# POSIX refs
# IEEE Std 1003.1-2001
# http://pubs.opengroup.org/onlinepubs/009695399/functions/xsh_chap02_09.html#tag_02_09_01
# POSIX.1-2008
# http://pubs.opengroup.org/onlinepubs/9699919799/functions/V2_chap02.html#tag_15_09_01
#
asctime
# basename OK according to glibc documentation
catgets
crypt
ctime
dbm_clearerr
dbm_close
dbm_delete
dbm_error
dbm_fetch
dbm_firstkey
dbm_nextkey
dbm_open
dbm_store
# dirname OK according to glibc documentation
dlerror
drand48
ecvt
encrypt
endgrent
endpwent
endutxent
fcvt
ftw
gcvt
getchar_unlocked
getc_unlocked
getdate
getenv
getgrent
getgrgid
getgrnam
gethostbyaddr
gethostbyname
gethostent
getlogin
getnetbyaddr
getnetbyname
getnetent
getopt
getprotobyname
getprotobynumber
getprotoent
getpwent
getpwnam
getpwuid
getservbyname
getservbyport
getservent
getutxent
getutxid
getutxline
gmtime
hcreate
hdestroy
hsearch
inet_ntoa
l64a
lgamma
lgammaf
lgammal
localeconv
localtime
lrand48
mrand48
nftw
nl_langinfo
ptsname
putchar_unlocked
putc_unlocked
putenv
pututxline
rand
readdir
sctime
setenv
setgrent
setkey
setpwent
setutxent
strerror
strsignal
strtok
system
ttyname
unsetenv
wcstombs
wctomb
