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--! @file fastmux.vhd

--! @brief Multiplexor.

--! @author Julián Andrés Guarín Reyes.

-- RAYTRAC

-- Author Julian Andres Guarin

-- fastmux.vhd

-- This file is part of raytrac.

-- 

--     raytrac is free software: you can redistribute it and/or modify

--     it under the terms of the GNU General Public License as published by

--     the Free Software Foundation, either version 3 of the License, or

--     (at your option) any later version.

-- 

--     raytrac is distributed in the hope that it will be useful,

--     but WITHOUT ANY WARRANTY; without even the implied warranty of

--     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

--     GNU General Public License for more details.

-- 

--     You should have received a copy of the GNU General Public License

--     along with raytrac.  If not, see <http://www.gnu.org/licenses/>.

library ieee;

use ieee.std_logic_1164.all;

entity fastmux is

        generic (

                width : integer := 18

        )

        port (

                a,b:in std_logic_vector(w-1 downto 0);

                s:in std_logic;

                c: out std_logic_vector(w-1 downto 0)

        )

end entity;

architecture fastmux_arch of fastmux is

begin

        muxgen:

        for i in 0 to w-1 generate

                c(i) <= (a(i) and not(s(i))) or (b(i) and s(i));

        end generate muxgen;

end fastmux_arch;