|
ualarm()
|
Standard Unix; removed from POSIX.1-2008
|
No |
No |
Yes |
Yes |
|
ultoa()
|
QNX 4
|
No |
Yes |
Yes |
Yes |
|
ulltoa()
|
Unix
|
No |
Yes |
Yes |
Yes |
|
umask()
|
POSIX 1003.1
|
No |
No |
Yes |
Yes |
|
umount()
|
QNX Neutrino
|
Yes |
No |
No |
Yes |
|
UNALIGNED_PUT16()
|
QNX Neutrino
|
No |
Yes |
Yes |
Yes |
|
UNALIGNED_PUT32()
|
QNX Neutrino
|
No |
Yes |
Yes |
Yes |
|
UNALIGNED_PUT64()
|
QNX Neutrino
|
No |
Yes |
Yes |
Yes |
|
UNALIGNED_RET16()
|
QNX Neutrino
|
No |
Yes |
Yes |
Yes |
|
UNALIGNED_RET32()
|
QNX Neutrino
|
No |
Yes |
Yes |
Yes |
|
UNALIGNED_RET64()
|
QNX Neutrino
|
No |
Yes |
Yes |
Yes |
|
uname()
|
POSIX 1003.1
|
No |
No |
Yes |
Yes |
|
ungetc()
|
ANSI
POSIX 1003.1
|
Yes |
No |
No |
Yes |
|
ungetwc()
|
ANSI
POSIX 1003.1
|
Yes |
No |
No |
Yes |
|
unlink()
|
POSIX 1003.1
|
Yes |
No |
Yes |
Yes |
|
unlockpt()
|
POSIX 1003.1
|
No |
No |
Yes |
Yes |
|
unsetenv()
|
POSIX 1003.1
|
No |
No |
Yes |
Yes |
|
usleep()
|
Standard Unix; removed from POSIX.1-2008
|
Yes |
No |
Yes |
Yes |
|
utime()
|
POSIX 1003.1
|
No |
No |
Yes |
Yes |
|
utimes()
|
POSIX 1003.1 XSI
|
No |
No |
Yes |
Yes |
|
utmpname()
|
Unix
|
Yes |
No |
Yes |
Yes |
|
utoa()
|
QNX 4
|
No |
Yes |
Yes |
Yes |