Types other than DComplex, double, float, int, UChar, and SChar are not fully implemented in the Essential Math Module. As mentioned in Nonstandard Numeric Types, you must do two things to achieve their full functionality:

Note that most operations work without these additional instructions. However, some portions of the library are unavailable, resulting in compiler errors if you try to access them. Should these problems occur, follow the instructions below. They are only necessary for the portions of the library that you need.