Add forward decl

digraphs · Sep 4, 2024 · fda50e8 · fda50e8
1 parent 9662219
commit fda50e8
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Showing 2 changed files with 6 additions and 0 deletions.
diff --git a/gap/planar.gi b/gap/planar.gi
@@ -82,6 +82,9 @@ function(D)
   local v, e;
   v := DigraphNrVertices(D);
   e := DigraphNrAdjacenciesWithoutLoops(D);
+  if HasIsPlanarDigraph(D) then
+    return IsPlanarDigraph(D);
+  fi;
   if v < 5 or e < 9 then
     return true;
   elif (IsConnectedDigraph(D) and e > 3 * v - 6)

diff --git a/src/planar.c b/src/planar.c
@@ -49,6 +49,9 @@
 #pragma GCC diagnostic pop
 #endif
 
+// Forward declaration of the main function in this file.
+Obj trivial_planarity_output(Int V, bool krtwsk);
+
 // Forward declaration of the main function in this file.
 Obj boyers_planarity_check(Obj digraph, int flags, bool krtwsk);