Function
ROUND(CTTD,2)
TRUNCATE(CTTD,2)
CEILING(CTTD)
FLOOR(CTTD)
ABS(CTTD)
SIGN(CTTD)
SQRT(CTTD)
POWER(CTTD,2)
RAND()
The blue portion of the function should be a Call To The Database (CTTD) like shown below
The purple portion (if required) is a configuration argument
Beyond this, these functions work the same way they do in programming languages or on a spreadsheet (like LibreOffice Calc)