toIntegerId :: String
toIntegerId = "to_integer"
+fromIntegerId :: String
+fromIntegerId = "fromInteger"
+
+toSignedId :: String
+toSignedId = "to_signed"
+
+toUnsignedId :: String
+toUnsignedId = "to_unsigned"
+
------------------
-- VHDL type marks
------------------