compiles and most output facets are right; needs debugging

[moebius2.git] / mgraph.c

diff --git a/mgraph.c b/mgraph.c
index 7f5f3bd2c06facf29d9b6ec2af6f7663f8aee4cd..46c7533827b1445c2498773106301e2898a94f47 100644 (file)
--- a/mgraph.c
+++ b/mgraph.c
@@ -39,3 +39,10 @@ int edge_reverse(int v1, int e) {
 //      v1,e,eprime, EDGE_END2(v1,e), x2,flip);
   return eprime;
 }
 //      v1,e,eprime, EDGE_END2(v1,e), x2,flip);
   return eprime;
 }

+
+int vertices_span_join_p(int v0, int v1) {
+  int v0x= v0 & XMASK;
+  int v1x= v1 & XMASK;
+  int diff= v0x-v1x;
+  return diff < -2 || diff > 2;
+}