PoC.arith.carrychain_inc

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This is a generic carry-chain abstraction for increment by one operations.

Y <= X + (0...0) & Cin

Entity Declaration:

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entity arith_carrychain_inc is
  generic (
    BITS      : positive
  );
  port (
    X   : in  std_logic_vector(BITS - 1 downto 0);
    CIn : in  std_logic                             := '1';
    Y   : out std_logic_vector(BITS - 1 downto 0)
  );
end entity;