LCONG48 (man3p)
lcong48 — seed a uniformly distributed pseudo-random signed long integer generator
lcong48 — seed a uniformly distributed pseudo-random signed long integer generator
getwc — get a wide character from a stream
sem_getvalue — get the value of a semaphore
fabs, fabsf, fabsl — absolute value function
pthread_atfork — register fork handlers
pthread_attr_getschedpolicy, pthread_attr_setschedpolicy — get and set the schedpolicy attribute (REALTIME THREADS)
asctime, asctime_r — convert date and time to a string
drand48, erand48, jrand48, lcong48, lrand48, mrand48, nrand48, seed48, srand48 — generate uniformly distributed pseudo-random numbers
lio_listio — list directed I/O
tdelete, tfind, tsearch, twalk — manage a binary search tree