CACOSL (man3p)
cacosl — complex arc cosine functions
cacosl — complex arc cosine functions
popen — initiate pipe streams to or from a process
difftime — compute the difference between two calendar time values
ioctl — control a STREAMS device (STREAMS)
ntohl, ntohs — convert values between host and network byte order
sigwaitinfo — wait for queued signals
getsockopt — get the socket options
scalbln, scalblnf, scalblnl, scalbn, scalbnf, scalbnl — compute exponent using FLT_RADIX
logb, logbf, logbl — radix-independent exponent
syslog — log a message