59. Absolute Value

How do you plan to solve it?

//==================================================
// Module: abs8_func
// Description: Computes absolute value of signed 8-bit input
//==================================================
module abs8_func (
    input  wire signed [7:0] a,
    output wire [7:0] abs
);

    // ------------------------------------------------
    // Function definition: absolute value
    // ------------------------------------------------
    function automatic [7:0] abs8(input signed [7:0] x);
        begin
            abs8 = (x < 0) ? -x : x;  // Absolute value rule
        end
    endfunction

    // ------------------------------------------------
    // Use the function
    // ------------------------------------------------
    assign abs = abs8(a);

endmodule