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diff --git a/src/2geom/ord.h b/src/2geom/ord.h
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+/** @file
+ * @brief Comparator template
+ *//*
+ * Authors:
+ *      ? <?@?.?>
+ * 
+ * Copyright ?-?  authors
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ */
+
+#ifndef LIB2GEOM_SEEN_ORD_H
+#define LIB2GEOM_SEEN_ORD_H
+
+namespace {
+
+enum Cmp {
+  LESS_THAN=-1,
+  GREATER_THAN=1,
+  EQUAL_TO=0
+};
+
+static inline Cmp operator-(Cmp x) {
+  switch(x) {
+  case LESS_THAN:
+    return GREATER_THAN;
+  case GREATER_THAN:
+    return LESS_THAN;
+  case EQUAL_TO:
+    return EQUAL_TO;
+  }
+}
+
+template <typename T1, typename T2>
+inline Cmp cmp(T1 const &a, T2 const &b) {
+  if ( a < b ) {
+    return LESS_THAN;
+  } else if ( b < a ) {
+    return GREATER_THAN;
+  } else {
+    return EQUAL_TO;
+  }
+}
+
+}
+
+#endif
+
+/*
+  Local Variables:
+  mode:c++
+  c-file-style:"stroustrup"
+  c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
+  indent-tabs-mode:nil
+  fill-column:99
+  End:
+*/
+// vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:fileencoding=utf-8:textwidth=99 :