题解 | #使用函数实现数据大小端转换#

`timescale 1ns/1ns
module function_mod(
	input [3:0]a,
	input [3:0]b,
	
	output [3:0]c,
	output [3:0]d
);
	function [3:0] dout(
		input [3:0] din
	);
		integer i;
		for (i = 0; i < 4; i = i+1) begin
			dout[i] = din[3-i];
		end
	endfunction

	assign c = dout(a);
	assign d = dout(b);

endmodule