library ieee; use ieee.numeric_bit.all; entity xnor23 is port ( a_i : in bit_vector (22 downto 0); b_i : in bit_vector (22 downto 0); c_o : out bit_vector (22 downto 0) ); end entity xnor23; architecture rtl of xnor23 is begin c_o <= a_i xnor b_i; end architecture rtl;