added wxLongLong::ToDouble()

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@35323 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/longlong.h

@@ -164,6 +164,9 @@ public:
         return (long)m_ll;
     }
 
+        // convert to double
+    double ToDouble() const { return m_ll; }
+
     // don't provide implicit conversion to wxLongLong_t or we will have an
     // ambiguity for all arithmetic operations
     //operator wxLongLong_t() const { return m_ll; }
@@ -590,6 +593,9 @@ public:
         return (long)m_lo;
     }
 
+        // convert to double
+    double ToDouble() const;
+
     // operations
         // addition
     wxLongLongWx operator+(const wxLongLongWx& ll) const;