add interpatch_ghost_zone_on_edge()

git-svn-id: http://svn.einsteintoolkit.org/cactus/EinsteinAnalysis/AHFinderDirect/trunk@160 f88db872-0e4f-0410-b76b-b9085cfa78c5

1 files changed, 10 insertions, 1 deletions

diff --git a/src/patch/patch.hh b/src/patch/patch.hh
index c89fd78..d4b28ac 100644
--- a/src/patch/patch.hh
+++ b/src/patch/patch.hh
@@ -277,7 +277,16 @@ public:
 				  : (e.is_rho() ? max_rho_ghost_zone()
 						: max_sigma_ghost_zone());
 		}
-	
+	// get *interpatch* ghost zone on specified edge
+	// ... verifies that ghost zone is indeed interpatch
+	interpatch_ghost_zone& interpatch_ghost_zone_on_edge
+		(const patch_edge &e)
+		const
+		{
+		ghost_zone &g = ghost_zone_on_edge(e);
+		assert(g.is_interpatch());
+		return static_cast<interpatch_ghost_zone &>(g);
+		}
 
 
 	//