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library ieee; use ieee.std_logic_1164.all; entity ent is port ( clk : in std_logic; input : in std_logic; output : out std_logic ); end entity ent; architecture rtl of ent is signal r : std_logic; begin process (clk) begin if rising_edge(clk) then r <= input; end if; end process; output <= r; end architecture rtl;