-the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
-Boston, MA 02111-1307, USA. */
+the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+Boston, MA 02110-1301, USA. */
+
+#ifndef EMACS_ATIMER_H
+#define EMACS_ATIMER_H
+
+/* Declare the prototype for a general external function. */
+#if defined (PROTOTYPES) || defined (WINDOWSNT)
+#define P_(proto) proto
+#else
+#define P_(proto) ()
+#endif
+
+#include "systime.h" /* for EMACS_TIME */