-#define bswap32(x) \
-({ \
- uint32_t __x = (x); \
- ((uint32_t)( \
- (((uint32_t)(__x) & (uint32_t)0x000000ffUL) << 24) | \
- (((uint32_t)(__x) & (uint32_t)0x0000ff00UL) << 8) | \
- (((uint32_t)(__x) & (uint32_t)0x00ff0000UL) >> 8) | \
- (((uint32_t)(__x) & (uint32_t)0xff000000UL) >> 24) )); \
-})
+#define INT8_MIN (-128)
+#define INT16_MIN (-32767-1)
+#define INT32_MIN (-2147483647-1)
+#define INT64_MIN (-(int64_t)(9223372036854775807)-1)
+#define INT8_MAX (127)
+#define INT16_MAX (32767)
+#define INT32_MAX (2147483647)
+#define INT64_MAX ((int64_t)(9223372036854775807))
+#define UINT8_MAX (255)
+#define UINT16_MAX (65535)
+#define UINT32_MAX (4294967295U)
+#define UINT64_MAX ((uint64_t)(18446744073709551615))