`timescale 1ns / 1ps
//////////////////////////////////////////////////////////////////////////////////
// Company:
// Engineer:
//
// Create Date:    14:21:16 04/18/2019
// Design Name:
// Module Name:    barrel_shifter
// Project Name:
// Target Devices:
// Tool versions:
// Description:
//
// Dependencies:
//
// Revision:
// Revision 0.01 - File Created
// Additional Comments:
//
//////////////////////////////////////////////////////////////////////////////////
module barrel_shifter(
    input [3:0] a,
    input [1:0] sel,
    output [3:0] out
    );

wire[3:0] muxl0_i,muxl1_i,mux_l;
assign muxl0_i={1'b0,a[3],a[2],a[1]};
assign muxl1_i={1'b0,1'b0,mux_l[3],mux_l[2]};

genvar i;
generate
	for(i=0;i<4;i=i+1)
		begin
			mux2_1 l1(.a(muxl0_i[i]),.b(a[i]),.sel(sel[0]),.out(mux_l[i]));
			mux2_1 l2(.a(muxl1_i[i]),.b(mux_l[i]),.sel(sel[1]),.out(out[i]));
		end
endgenerate
endmodule