diff --git a/axl_types.h b/axl_types.h
index 4fa53d4..1275cc7 100644
--- a/axl_types.h
+++ b/axl_types.h
@@ -6,6 +6,7 @@ typedef unsigned char       u8;
 typedef unsigned char       b8;
 typedef signed short        i16;
 typedef unsigned short      u16;
+typedef signed int          f16_16; //signed 32-bit fixed-point 16.16
 typedef signed int          i32;
 typedef unsigned int        u32;
 typedef signed long long    i64;