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library ieee;
use ieee.std_logic_1164.all;
use ieee.numeric_std.all;
entity tb_ent is
end;
architecture behav of tb_ent is
signal r : unsigned (31 downto 0);
begin
dut: entity work.ent
generic map (g => x"ffff_0001")
port map (res => r);
process
begin
wait for 1 ns;
assert r = x"ffff0001" severity failure;
wait;
end process;
end behav;
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