iTextSharp.text.pdf.RandomAccessFileOrArray.ReadLong C# (CSharp) Метод

        public long ReadLong()
        {
            return ((long)(ReadInt()) << 32) + (ReadInt() & 0xFFFFFFFFL);
        }

 private long ReadLong(RandomAccessFileOrArray stream)
 {
     if (isBigEndian) {
         return stream.ReadLong();
     } else {
         return stream.ReadLongLE();
     }
 }