DAW "Conversion library 20.0" had a PUBLIC function named DecToHex

Code:
    Function DecToHex Integer iDec Returns String
        String sHex


        Move "" to sHex
        Repeat
            Move (Mid ("0123456789ABCDEF", 1, ((iDec iand |CI$0F) + 1)) + sHex) to sHex
            Move (iDec / |CI$10) to iDec
        Until (iDec = 0)


        Function_Return sHex
    End_Function
The same is missing in 20.1 lib. Why ?