F

Function Classification Cancel ISR Signal Thread
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 XSI 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 TSF 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 Yes
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
fp_setenv() 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
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 XSI 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() POSIX 1003.1 XSI No No Yes Yes
ftruncate() POSIX 1003.1 No No Yes Yes
ftruncate64() Large-file support No No Yes Yes
ftrylockfile() POSIX 1003.1 TSF No No Yes Yes
ftw() POSIX 1003.1 XSI Yes No Yes Yes
ftw64() Large-file support Yes No Yes Yes
funlockfile() POSIX 1003.1 TSF 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