ADMS's "adms.implicit.xml" (and the .c file from which it is generated) is missing a number of math functions defined in the Verilog-A Language Reference Manual. Some of these omitted functions are used in the BSIM-CMG.
The attached patch brings the list of functions ADMS will recognize in line with the list from the LRM v2.2
Thank you. Added to the repository. Also checked several other functions.
Included in version 2.3.3