/*****************************************************************************
- * RRDtool 1.2.18 Copyright by Tobi Oetiker, 1997-2006
+ * RRDtool 1.2.21 Copyright by Tobi Oetiker, 1997-2007
*****************************************************************************
* rrd_hw.h : Support for Holt-Winters Smoothing/ Aberrant Behavior Detection
*****************************************************************************/