1 files changed, 11 insertions, 0 deletions
diff --git a/number.h b/number.h
index f68299d..c920ddc 100644
--- a/number.h
+++ b/number.h
@@ -34,6 +34,12 @@ public:
     std::uint32_t to_uint32() const;
 
     /**
+     * \brief Return true if this number is not equal to 0. Otherwise, return
+     * false.
+     */
+    explicit operator bool() const;
+
+    /**
      * \brief Return the result of the addition of a number and this number.
      *
      * \param n The number to add to this number.
@@ -105,6 +111,11 @@ public:
     bool operator!=(const number &n) const;
 
     /**
+     * \brief Tells whether this number evaluates to false.
+     */
+    bool operator!() const;
+
+    /**
      * \brief Add a number to this number.
      *
      * \param n Number to add to this number.