virtual long eval(long x);
};
+/*!
+ * \brief base class for evaluating a function: void -> void
+ *
+ * This class is designed to be subclassed in Python or C++
+ * and is callable from both places. It uses SWIG's
+ * "director" feature to implement the magic.
+ * It's slow. Don't use it in a performance critical path.
+ */
+class gr_feval
+{
+public:
+ gr_feval() {}
+ virtual ~gr_feval();
+
+ /*!
+ * \brief override this to define the function
+ */
+ virtual void eval();
+};
+
/*!
* \brief trivial examples / test cases showing C++ calling Python code
*/
double gr_feval_dd_example(gr_feval_dd *f, double x);
gr_complex gr_feval_cc_example(gr_feval_cc *f, gr_complex x);
long gr_feval_ll_example(gr_feval_ll *f, long x);
-
+void gr_feval_example(gr_feval *f);
#endif /* INCLUDED_GR_FEVAL_H */