POSIX_TRACE_EVENT (man3p)
posix_trace_event, posix_trace_eventid_open — trace functions for instrumenting application code (TRACING)
posix_trace_event, posix_trace_eventid_open — trace functions for instrumenting application code (TRACING)
getpwent — get user database entry
insque, remque — insert or remove an element in a queue
pthread_mutexattr_init — initialize the mutex attributes object
lrint, lrintf, lrintl — round to nearest integer value using current rounding direction
wcsstr — find a wide-character substring
ccos, ccosf, ccosl — complex cosine functions
hcreate, hdestroy, hsearch — manage hash search table
msgsnd — XSI message send operation
posix_spawnattr_destroy, posix_spawnattr_init — destroy and initialize spawn attributes object (ADVANCED REALTIME)