Forum Discussion

Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
10 years ago

Decimal point arithmetic

Hi, I am trying to do some math involving degrees for my program. I have two values A and B, both 8 bit Std_logic_vector. I need to calculate the angle given by arctan(B/A). Since this is a very expe...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
10 years ago

--- Quote Start ---

With only 8 bit on A and B, it would be very easy to use a look up table to find the values you need.

A LUT is just a rom where you input value is the address (angle)

--- Quote End ---

Thank you! unfortunately im in a very space constrained environment so i cant spare the memory for a custom look up table! ironically, i have more programmable LUTs to spare than i do memory.