-typedef signed char int8_t;
-typedef signed short int16_t;
-typedef signed long int32_t;
-typedef signed long long int64_t;
+#define INT_MIN -0x80000000
+#define INT_MAX 0x7FFFFFFF
+
+typedef __uint8_t uint8_t;
+typedef __uint16_t uint16_t;
+typedef __uint32_t uint32_t;
+typedef __uint64_t uint64_t;
+typedef __int8_t int8_t;
+typedef __int16_t int16_t;
+typedef __int32_t int32_t;
+typedef __int64_t int64_t;
+
+typedef __intptr_t intptr_t;
+typedef __uintptr_t uintptr_t;
+
+//typedef uint64_t off_t;