inverse sine FPGA

[Betty Boop]

I’m implementing inverse sine inside the FPGA VI. To do that, I use lookup table/LUT. I found the attached VI. I’m just wondering if there’s a way that I could be the one to set the input values in the LUT? In the attached VI, the input value is between 0-1023 which is the ‘address’. Is there a way that I could customize LUT for the input value (i.e. input values could be: -1, 0.8, 0.6.... not necessarily the address which is 0,1,...1023)? It’s because I’m having a hard time utilizing the attached VI in mapping the input and output to their true values (i.e. -1 to 1 for input, -pi/2 to pi/2 for output). Thank you very much for your time!