这段函数最终的result返回的是什么，怎么没看懂呢
FUNCTION my_conv_integer (SIGNAL vector: STD_LOGIC_VECTOR)RETURN INTEGER IS
VARIABLE result: INTEGER RANGE 0 TO 2**vector'LENGTH-1;
BEGIN
result := 0;
FOR i IN (vector'HIGH-1) DOWNTO (vector'LOW) LOOP
result:=result*2;
IF(vector(i)='1') THEN result:=result+1;
END IF;
END LOOP;
RETURN result;
END my_conv_integer; 这段函数最终的result返回的是什么，怎么没看懂呢
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