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 [8:0] abs8;
        input signed [7:0] a;
        begin
            abs8 = a<0 ? -a : a;
        end
    endfunction

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

endmodule