Index: obj_hash.h
===================================================================
--- obj_hash.h	(revision 14751)
+++ obj_hash.h	(revision 14752)
@@ -89,6 +89,16 @@
 /* compare two fields and return 0 if they are equal */
 #define pcb_field_neq(s1, s2, f) ((s1)->f != (s2)->f)
 
+/* retruns if two sets of tr;x;y mismatches */
+static inline pcb_bool pcb_neq_tr_coords(const pcb_host_trans_t *tr1, pcb_coord_t x1, pcb_coord_t y1, const pcb_host_trans_t *tr2, pcb_coord_t x2, pcb_coord_t y2)
+{
+	pcb_hash_tr_coords(tr1, &x1, &y1, x1, y1);
+	pcb_hash_tr_coords(tr2, &x2, &y2, x2, y2);
+	if (x1 != x2) return pcb_true;
+	if (y1 != y2) return pcb_true;
+	return pcb_false;
+}
+
 #define pcb_element_offs(e,ef, s,sf) ((e == NULL) ? (s)->sf : ((s)->sf) - ((e)->ef))
 #define pcb_element_neq_offsx(e1, x1, e2, x2, f) (pcb_element_offs(e1, MarkX, x1, f) != pcb_element_offs(e2, MarkX, x2, f))
 #define pcb_element_neq_offsy(e1, y1, e2, y2, f) (pcb_element_offs(e1, MarkY, y1, f) != pcb_element_offs(e2, MarkY, y2, f))