/// <summary>
        /// Reads <c>long</c> from the stream.
        /// </summary>
        public unsafe long ReadLong()
        {
            if (blockRemaining > 8)
            {
                position       += 8;
                blockRemaining -= 8;
                return(BaseReader.ReadLong());
            }
            else
            {
                long value;

                ReadBytes((byte *)&value, 8);
                return(value);
            }
        }
        /// <summary>
        /// Reads <c>long</c> from the stream.
        /// </summary>
        public long ReadLong()
        {
            byte[] buffer = MoveInternal(8);
            long   value;

            if (buffer != null)
            {
                value = BitConverter.ToInt64(buffer, 0);
            }
            else
            {
                value = BaseReader.ReadLong();
            }
            CheckMoveReader();
            return(value);
        }