Index: branches/eam_branches/ipp-20140402/Ohana/src/tools/src/medianfilter.c
===================================================================
--- branches/eam_branches/ipp-20140402/Ohana/src/tools/src/medianfilter.c	(revision 36641)
+++ branches/eam_branches/ipp-20140402/Ohana/src/tools/src/medianfilter.c	(revision 36673)
@@ -114,5 +114,5 @@
       if (debug) fprintf (stderr, "\n");
       if (Nvalid == 0) {
-	*O = 0.0;
+	*O = NAN;
 	if (debug) {
 	    fprintf (stderr, "Nvalid is 0\n");