diff --git a/doc/rrdgraph_rpn.txt b/doc/rrdgraph_rpn.txt
index b1e92f85950bf7c58c1611760a6afc837f82a2d7..ae5cfdcb386dcf52b20093d6db7578e21580d540 100644 (file)
--- a/doc/rrdgraph_rpn.txt
+++ b/doc/rrdgraph_rpn.txt
Pop two elements from the stack, compare them for the selected
condition and return 1 for true or 0 for false. Comparing an
- _\bu_\bn_\bk_\bn_\bo_\bw_\bn or an _\bi_\bn_\bf_\bi_\bn_\bi_\bt_\be value will always result in 0 (false).
+ _\bu_\bn_\bk_\bn_\bo_\bw_\bn or an _\bi_\bn_\bf_\bi_\bn_\bi_\bt_\be value will result in _\bu_\bn_\bk_\bn_\bo_\bw_\bn returned ...
+ which will also be treated as false by the I\bIF\bF call.
U\bUN\bN,\b, I\bIS\bSI\bIN\bNF\bF
Example: "VDEF:stdev=mydata,STDEV"
LAST, FIRST
- Return the last/first value including its time. The time for FIRST
- is actually the start of the corresponding interval, whereas LAST
- returns the end of the corresponding interval.
+ Return the last/first non-nan or infinite value for the selected
+ data stream, including its timestamp.
Example: "VDEF:first=mydata,FIRST"
-1.4.2 2009-10-14 RRDGRAPH_RPN(1)
+1.4.8 2013-05-23 RRDGRAPH_RPN(1)