Aggiunto controllo risultato NaN

TypeCheck.vhd

@@ -0,0 +1,43 @@
+library IEEE;
+use IEEE.STD_LOGIC_1164.ALL;
+
+entity TypeCheck is
+	port(
+		N: in std_logic_vector(31 downto 0);
+		NaN, INF: out std_logic
+	);
+end TypeCheck;
+
+architecture TypeCheckArch of TypeCheck is
+	signal G_Bus: std_logic_vector(7 downto 0);
+	signal T_Bus: std_logic_vector(22 downto 0);
+	signal G: std_logic := '1';
+	signal T: std_logic := '0';
+begin
+	G_Bus <= N(30 downto 23);
+	T_Bus <= N(22 downto 0);
+	
+	G_compute: process (G_Bus)
+		variable G_tmp: std_logic;
+	begin
+		G_tmp := '1';
+		for i in G_Bus'range loop
+			G_tmp := G_tmp and G_Bus(i);
+		end loop;
+		G <= G_tmp;
+	end process;
+	
+	T_compute: process (T_Bus)
+		variable T_tmp: std_logic;
+	begin
+		T_tmp := '0';
+		for i in T_Bus'range loop
+			T_tmp := T_tmp or T_Bus(i);
+		end loop;
+		T <= T_tmp;
+	end process;
+	
+	NaN <= G and T;
+	INF <= G and (not T);
+end TypeCheckArch;
+