--- libreoffice-5.1.1.1/xmloff/source/draw/ximp3dscene.cxx.orig	2016-03-16 18:40:03.810865813 +0100
+++ libreoffice-5.1.1.1/xmloff/source/draw/ximp3dscene.cxx	2016-03-16 18:40:54.423826654 +0100
@@ -66,7 +66,7 @@
             {
                 ::basegfx::B3DVector aVal;
                 SvXMLUnitConverter::convertB3DVector(aVal, sValue);
-                if (!isnan(aVal.getX()) && !isnan(aVal.getY()) && !isnan(aVal.getZ()))
+                if (!std::isnan(aVal.getX()) && !std::isnan(aVal.getY()) && !std::isnan(aVal.getZ()))
                 {
                     maDirection = aVal;
                 }