From b53ee994c98cfabd8ff6ff67bffb5cc79cd79d7a Mon Sep 17 00:00:00 2001
From: Celtic Minstrel <celtic.minstrel.ca@some.place>
Date: Thu, 10 Mar 2016 00:45:21 -0500
Subject: [PATCH] Formula engine: now exponentiation returns null on NaN

---
 src/variant.cpp | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/variant.cpp b/src/variant.cpp
index b55ca565d453..37542019d56c 100644
--- a/src/variant.cpp
+++ b/src/variant.cpp
@@ -750,6 +750,8 @@ variant variant::operator^(const variant& v) const
 	if( type_ == TYPE_DECIMAL || v.type_ == TYPE_DECIMAL ) {
 
 		double res = pow( as_decimal()/1000.0 , v.as_decimal()/1000.0 );
+		
+		if(res != res) return variant();
 
 		return variant(res, DECIMAL_VARIANT);
 	}