abort(3f) abort: abnormal termination.
access(3f) access: determine accessability of a file.
alarm(3f) alarm: execute a subroutine after a specified time.
bessel(3f) bessel functions: of two kinds for integer orders.
bit(3f) bit: and, or, xor, not, rshift, lshift bitwise functions.
chdir(3f) chdir: change default directory.
chmod(3f) chmod: change mode of a file.
etime(3f) etime, dtime: return elapsed execution time.
exit(3f) exit: terminate process with status.
fdate(3f) fdate: return date and time in an ASCII string.
flmin(3f) flmin, flmax, ffrac, dflmin, dflmax, dffrac, inmax: return extreme values.
flush(3f) flush: flush output to a logical unit.
fork(3f) fork: create a copy of this process.
fseek(3f) fseek, ftell: reposition a file on a logical unit.
getarg(3f) getarg, iargc: return command line arguments.
getc(3f) getc, fgetc: get a character from a logical unit.
getcwd(3f) getcwd: get pathname of current working directory.
getenv(3f) getenv: get value of environment variables.
getlog(3f) getlog: get user's login name.
getpid(3f) getpid: get process id.
getuid(3f) getuid, getgid: get user or group ID of the caller.
hostnm(3f) hostnm: get name of current host.
idate(3f) idate, itime: return date or time in numerical form.
index(3f) index, rindex, lnblnk, len: tell about character objects.
intro(3f) intro: introduction to FORTRAN library functions.
ioinit(3f) ioinit: change f77 I/O initialization.
kill(3f) kill: send a signal to a process.
link(3f) link: make a link to an existing file.
loc(3f) loc: return the address of an object.
long(3f) long, short: integer object conversion.
malloc(3f) malloc, free, falloc: memory allocator.
perror(3f) perror, gerror, ierrno: get system error messages.
plot(3f) plot: openpl et al.: f77 library interface to \fIplot\fR (3X) libraries..
putc(3f) putc, fputc: write a character to a fortran logical unit.
qsort(3f) qsort: quick sort.
rand(3f) rand, drand, irand: return random values.
random(3f) random, drandm, irandm: better random number generator.
rename(3f) rename: rename a file.
signal(3f) signal: change the action for a signal.
sleep(3f) sleep: suspend execution for an interval.
stat(3f) stat, lstat, fstat: get file status.
system(3f) system: execute a UNIX command.
time(3f) time, ctime, ltime, gmtime: return system time.
topen(3f) topen, tclose, tread, twrite, trewin, tskipf, tstate: f77 tape I/O.
traper(3f) traper: trap arithmetic errors.
trapov(3f) trapov: trap and repair floating point overflow.
trpfpe(3f) trpfpe, fpecnt: trap and repair floating point faults.
ttynam(3f) ttynam, isatty: find name of a terminal port.
unlink(3f) unlink: remove a directory entry.
wait(3f) wait: wait for a process to terminate.