diff --git a/axl_types.h b/axl_types.h
new file mode 100644
index 0000000..4fa53d4
--- /dev/null
+++ b/axl_types.h
@@ -0,0 +1,18 @@
+#ifndef AXL_TYPES_H
+#define AXL_TYPES_H
+
+typedef signed char         i8;
+typedef unsigned char       u8;
+typedef unsigned char       b8;
+typedef signed short        i16;
+typedef unsigned short      u16;
+typedef signed int          i32;
+typedef unsigned int        u32;
+typedef signed long long    i64;
+typedef unsigned long long  u64;
+
+#define true 1 
+#define false 0
+#define NULL ((void*)0)
+
+#endif // !AXL_TYPES_H