so that the code works even with ancient cpp. Portability problem
with GCC 2.7.2.1 reported by Thomas M.Ott.
seconds. */
# if HAVE_LONG_LONG
typedef long long int xtime_t;
-# define XTIME_PRECISION 1000000000LL
+# define XTIME_PRECISION 1000000000
# else
# include <limits.h>
typedef long int xtime_t;
# if LONG_MAX >> 31 >> 31 == 0
-# define XTIME_PRECISION 1L
+# define XTIME_PRECISION 1
# else
-# define XTIME_PRECISION 1000000000L
+# define XTIME_PRECISION 1000000000
# endif
# endif