-#define USEC_PER_SEC 1000000ULL
-#define USEC_PER_MSEC 1000ULL
-#define NSEC_PER_SEC 1000000000ULL
-#define NSEC_PER_MSEC 1000000ULL
-#define NSEC_PER_USEC 1000ULL
-
-#define USEC_PER_MINUTE (60ULL*USEC_PER_SEC)
-#define NSEC_PER_MINUTE (60ULL*NSEC_PER_SEC)
-#define USEC_PER_HOUR (60ULL*USEC_PER_MINUTE)
-#define NSEC_PER_HOUR (60ULL*NSEC_PER_MINUTE)
-#define USEC_PER_DAY (24ULL*USEC_PER_HOUR)
-#define NSEC_PER_DAY (24ULL*NSEC_PER_HOUR)
-#define USEC_PER_WEEK (7ULL*USEC_PER_DAY)
-#define NSEC_PER_WEEK (7ULL*NSEC_PER_DAY)
-#define USEC_PER_MONTH (2629800ULL*USEC_PER_SEC)
-#define NSEC_PER_MONTH (2629800ULL*NSEC_PER_SEC)
-#define USEC_PER_YEAR (31557600ULL*USEC_PER_SEC)
-#define NSEC_PER_YEAR (31557600ULL*NSEC_PER_SEC)
-
-#define FORMAT_TIMESTAMP_MAX (6+11+9+4+1)
-#define FORMAT_TIMESTAMP_PRETTY_MAX 256
+#define USEC_PER_SEC ((usec_t) 1000000ULL)
+#define USEC_PER_MSEC ((usec_t) 1000ULL)
+#define NSEC_PER_SEC ((nsec_t) 1000000000ULL)
+#define NSEC_PER_MSEC ((nsec_t) 1000000ULL)
+#define NSEC_PER_USEC ((nsec_t) 1000ULL)
+
+#define USEC_PER_MINUTE ((usec_t) (60ULL*USEC_PER_SEC))
+#define NSEC_PER_MINUTE ((nsec_t) (60ULL*NSEC_PER_SEC))
+#define USEC_PER_HOUR ((usec_t) (60ULL*USEC_PER_MINUTE))
+#define NSEC_PER_HOUR ((nsec_t) (60ULL*NSEC_PER_MINUTE))
+#define USEC_PER_DAY ((usec_t) (24ULL*USEC_PER_HOUR))
+#define NSEC_PER_DAY ((nsec_t) (24ULL*NSEC_PER_HOUR))
+#define USEC_PER_WEEK ((usec_t) (7ULL*USEC_PER_DAY))
+#define NSEC_PER_WEEK ((nsec_t) (7ULL*NSEC_PER_DAY))
+#define USEC_PER_MONTH ((usec_t) (2629800ULL*USEC_PER_SEC))
+#define NSEC_PER_MONTH ((nsec_t) (2629800ULL*NSEC_PER_SEC))
+#define USEC_PER_YEAR ((usec_t) (31557600ULL*USEC_PER_SEC))
+#define NSEC_PER_YEAR ((nsec_t) (31557600ULL*NSEC_PER_SEC))
+
+#define FORMAT_TIMESTAMP_MAX ((4*4+1)+11+9+4+1) /* weekdays can be unicode */
+#define FORMAT_TIMESTAMP_WIDTH 28 /* when outputting, assume this width */
+#define FORMAT_TIMESTAMP_RELATIVE_MAX 256