--- a/src/simulator/high-precision-cairo.h	Wed Aug 18 13:58:50 2010 -0700
+++ b/src/simulator/high-precision-cairo.h	Wed Aug 18 15:06:26 2010 -0700
@@ -162,6 +162,17 @@
 }
 #undef HPCAIRO_MAX_64
 
+std::ostream &operator << (std::ostream &os, const HighPrecision &hp)
+{
+  // XXX stubbed out
+  return os;
+}
+std::istream &operator >> (std::istream &is, HighPrecision &hp)
+{
+  // XXX stubbed out
+  return is;
+}
+
 } // namespace ns3
 
 #endif /* HIGH_PRECISION_CAIRO_H */