59. Absolute Value

How do you plan to solve it?

module abs8_func (
    input  signed [7:0] a,
    output       [7:0] abs
);
   
    function [7:0]abs8;
        input [7:0]x;
        begin 
           abs8 = x[7]?-x:x;
        end 
    endfunction
   
    assign abs = abs8(a);

endmodule