70. Universal Barrel Shifter

/*Write your code here*/
module univ_barrel8(
    input  [7:0] x,
    input  [2:0] sh,
    input  [2:0] mode,
    output reg [7:0] y
);
    always @(*) begin
        case(mode)
            3'b000:  y = x;
            3'b001:  y = (x << sh) & 8'hFF;
            3'b010:  y = (x >> sh);
            3'b011:  y = $signed(x) >>> sh;
            3'b100:  y = ((x << sh) | (x >> (8 - sh))) & 8'hFF;
            3'b101:  y = ((x >> sh) | (x << (8 - sh))) & 8'hFF;
            default: y = x;
        endcase
    end
endmodule