux下long long最大值

#define INT_MAX ((int)(~0U>>1))
2 #define INT_MIN (-INT_MAX - 1)
3 #define UINT_MAX (~0U)
4 #define LONG_MAX ((long)(~0UL>>1))
5 #define LONG_MIN (-LONG_MAX - 1)
6 #define ULONG_MAX (~0UL)
7 #define LLONG_MAX ((long long)(~0ULL>>1))
8 #define LLONG_MIN (-LLONG_MAX - 1)
9 #define ULLONG_MAX (~0ULL)