59. Absolute Value

How do you plan to solve it?

module abs8_func (
    input  signed [7:0] a,
    output       [7:0] abs
);
    // ---------- Write function here----------
    function [7:0]abs8(input signed [7:0]x);
    begin
        abs8 = (x<0)?-x:x;
    end
    endfunction
    // Function called here
    assign abs = abs8(a);
endmodule