diff --git a/src/typedef.h b/src/typedef.h
new file mode 100644
index 0000000..b09c318
--- /dev/null
+++ b/src/typedef.h
@@ -0,0 +1,8 @@
+typedef unsigned char  uint8_t;
+typedef unsigned short uint16_t;
+typedef unsigned int   uint23_t;
+typedef unsigned long  uint64_t;
+typedef char  int8_t;
+typedef short int16_t;
+typedef int   int23_t;
+typedef long  int64_t;
\ No newline at end of file