V7.3-2_and_Higher

   The following additional functions are available on OpenVMS Alpha
   Version 7.3-2 and higher:

   a64l           clock_getres   clock_gettime    clock_settime
   endgrent       getgrent       getgrgid         getgrgid_r
   getgrnam       getgrnam_r     getpgid          getpgrp
   _getpwnam64    getpwnam_r     _getpwnam_r64    _getpwent64
   getpwuid       _getpwuid64    getpwuid_r       _getpwuid_r64
   getsid         l64a           nanosleep        poll
   pread          pwrite         rand_r           readv
   _readv64       seteuid        setgrent         setpgid
   setpgrp        setregid       setreuid         setsid
   sighold        sigignore      sigrelse         sigtimedwait
   sigwait        sigwaitinfo    snprintf         ttyname_r
   vsnprintf      __writev64     decc$set_child_default_dir