public Int64sRef Next(int count){Debug.Assert(count > 0);if (ord == valueCount){throw new System.IO.EndOfStreamException();}if (off == blockSize){Refill();}count = Math.Min(count, blockSize - off);count = (int)Math.Min(count, valueCount - ord);valuesRef.Offset = off;valuesRef.Length = count;off += count;ord += count;return valuesRef;}