#include <iostream>
#include "fail.h"
-#include "print.h"
#include "archive.h"
#include "utils.h"
namespace GiNaC {
-GINAC_IMPLEMENT_REGISTERED_CLASS(fail, basic)
+GINAC_IMPLEMENT_REGISTERED_CLASS_OPT(fail, basic,
+ print_func<print_context>(&fail::do_print).
+ print_func<print_tree>(&basic::do_print_tree))
//////////
// default constructor