#include <sys/resource.h>
#include <stdlib.h>
-#include "config.h"
-#if defined(HAVE_SSTREAM)
-# include <sstream>
-#else
-# include <strstream>
-#endif
+#include <sstream>
#include <vector>
-using namespace std;
-
+#include "config.h"
#include "ginac.h"
+using namespace std;
using namespace GiNaC;
class timer {