readDouble() 보호된 메소드

readDouble reads the floating point value from the bytes stream and properly orders the bytes depending on the system architecture.
protected readDouble ( ) : float
리턴 float The floating point value of the next 8 bytes
 /**
  * reaad double
  * @return float
  */
 public function readDouble()
 {
     return parent::readDouble();
 }