Takes in a 32-bit signed integer and returns its absolute value. This is not meant for synthesis!
Bring in the function at the start of the body of your module like so:
`include "abs_function.vh"
Pass the function values which, at elaboration time, are either constant or expressions which evaluates to constants. Then use the output value as an integer for a localparam, genvar, etc...
Since this is an included file, it must be idempotent. (defined only once globally)
`ifndef ABS_FUNCTION
`define ABS_FUNCTION
function integer abs;
input integer value;
begin
abs = (value < 0) ? -value : value;
end
endfunction
`endif