The type can be specified with one of char uchar short ushort int uint float double, or one of int8 uint8 int16 uint16 int32 uint32 float32 float64.
內定的資料形態有兩種寫法：一種是char uchar short ushort int uint float double,另外一種是具有位元長度的int8 uint8 int16 uint16 int32 uint32 float32 float64。