man pages section 3: Basic Library Functions
    
F
 
 fast, scalable memory allocation — umem_alloc ( Index Term Link )
 
 fast, scalable memory allocation — umem_free ( Index Term Link )
 
 fast, scalable memory allocation — umem_nofail_callback ( Index Term Link )
 
 fast, scalable memory allocation — umem_zalloc ( Index Term Link )
 
 fattach — attach a STREAMS-based file descriptor to an object in the file system name space ( Index Term Link )
 
 fclose — close a stream ( Index Term Link )
 
 fconvert — convert number to ASCII ( Index Term Link )
 
 FD_CLR — synchronous I/O multiplexing ( Index Term Link )
 
 FD_ISSET — synchronous I/O multiplexing ( Index Term Link )
 
 FD_SET — synchronous I/O multiplexing ( Index Term Link )
 
 FD_ZERO — synchronous I/O multiplexing ( Index Term Link )
 
 fdetach — detach a name from a STREAMS-based file descriptor ( Index Term Link )
 
 fdopen — associate a stream with a file descriptor ( Index Term Link )
 
 fdopendir — open directory ( Index Term Link )
 
 fdwalk — close or iterate over open file descriptors ( Index Term Link )
 
 fetch — data base subroutines ( Index Term Link )
 
 fflush — flush a stream ( Index Term Link )
 
 ffs — find first set bit ( Index Term Link )
 
 fgetc — get a byte from a stream ( Index Term Link )
 
 fgetgrent — group database entry functions ( Index Term Link )
 
 fgetgrent_r — group database entry functions ( Index Term Link )
 
 fgetpos — get current file position information ( Index Term Link )
 
 fgetpwent — get password entry from a file ( Index Term Link )
 
 fgetpwent_r — get password entry from a file ( Index Term Link )
 
 fgetspent — get shadow password database entry ( Index Term Link )
 
 fgetspent_r — get shadow password database entry(reentrant) ( Index Term Link )
 
 fgetwc — get a wide-character code from a stream ( Index Term Link )
 
 fgetws — get a wide-character string from a stream ( Index Term Link )
 
 file descriptor
  duplicate an open one — dup2 ( Index Term Link )
  STREAMS-based, attach to an object in file system name space — fattach ( Index Term Link )
  test for a STREAMS file — isastream ( Index Term Link )
 
 file descriptors, apply or remove advisory lock on open file — flock ( Index Term Link )
 
 file name, make a unique one — mktemp ( Index Term Link )
 
 make a unique file name — mkstemp ( Index Term Link )
 
 file pointer in a stream, reposition — fsetpos, fgetpos ( Index Term Link )
 
 file_to_decimal — decimal record from character stream ( Index Term Link )
 
 file tree
  recursively descend — ftw ( Index Term Link )
  recursively descend — nftw ( Index Term Link )
 
 files
  allows sections of file to be locked — lockf ( Index Term Link )
  optimizing usage of files — directio ( Index Term Link )
  — remove ( Index Term Link )
  report parent directory of file path name — dirname ( Index Term Link )
  set a file to a specified length — truncate ( Index Term Link )
 
 find a wide-character in memory — wmemchr ( Index Term Link )
 
 find a wide-character substring — wcsstr ( Index Term Link )
 
 find pathname of a terminal
  — ttyname ( Index Term Link )
  — ttyname_r ( Index Term Link )
 
 firstkey — data base subroutines ( Index Term Link )
 
 floating-point number, convert to string — ecvt ( Index Term Link )
 
 floating-point number, determine type
  — finite ( Index Term Link )
  — fpclass ( Index Term Link )
  — isnan ( Index Term Link )
  — isnand ( Index Term Link )
  — isnanf ( Index Term Link )
  — unordered ( Index Term Link )
 
 flock — apply or remove an advisory lock on an open file ( Index Term Link )
 
 flockfile — acquire and release stream lock ( Index Term Link )
 
 flush a stream — fflush ( Index Term Link )
 
 flush non-transmitted output data, non-read input data or both — tcflush ( Index Term Link )
 
 _flushlbf — interfaces to stdio FILE structure ( Index Term Link )
 
 fmtmsg — display a message on stderr or system console ( Index Term Link )
 
 fnmatch — match filename or path name ( Index Term Link )
 
 fopen — open a stream ( Index Term Link )
 
 fopen — open stream ( Index Term Link )
 
 formatted input conversion — wsscanf ( Index Term Link )
 
 formatted output conversion
  — fprintf ( Index Term Link )
  — printf ( Index Term Link )
  — sprintf ( Index Term Link )
  — vfprintf ( Index Term Link )
  — vprintf ( Index Term Link )
  — vsprintf ( Index Term Link )
 
 fpgetmask — IEEE floating-point environment control ( Index Term Link )
 
 fpgetround — IEEE floating-point environment control ( Index Term Link )
 
 fpgetsticky — IEEE floating-point environment control ( Index Term Link )
 
 fprintf — formatted output conversion ( Index Term Link )
 
 fprintf — print formatted output ( Index Term Link )
 
 fpsetmask — IEEE floating-point environment control ( Index Term Link )
 
 fpsetround — IEEE floating-point environment control ( Index Term Link )
 
 fpsetsticky —IEEE floating-point environment control ( Index Term Link )
 
 fputc — put a byte on a stream ( Index Term Link )
 
 fputwc — put wide-character code on a stream ( Index Term Link )
 
 fputws — put wide character string on a stream ( Index Term Link )
 
 fread — binary input ( Index Term Link )
 
 free — memory allocator ( Index Term Link )
 
 freopen — open a stream ( Index Term Link )
 
 freopen — open stream ( Index Term Link )
 
 frexp — extract mantissa and exponent from double precision number ( Index Term Link )
 
 fscanf — convert formatted input ( Index Term Link )
 
 fseek — reposition a file-position indicator in a stream ( Index Term Link )
 
 fseeko — reposition a file-position indicator in a stream ( Index Term Link )
 
 fsetpos — reposition a file pointer in a stream ( Index Term Link )
 
 fsync — synchronize changes to a file ( Index Term Link )
 
 ftell — return a file offset in a stream ( Index Term Link )
 
 ftello — return a file offset in a stream ( Index Term Link )
 
 ftime — get date and time ( Index Term Link )
 
 ftruncate — set a file to a specified length ( Index Term Link )
 
 ftw — walk a file tree ( Index Term Link )
 
 func_to_decimal — decimal record from character function ( Index Term Link )
 
 funlockfile — acquire and release stream lock ( Index Term Link )
 
 fwide — set stream orientation ( Index Term Link )
 
 fwprintf — print formatted wide-character output ( Index Term Link )
 
 fwrite — binary output ( Index Term Link )
 
 fwscanf — convert formatted wide-character input ( Index Term Link )