Call a function from a function in VHDL

What I want to do is create a bidimiensional array of integers and I want to do it in a function, but first I need to calculate the values of the integers form a mathematical operation with real numbers, I want it to do it in a for loopinside the function, so while I am doing the math operation and conversion I enter the numbers in the positions of the array. The array has to be bidimensional because I have to access it with two variables as indexes. I do not think that would cause a huge problem. I hope it can be done, what do you think about it Tricky??