MBSRTOWCS (man3p)
mbsnrtowcs, mbsrtowcs — convert a character string to a wide-character string (restartable)
mbsnrtowcs, mbsrtowcs — convert a character string to a wide-character string (restartable)
getdate — convert user format date and time
htonl, htons, ntohl, ntohs — convert values between host and network byte order
pthread_attr_getstack, pthread_attr_setstack — get and set stack attributes
wcstold — convert a wide-character string to a double-precision number
iswprint, iswprint_l — test for a printable wide-character code
sigpending — examine pending signals
fsetpos — set current file position
aio_fsync — asynchronous file synchronization
fputs — put a string on a stream