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