diff --git a/src/db/db/dbLocalOperation.cc b/src/db/db/dbLocalOperation.cc
index 20a77e6f4..b0e340c60 100644
--- a/src/db/db/dbLocalOperation.cc
+++ b/src/db/db/dbLocalOperation.cc
@@ -115,6 +115,86 @@ BoolAndOrNotLocalOperation::compute_local (db::Layout *layout, const shape_inter
   }
 }
 
+// ---------------------------------------------------------------------------------------------
+//  TwoBoolAndNotLocalOperation implementation
+
+TwoBoolAndNotLocalOperation::TwoBoolAndNotLocalOperation ()
+  : db::local_operation<db::PolygonRef, db::PolygonRef, db::PolygonRef> ()
+{
+  //  .. nothing yet ..
+}
+
+void
+TwoBoolAndNotLocalOperation::compute_local (db::Layout *layout, const shape_interactions<db::PolygonRef, db::PolygonRef> &interactions, std::vector<std::unordered_set<db::PolygonRef> > &results, size_t max_vertex_count, double area_ratio) const
+{
+  tl_assert (results.size () == 2);
+
+  db::EdgeProcessor ep;
+
+  std::unordered_set<db::PolygonRef> &result0 = results [0];
+  std::unordered_set<db::PolygonRef> &result1 = results [1];
+
+  size_t p1 = 0, p2 = 1;
+
+  std::set<db::PolygonRef> others;
+  for (db::shape_interactions<db::PolygonRef, db::PolygonRef>::iterator i = interactions.begin (); i != interactions.end (); ++i) {
+    for (db::shape_interactions<db::PolygonRef, db::PolygonRef>::iterator2 j = i->second.begin (); j != i->second.end (); ++j) {
+      others.insert (interactions.intruder_shape (*j).second);
+    }
+  }
+
+  for (db::shape_interactions<db::PolygonRef, db::PolygonRef>::iterator i = interactions.begin (); i != interactions.end (); ++i) {
+
+    const db::PolygonRef &subject = interactions.subject_shape (i->first);
+    if (others.find (subject) != others.end ()) {
+      result0.insert (subject);
+    } else if (i->second.empty ()) {
+      //  shortcut (not: keep, and: drop)
+      result1.insert (subject);
+    } else {
+      for (db::PolygonRef::polygon_edge_iterator e = subject.begin_edge (); ! e.at_end(); ++e) {
+        ep.insert (*e, p1);
+      }
+      p1 += 2;
+    }
+
+  }
+
+  if (! others.empty () || p1 > 0) {
+
+    for (std::set<db::PolygonRef>::const_iterator o = others.begin (); o != others.end (); ++o) {
+      for (db::PolygonRef::polygon_edge_iterator e = o->begin_edge (); ! e.at_end(); ++e) {
+        ep.insert (*e, p2);
+      }
+      p2 += 2;
+    }
+
+    db::BooleanOp op0 (db::BooleanOp::And);
+    db::PolygonRefGenerator pr0 (layout, result0);
+    db::PolygonSplitter splitter0 (pr0, area_ratio, max_vertex_count);
+    db::PolygonGenerator pg0 (splitter0, true, true);
+
+    db::BooleanOp op1 (db::BooleanOp::ANotB);
+    db::PolygonRefGenerator pr1 (layout, result1);
+    db::PolygonSplitter splitter1 (pr1, area_ratio, max_vertex_count);
+    db::PolygonGenerator pg1 (splitter1, true, true);
+
+    ep.set_base_verbosity (50);
+
+    std::vector<std::pair<db::EdgeSink *, db::EdgeEvaluatorBase *> > procs;
+    procs.push_back (std::make_pair (&pg0, &op0));
+    procs.push_back (std::make_pair (&pg1, &op1));
+    ep.process (procs);
+
+  }
+
+}
+
+std::string TwoBoolAndNotLocalOperation::description () const
+{
+  return tl::to_string (tr ("ANDNOT operation"));
+}
+
 // ---------------------------------------------------------------------------------------------
 
 SelfOverlapMergeLocalOperation::SelfOverlapMergeLocalOperation (unsigned int wrap_count)
diff --git a/src/db/db/dbLocalOperation.h b/src/db/db/dbLocalOperation.h
index 5cb21d691..dc577781a 100644
--- a/src/db/db/dbLocalOperation.h
+++ b/src/db/db/dbLocalOperation.h
@@ -126,6 +126,22 @@ private:
   bool m_is_and;
 };
 
+/**
+ *  @brief Implements a boolean AND plus NOT operation
+ *
+ *  This processor delivers two outputs: the first one having the AND result, the second
+ *  one having the NOT result.
+ */
+class DB_PUBLIC TwoBoolAndNotLocalOperation
+  : public local_operation<db::PolygonRef, db::PolygonRef, db::PolygonRef>
+{
+public:
+  TwoBoolAndNotLocalOperation ();
+
+  virtual void compute_local (db::Layout *layout, const shape_interactions<db::PolygonRef, db::PolygonRef> &interactions, std::vector<std::unordered_set<db::PolygonRef> > &result, size_t max_vertex_count, double area_ratio) const;
+  virtual std::string description () const;
+};
+
 /**
  *  @brief Implements a merge operation with an overlap count
  *  With a given wrap_count, the result will only contains shapes where
diff --git a/src/db/unit_tests/dbHierProcessorTests.cc b/src/db/unit_tests/dbHierProcessorTests.cc
index 5672f0522..05ac5b94f 100644
--- a/src/db/unit_tests/dbHierProcessorTests.cc
+++ b/src/db/unit_tests/dbHierProcessorTests.cc
@@ -84,90 +84,6 @@ private:
   db::Coord m_dist;
 };
 
-/**
- *  @brief A new processor class providing two outputs for two inputs: one for AND and one for NOT
- */
-class BoolAndPlusNotLocalOperation
-  : public db::local_operation<db::PolygonRef, db::PolygonRef, db::PolygonRef>
-{
-public:
-  BoolAndPlusNotLocalOperation ()
-    : db::local_operation<db::PolygonRef, db::PolygonRef, db::PolygonRef> ()
-  {
-    //  .. nothing yet ..
-  }
-
-  virtual std::string description () const
-  {
-    return std::string ();
-  }
-
-  void compute_local (db::Layout *layout, const db::shape_interactions<db::PolygonRef, db::PolygonRef> &interactions, std::vector<std::unordered_set<db::PolygonRef> > &results, size_t max_vertex_count, double area_ratio) const
-  {
-    tl_assert (results.size () == 2);
-
-    db::EdgeProcessor ep;
-
-    std::unordered_set<db::PolygonRef> &result0 = results [0];
-    std::unordered_set<db::PolygonRef> &result1 = results [1];
-
-    size_t p1 = 0, p2 = 1;
-
-    std::set<db::PolygonRef> others;
-    for (db::shape_interactions<db::PolygonRef, db::PolygonRef>::iterator i = interactions.begin (); i != interactions.end (); ++i) {
-      for (db::shape_interactions<db::PolygonRef, db::PolygonRef>::iterator2 j = i->second.begin (); j != i->second.end (); ++j) {
-        others.insert (interactions.intruder_shape (*j).second);
-      }
-    }
-
-    for (db::shape_interactions<db::PolygonRef, db::PolygonRef>::iterator i = interactions.begin (); i != interactions.end (); ++i) {
-
-      const db::PolygonRef &subject = interactions.subject_shape (i->first);
-      if (others.find (subject) != others.end ()) {
-        result0.insert (subject);
-      } else if (i->second.empty ()) {
-        //  shortcut (not: keep, and: drop)
-        result1.insert (subject);
-      } else {
-        for (db::PolygonRef::polygon_edge_iterator e = subject.begin_edge (); ! e.at_end(); ++e) {
-          ep.insert (*e, p1);
-        }
-        p1 += 2;
-      }
-
-    }
-
-    if (! others.empty () || p1 > 0) {
-
-      for (std::set<db::PolygonRef>::const_iterator o = others.begin (); o != others.end (); ++o) {
-        for (db::PolygonRef::polygon_edge_iterator e = o->begin_edge (); ! e.at_end(); ++e) {
-          ep.insert (*e, p2);
-        }
-        p2 += 2;
-      }
-
-      db::BooleanOp op0 (db::BooleanOp::And);
-      db::PolygonRefGenerator pr0 (layout, result0);
-      db::PolygonSplitter splitter0 (pr0, area_ratio, max_vertex_count);
-      db::PolygonGenerator pg0 (splitter0, true, true);
-
-      db::BooleanOp op1 (db::BooleanOp::ANotB);
-      db::PolygonRefGenerator pr1 (layout, result1);
-      db::PolygonSplitter splitter1 (pr1, area_ratio, max_vertex_count);
-      db::PolygonGenerator pg1 (splitter1, true, true);
-
-      ep.set_base_verbosity (50);
-
-      std::vector<std::pair<db::EdgeSink *, db::EdgeEvaluatorBase *> > procs;
-      procs.push_back (std::make_pair (&pg0, &op0));
-      procs.push_back (std::make_pair (&pg1, &op1));
-      ep.process (procs);
-
-    }
-
-  }
-};
-
 /**
  *  @brief A new processor class which and/nots with a sized version of the intruder
  */
@@ -318,7 +234,7 @@ static void run_test_bool_gen (tl::TestBase *_this, const char *file, TestMode m
   db::SelfOverlapMergeLocalOperation self_intersect_op (2);
   BoolAndOrNotWithSizedLocalOperation sized_bool_op (mode == TMAnd || mode == TMAndSwapped, dist);
   SelfOverlapWithSizedLocalOperation sized_self_intersect_op (2, dist);
-  BoolAndPlusNotLocalOperation andnot;
+  db::TwoBoolAndNotLocalOperation andnot;
 
   if (mode == TMAndNot) {
     lop = &andnot;