fabs()
|
ANSI
POSIX 1003.1
|
No |
No |
No |
Yes |
fabsf()
|
ANSI
POSIX 1003.1
|
No |
No |
No |
Yes |
fcfgopen()
|
QNX Neutrino
|
Yes |
No |
Yes |
Yes |
fchdir()
|
POSIX 1003.1
|
No |
No |
Yes |
Yes |
fchmod()
|
POSIX 1003.1
|
No |
No |
Yes |
Yes |
fchown()
|
POSIX 1003.1
|
No |
No |
Yes |
Yes |
fclose()
|
ANSI
POSIX 1003.1
|
Yes |
No |
No |
Yes |
fcloseall()
|
QNX 4
|
Yes |
No |
No |
Yes |
fcntl()
|
POSIX 1003.1
|
Read the Caveats
|
No |
Yes |
Yes |
fdatasync()
|
POSIX 1003.1 SIO
|
Yes |
No |
Yes |
Yes |
fdistrusted()
|
QNX Neutrino
|
No |
No |
Yes |
Yes |
fdopen()
|
POSIX 1003.1
|
No |
No |
No |
Yes |
feof()
|
ANSI
POSIX 1003.1
|
No |
No |
No |
Yes |
ferror()
|
ANSI
POSIX 1003.1
|
No |
No |
No |
Yes |
fflush()
|
ANSI
POSIX 1003.1
|
Yes |
No |
No |
Yes |
ffs()
|
POSIX 1003.1 XSI
|
No |
No |
Yes |
Yes |
fgetc()
|
ANSI
POSIX 1003.1
|
Yes |
No |
No |
Yes |
fgetchar()
|
QNX 4
|
Yes |
No |
No |
Yes |
fgetpos()
|
ANSI
POSIX 1003.1
|
Yes |
No |
No |
Yes |
fgets()
|
ANSI
POSIX 1003.1
|
Yes |
No |
No |
Yes |
fgetspent()
|
Unix
|
Yes |
No |
No |
No |
fgetwc()
|
ANSI
POSIX 1003.1
|
Yes |
No |
No |
Yes |
fgetws()
|
ANSI
POSIX 1003.1
|
Yes |
No |
No |
Yes |
fileno()
|
POSIX 1003.1
|
No |
No |
Yes |
Yes |
flink()
|
Unix
|
No |
No |
Yes |
Yes |
flock()
|
Unix
|
No |
No |
Yes |
Yes |
flockfile()
|
POSIX 1003.1
|
No |
No |
No |
Yes |
floor()
|
ANSI
POSIX 1003.1
|
No |
No |
No |
Yes |
floorf()
|
ANSI
POSIX 1003.1
|
No |
No |
No |
Yes |
flushall()
|
QNX 4
|
Yes |
No |
No |
Yes |
fmod()
|
ANSI
POSIX 1003.1
|
No |
No |
No |
Yes |
fmodf()
|
ANSI
POSIX 1003.1
|
No |
No |
No |
Yes |
fmodl()
|
ANSI
POSIX 1003.1
|
No |
No |
No |
Yes |
fnmatch()
|
POSIX 1003.1
|
No |
No |
Yes |
Yes |
fopen()
|
ANSI
POSIX 1003.1
|
Yes |
No |
No |
Yes |
fopen64()
|
Large-file support
|
Yes |
No |
No |
Yes |
fork()
|
POSIX 1003.1
|
No |
No |
Yes |
Read the Caveats |
forkpty()
|
Unix
|
Yes |
No |
Yes |
Yes |
fp_exception_mask()
|
QNX Neutrino
|
No |
No |
No |
Yes |
fp_exception_value()
|
QNX Neutrino
|
No |
No |
No |
Yes |
fp_precision()
|
QNX Neutrino
|
No |
No |
No |
Yes |
fp_rounding()
|
QNX Neutrino
|
No |
No |
No |
Yes |
forksafe_mutex_destroy()
|
QNX Neutrino
|
No |
No |
Yes |
Yes |
forksafe_mutex_init()
|
QNX Neutrino
|
No |
No |
Yes |
Yes |
forksafe_mutex_lock()
|
QNX Neutrino
|
No |
No |
No |
Yes |
forksafe_mutex_trylock()
|
QNX Neutrino
|
No |
No |
Yes |
Yes |
forksafe_mutex_unlock()
|
QNX Neutrino
|
No |
No |
No |
Yes |
fpathconf()
|
POSIX 1003.1
|
No |
No |
Yes |
Yes |
fprintf()
|
ANSI
POSIX 1003.1
|
Yes |
No |
No |
Yes |
fputc()
|
ANSI
POSIX 1003.1
|
Yes |
No |
No |
Yes |
fputchar()
|
QNX 4
|
Yes |
No |
No |
Yes |
fputs()
|
ANSI
POSIX 1003.1
|
Yes |
No |
No |
Yes |
fputwc()
|
ANSI
POSIX 1003.1
|
Yes |
No |
No |
Yes |
fputws()
|
ANSI
POSIX 1003.1
|
Yes |
No |
No |
Yes |
fread()
|
ANSI
POSIX 1003.1
|
Yes |
No |
No |
Yes |
free()
|
ANSI
POSIX 1003.1
|
No |
No |
No |
Yes |
freeaddrinfo()
|
POSIX 1003.1
|
No |
No |
No |
Yes |
freeifaddrs()
|
Unix
|
No |
No |
No |
Yes |
freopen()
|
ANSI
POSIX 1003.1
|
Yes |
No |
No |
Yes |
freopen64()
|
Large-file support
|
Yes |
No |
No |
Yes |
frexp()
|
ANSI
POSIX 1003.1
|
No |
No |
No |
Yes |
frexpf()
|
ANSI
POSIX 1003.1
|
No |
No |
No |
Yes |
fs_crypto_check()
|
QNX Neutrino
|
No |
No |
No |
Yes |
fs_crypto_domain_add()
|
QNX Neutrino
|
No |
No |
No |
Yes |
fs_crypto_domain_key_change()
|
QNX Neutrino
|
No |
No |
No |
Yes |
fs_crypto_domain_key_check()
|
QNX Neutrino
|
No |
No |
No |
Yes |
fs_crypto_domain_key_size()
|
QNX Neutrino
|
No |
No |
No |
Yes |
fs_crypto_domain_lock()
|
QNX Neutrino
|
No |
No |
No |
Yes |
fs_crypto_domain_query()
|
QNX Neutrino
|
No |
No |
No |
Yes |
fs_crypto_domain_remove()
|
QNX Neutrino
|
No |
No |
No |
Yes |
fs_crypto_domain_unlock()
|
QNX Neutrino
|
No |
No |
No |
Yes |
fs_crypto_enable()
|
QNX Neutrino
|
No |
No |
No |
Yes |
fs_crypto_enable_option()
|
QNX Neutrino
|
No |
No |
No |
Yes |
fs_crypto_file_get_domain()
|
QNX Neutrino
|
No |
No |
No |
Yes |
fs_crypto_file_set_domain()
|
QNX Neutrino
|
No |
No |
No |
Yes |
fs_crypto_key_gen()
|
QNX Neutrino
|
No |
No |
No |
Yes |
fs_crypto_migrate_control()
|
QNX Neutrino
|
No |
No |
No |
Yes |
fs_crypto_migrate_path()
|
QNX Neutrino
|
No |
No |
No |
Yes |
fs_crypto_migrate_status()
|
QNX Neutrino
|
No |
No |
No |
Yes |
fs_crypto_migrate_tag()
|
QNX Neutrino
|
No |
No |
No |
Yes |
fs_crypto_set_logging()
|
QNX Neutrino
|
No |
No |
No |
Yes |
fscanf()
|
ANSI
POSIX 1003.1
|
Yes |
No |
No |
Yes |
fseek()
|
ANSI
POSIX 1003.1
|
Yes |
No |
Yes |
Yes |
fseeko()
|
POSIX 1003.1
|
Yes |
No |
Yes |
Yes |
fseeko64()
|
Large-file support
|
Yes |
No |
Yes |
Yes |
fsetpos()
|
ANSI
POSIX 1003.1
|
Yes |
No |
Yes |
Yes |
fstat()
|
POSIX 1003.1
|
No |
No |
Yes |
Yes |
fstat64()
|
Large-file support
|
No |
No |
Yes |
Yes |
fstatvfs()
|
POSIX 1003.1
|
No |
No |
Yes |
Yes |
fstatvfs64()
|
Large-file support
|
No |
No |
Yes |
Yes |
fsync()
|
POSIX 1003.1 FSC
|
Yes |
No |
Yes |
Yes |
ftell()
|
ANSI
POSIX 1003.1
|
Yes |
No |
No |
Yes |
ftello()
|
POSIX 1003.1
|
Yes |
No |
No |
Yes |
ftello64()
|
Large-file support
|
Yes |
No |
No |
Yes |
ftime()
|
Standard Unix; removed from POSIX.1-2008
|
No |
No |
Yes |
Yes |
ftruncate()
|
POSIX 1003.1
|
No |
No |
Yes |
Yes |
ftruncate64()
|
Large-file support
|
No |
No |
Yes |
Yes |
ftrylockfile()
|
POSIX 1003.1
|
No |
No |
Yes |
Yes |
ftw()
|
POSIX 1003.1 OB XSI
|
Yes |
No |
Yes |
Yes |
ftw64()
|
Large-file support
|
Yes |
No |
Yes |
Yes |
funlockfile()
|
POSIX 1003.1
|
No |
No |
No |
Yes |
futime()
|
Unix
|
No |
No |
Yes |
Yes |
fwide()
|
ANSI
POSIX 1003.1
|
No |
No |
Yes |
Yes |
fwprintf()
|
ANSI
POSIX 1003.1
|
Yes |
No |
No |
Yes |
fwrite()
|
ANSI
POSIX 1003.1
|
Yes |
No |
No |
Yes |
fwscanf()
|
ANSI
POSIX 1003.1
|
Yes |
No |
No |
Yes |