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
            if (x==8'sh80) begin
            abs8 = x;
            end
            else begin
            abs8 = (x<0) ? -x: x;
            end
        end

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

endmodule