Call a function from a function in VHDL

Yes, it is for initializing a rom of integers, the values of the rom are integers converted from a math operation with real numbers, the value of the rom depend on two set of constants an unidimensional array of integers and an unidimensional array of reals. In order to sinthesise the code I convert the result of the math operation in an integer and that is what I save in the rom. Then I expect to read the rom in some process of the program.