/*****************************************************************************
- * RRDtool 1.4.2 Copyright by Tobi Oetiker, 1997-2009
+ * RRDtool 1.4.3 Copyright by Tobi Oetiker, 1997-2010
* This code is stolen from rateup (mrtg-2.x) by Dave Rand
*****************************************************************************
* diff calculate the difference between two very long integers available as