1 files changed, 1 insertions, 0 deletions
diff --git a/mpi.h b/mpi.h
index 1be758e..12079c5 100644
--- a/mpi.h
+++ b/mpi.h
@@ -48,6 +48,7 @@ public:
   void operator=(const Mpi &src);
   void operator=(long unsigned int);
   Mpi operator+(const Mpi &b) const;
+  Mpi operator+(const long unsigned int &b) const;
   Mpi operator^(const Mpi &b) const;
   Mpi operator*(const unsigned long int n) const;