int thrd_create(thrd_t *t, thrd_start_t start_routine, void *arg);
int thrd_join(thrd_t);
int thrd_yield(void);
thrd_t thrd_current(void);
int thrd_create(thrd_t *t, thrd_start_t start_routine, void *arg);
int thrd_join(thrd_t);
int thrd_yield(void);
thrd_t thrd_current(void);