diff --git a/types.h b/types.h
new file mode 100644
index 0000000..f0780a4
--- /dev/null
+++ b/types.h
@@ -0,0 +1,6 @@
+#pragma once
+
+typedef unsigned char  u8;
+typedef unsigned short u16;
+typedef unsigned int   u32;
+typedef unsigned long  u64;