PTHREAD_MUTEXATTR_SETPRIOCEILING (man3p)
pthread_mutexattr_setprioceiling — set the prioceiling attribute of the mutex attributes object (REALTIME THREADS)
pthread_mutexattr_setprioceiling — set the prioceiling attribute of the mutex attributes object (REALTIME THREADS)
atanl — arc tangent function
catanl — complex arc tangent functions
posix_trace_flush — trace stream flush from a process (TRACING)
abs — return an integer absolute value
cfsetospeed — set output baud rate
mkfifo, mkfifoat — make a FIFO special file
wcstod, wcstof, wcstold — convert a wide-character string to a double-precision number
tcsetpgrp — set the foreground process group ID
mq_close — close a message queue (REALTIME)