+/**
+ Small wrapper around round().
+*/
+int wxRound(double x);
+
+/**
+ Returns true if both double values are identical. This is
+ only reliable if both values have been assigned the same
+ value.
+*/
+bool wxIsSameDouble(double x, double y);
+
+/**
+ Return true of @a x is exactly zero. This is only reliable
+ if it has been assigned 0.
+*/
+bool wxIsNullDouble(double x);
+