Aggiunti moduli Swap, TwoComplement, OperationCheck

OperationCheck.vhd

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+library IEEE;
+use IEEE.STD_LOGIC_1164.ALL;
+
+entity OperationCheck is
+	port(
+		X_SIGN, Y_SIGN : in std_logic;
+		OP, RES_SIGN : out std_logic
+	);
+end OperationCheck;
+
+architecture OperationCheckArch of OperationCheck is
+
+begin
+	OP <= X_SIGN xor Y_SIGN;
+	RES_SIGN <= X_SIGN;
+
+end OperationCheckArch;
+