From 3b8e10c66bfeb447e8b06b7296f748c405c8453d Mon Sep 17 00:00:00 2001
From: oetiker <oetiker@a5681a0c-68f1-0310-ab6d-d61299d08faa>
Date: Thu, 1 Dec 2011 15:27:24 +0000
Subject: [PATCH] rpn compare operators CAN return unknown ... (#293)

git-svn-id: svn://svn.oetiker.ch/rrdtool/trunk/program@2232 a5681a0c-68f1-0310-ab6d-d61299d08faa
---
 doc/rrdgraph_rpn.pod | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/doc/rrdgraph_rpn.pod b/doc/rrdgraph_rpn.pod
index 16f7610..5558c22 100644
--- a/doc/rrdgraph_rpn.pod
+++ b/doc/rrdgraph_rpn.pod
@@ -51,7 +51,8 @@ B<LT, LE, GT, GE, EQ, NE>
 
 Pop two elements from the stack, compare them for the selected condition
 and return 1 for true or 0 for false. Comparing an I<unknown> or an
-I<infinite> value will always result in 0 (false).
+I<infinite> value will result in I<unknown> returned ... which will also be
+treated as false by the B<IF> call.
 
 B<UN, ISINF>
 
-- 
2.11.0