-------------------------------------------------------------------------------
-- Synthesizable examples cover a large set of VHDL synthesizable constructs --
-- All examples have been synthesized with the Exemplar logic Core           --
-- Copyright 1995, Zainalabedin Navabi navabi@ece.ut.ac.ir navabi@ece.neu.edu--
-------------------------------------------------------------------------------
LIBRARY ieee;
USE ieee.std_logic_1164.ALL;
--
LIBRARY exemplar;
USE exemplar.exemplar_1164.ALL;
USE exemplar.exemplar.ALL;

ENTITY cascadable_comparator IS
  PORT (a, b : IN std_logic_vector (3 DOWNTO 0); 
        comp_in : IN std_logic_vector (2 DOWNTO 0); 
        comp_out : OUT std_logic_vector (2 DOWNTO 0));
END;

ARCHITECTURE dataflow OF cascadable_comparator IS
BEGIN
  comp_out <= "100" WHEN a > b ELSE "001" WHEN b > a ELSE comp_in;
END dataflow;