Operadores Aritméticos em VHDL

Implícitos no Standard.vhd

Alguns operadores estão definidos implicitamente na linguagem VHDL

--
   function "+" ( a, b: integer ) return integer;
   function "+" (anonymous: real) return real;
   function "+" (anonymous, anonymous2: real) return real;
   function "+" (anonymous1: TIME) return TIME;
   function "+" (anonymous1, anonymous2: TIME) return TIME;

numeric_std

--
  function "+" (L, R: UNSIGNED) return UNSIGNED;
  function "+" (L, R: SIGNED) return SIGNED;
  function "+" (L: UNSIGNED; R: NATURAL) return UNSIGNED;
  function "+" (L: NATURAL; R: UNSIGNED) return UNSIGNED;
  function "+" (L: INTEGER; R: SIGNED) return SIGNED;
  function "+" (L: SIGNED; R: INTEGER) return SIGNED;