diff --git a/cnumber.hpp b/cnumber.hpp
index f8cd7d8..6c50a33 100644
--- a/cnumber.hpp
+++ b/cnumber.hpp
@@ -85,4 +85,6 @@ public:
     r = z.r;
     i = z.i;
   }
+  const bool operator==(const cnumber &z) const { return r == z.r && i == z.i; }
+  const bool operator!=(const cnumber &z) const { return r != z.r || i != z.i; }
 };