VHDL Component Declaration
The following VHDL component declaration is located in the VHDL Design File (.vhd) Definition ALTERA_PRIMITIVES_COMPONENTS.VHDin the<Quartus® Prime installation directory>\libraries\vhdl\altera directory.
COMPONENT LATCH
   PORT (d  : IN STD_LOGIC;
        ena : IN STD_LOGIC;
        q   : OUT STD_LOGIC);
END COMPONENT;