数据运算函数的实例 整数与逻辑位的加法; function+(a:integer, b: bit)return integer is begin if (b=1)then return a+1; ese return a end if: end数据运算函数的实例 整数与逻辑位的加法； function "+" (a:integer,b:bit) return integer is begin if (b = '1') then return a+1; else return a; end if; end "+";