- along with this program; if not, write to the Free Software Foundation,
- Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
-
-#if ! defined NANOSLEEP_H
-# define NANOSLEEP_H
-
-/* You must include config.h before including this file. */
-
-# include <sys/types.h>
-# if TIME_WITH_SYS_TIME
-# include <sys/time.h>
-# include <time.h>
-# else
-# if HAVE_SYS_TIME_H
-# include <sys/time.h>
-# else
-# include <time.h>
-# endif
-# endif
-
-# if ! HAVE_STRUCT_TIMESPEC
-/* Some systems don't define this struct, e.g., AIX 4.1, Ultrix 4.3. */
-struct timespec
+ along with this program. If not, see <http://www.gnu.org/licenses/>. */
+
+#if ! defined TIMESPEC_H
+# define TIMESPEC_H
+
+# include <time.h>
+
+/* Return negative, zero, positive if A < B, A == B, A > B, respectively.
+ Assume the nanosecond components are in range, or close to it. */
+static inline int
+timespec_cmp (struct timespec a, struct timespec b)