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==-128)?x:(x<0)?-x:x;
    end
    endfunction 



    // Function called here
    assign abs = abs8(a);

endmodule