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library ieee;
use ieee.std_logic_1164.all;
use ieee.std_logic_arith.all;
entity tb_cmpeq is
end;
architecture behav of tb_cmpeq is
signal li : integer := 0;
signal ri : integer := 0;
signal l4 : std_logic_vector (3 downto 0) := "0000";
signal r3 : std_logic_vector (2 downto 0) := "000";
signal eq_u4u3 : boolean;
signal eq_s4s3 : boolean;
signal eq_u4s3 : boolean;
signal eq_s4u3 : boolean;
signal eq_u4i : boolean;
signal eq_iu3 : boolean;
signal eq_s4i : boolean;
signal eq_is3 : boolean;
begin
dut: entity work.cmpeq
port map (
l4 => l4,
r3 => r3,
li => li,
ri => ri,
eq_u4u3 => eq_u4u3,
eq_s4s3 => eq_s4s3,
eq_u4s3 => eq_u4s3,
eq_s4u3 => eq_s4u3,
eq_u4i => eq_u4i,
eq_iu3 => eq_iu3,
eq_s4i => eq_s4i,
eq_is3 => eq_is3);
process
begin
for i in -8 to 7 loop
li <= i;
l4 <= conv_std_logic_vector (i, 4);
for j in -4 to 3 loop
r3 <= conv_std_logic_vector (j, 3);
ri <= j;
wait for 1 ns;
report "u4u3: " & integer'image(i) & " = " & integer'image(j) & " = "
& boolean'image(eq_u4u3);
report "s4s3: " & integer'image(i) & " = " & integer'image(j) & " = "
& boolean'image(eq_s4s3);
report "u4s3: " & integer'image(i) & " = " & integer'image(j) & " = "
& boolean'image(eq_u4s3);
report "s4u3: " & integer'image(i) & " = " & integer'image(j) & " = "
& boolean'image(eq_s4u3);
report "u4i: " & integer'image(i) & " = " & integer'image(j) & " = "
& boolean'image(eq_u4i);
report "iu3: " & integer'image(i) & " = " & integer'image(j) & " = "
& boolean'image(eq_iu3);
report "s4i: " & integer'image(i) & " = " & integer'image(j) & " = "
& boolean'image(eq_s4i);
report "is3: " & integer'image(i) & " = " & integer'image(j) & " = "
& boolean'image(eq_is3);
end loop;
end loop;
wait;
end process;
end behav;
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