struct tm* localtime_r(const time_t *timep, struct tm* result);
char* ctime_r(const time_t *timep, char* result);
struct tm* gmtime_r(const time_t *timep, struct tm* result);
char *strtok_r(char *str, const char *sep, char **last);
struct tm* localtime_r(const time_t *timep, struct tm* result);
char* ctime_r(const time_t *timep, char* result);
struct tm* gmtime_r(const time_t *timep, struct tm* result);
char *strtok_r(char *str, const char *sep, char **last);