1 files changed, 7 insertions, 0 deletions
diff --git a/number.h b/number.h
index d0d2a10..07df60f 100644
--- a/number.h
+++ b/number.h
@@ -140,6 +140,13 @@ public:
     number &operator+=(const number &n);
 
     /**
+     * \brief Multiply a number with this number.
+     *
+     * \param n Number with multiply to this number.
+     */
+    number &operator*=(const number &n);
+
+    /**
      * \brief Shift the number n bits to the left.
      *
      * \param n Number of bits to shift.