Index: /issm/trunk-jpl/src/m/classes/groundingline.m
===================================================================
--- /issm/trunk-jpl/src/m/classes/groundingline.m	(revision 12148)
+++ /issm/trunk-jpl/src/m/classes/groundingline.m	(revision 12149)
@@ -37,5 +37,5 @@
 				end
 				pos=find(md.mask.vertexongroundedice); 
-				if any(md.geometry.bed(pos)-md.geometry.bathymetry(pos)),
+				if any(abs(md.geometry.bed(pos)-md.geometry.bathymetry(pos))>10^-10),
 					checkmessage(['bathymetry not equal to bed on grounded ice !']);
 				end