*/
-#include <assert.h>
+#include "duration.hh"
#include "misc.hh"
#include "lily-proto.hh"
-#include "string.hh"
-#include "moment.hh"
-#include "duration.hh"
-#include "ly-smobs.icc"
+#include "ly-smobs.icc"
int
Duration::compare (Duration const &left, Duration const &right)