STRTOLD (man3p)
strtold — convert a string to a double-precision number
strtold — convert a string to a double-precision number
sem_unlink — remove a named semaphore
endutxent, getutxent, getutxid, getutxline, pututxline, setutxent — user accounting database functions
strcoll, strcoll_l — string comparison using collating information
pthread_barrierattr_destroy, pthread_barrierattr_init — destroy and initialize the barrier attributes object
_Exit, _exit — terminate a process
getsubopt — parse suboption arguments from a string
fstatat, lstat, stat — get file status
remquo, remquof, remquol — remainder functions
iswpunct, iswpunct_l — test for a punctuation wide-character code