====== Compound types ======
===== Definitions =====
==== composite_type_definition ====
  * [[.:bnf#array_type_definition]]
  * [[.:bnf#record_type_definition]]

===== Examples =====
//mt_word// is declared as a bit vector of the width 32, with the indices rising from left to right.
<code vhdl>
TYPE my_word IS ARRAY ( 0 TO 31 )
      OF bit ;
</code>

----

//data_in// is declared as a vector of the type //five_level_logic// and the width 8, with the indices descending from left to right.
<code vhdl>
TYPE data_in IS ARRAY ( 7 DOWNTO 0 )
      OF five_level_logic 
</code>

----

//memory// is declared as a vector of the type //my_word// with an arbitrary width (<>). Direction and maximum width is determined by the type //integer// .
<code vhdl>
TYPE memory IS ARRAY (integer
      RANGE <>) OF my_word ;
</code>

----

//t// is declared as a vector of the type //element// with the width 1+( //max// - //min// ) [type //positive//] .
<code vhdl>
TYPE t IS ARRAY
   (positive RANGE min TO max)
                    OF element;
</code>

----

//date// is declared as Record which consists of the elements //day// , //month// and //year// .
<code vhdl>
TYPE date IS
   RECORD
      day   : integer RANGE 1 TO 31;
      month : month_name;
      year  : integer RANGE 0 TO 2100;
   END RECORD ;
</code>