- ferror
- fexecve
- fflush
- ffs
- ffsl
- ffsll
- fgetc
- fgetgrent
- fgetgrent_r
- fgetpos
- fgetpwent
- fgetpwent_r
- fgets
- fgetwc
- fgetws
- fileno
- finite
- finitef
- finitel
- flockfile
- floor
- floorf
- floorl
- fma
- fmaf
- fmal
- fmax
- fmaxf
- fmaxl
- fmemopen
- fmin
- fminf
- fminl
- fmod
- fmodf
- fmodl
- fmtmsg
- fnmatch
- fopen
- forkpty
- fpathconf
- fpclassify
- fpurge
- fputc
- fputs
- fputwc
- fputws
- fread
- free
- freeaddrinfo
- freehostent
- freeifaddrs
- freopen
- frexp
- frexpf
- frexpl
- fscanf
- fseek
- fseeko
- fsetpos
- fstatvfs
- ftell
- ftello
- ftime
- ftok
- ftrylockfile
- fts
- fts_children
- fts_close
- fts_open
MAN (3)
Library functions, covering in particular the C standard library