ref: 83c9fe6cbeb3e238c585de2be59ba6544891fd22
dir: /posix/stdint.h/
typedef s16int int16_t; typedef u16int uint16_t; typedef s32int int32_t; typedef u32int uint32_t; #define INT32_MAX 0x7fffffff #define INT_MAX INT32_MAX #define UINT32_MAX 0xffffffffU #define UINT_MAX UINT32_MAX