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-rw-r--r--include/typedefs.h8
1 files changed, 8 insertions, 0 deletions
diff --git a/include/typedefs.h b/include/typedefs.h
index e2226fd..c10482c 100644
--- a/include/typedefs.h
+++ b/include/typedefs.h
@@ -1,3 +1,5 @@
+#ifndef TYPEDEFS_H
+#define TYPEDEFS_H
#include <stdint.h>
typedef uint8_t u8;
@@ -10,4 +12,10 @@ typedef int16_t i16;
typedef int32_t i32;
typedef int64_t i64;
+typedef union {
+ u8 a[4];
+ u32 d;
+} ipv4_t;
+
#define U32_MAX 4294967295
+#endif