#ifdef _POSIX_SOURCE
extern void tzset(void);
+
+struct timespec {
+ time_t tv_sec;
+ long tv_nsec;
+};
+extern int nanosleep(const struct timespec *req, struct timespec *rem);
#endif
#ifdef __cplusplus
#ifdef _POSIX_SOURCE
extern char *tzname[2];
+extern long timezone;
+extern long altzone;
+extern int daylight;
#endif
#endif /* __TIME_H */