SEM_TIMEDWAIT (man3p)
sem_timedwait — lock a semaphore
sem_timedwait — lock a semaphore
getitimer, setitimer — get and set value of interval timer
mbsinit — determine conversion object status
posix_trace_attr_getclockres, posix_trace_attr_getcreatetime, posix_trace_attr_getgenversion, posix_trace_attr_getname, posix_trace_attr_setname — retrieve and set information about a trace stream (TRACING)
localtime, localtime_r — convert a time value to a broken-down local time
recvmsg — receive a message from a socket
feupdateenv — update floating-point environment
lround, lroundf, lroundl — round to nearest integer value
pwrite — write on a file
sigprocmask — examine and change blocked signals