Copyright (c) 1983 Regents of the University of California.
All rights reserved. The Berkeley software License Agreement
specifies the terms and conditions for redistribution.

@(#)intro.3 6.2 (Berkeley) 06/07/85

C 5 intro - introduction to FORTRAN library functions

This section describes those functions that are in the Fortran run time library. The functions listed here provide an interface from f77 programs to the system in the same manner as the C library does for C programs. They are automatically loaded as needed by the Fortran compiler f77 (1), except for the graphics interface routines. Those must be explicitly requested, see plot (3f).

Most of these functions are in libU77.a. Some are in libF77.a or libI77.a. A few intrinsic functions are described for the sake of completeness.

For efficiency, the SCCS ID strings are not normally included in the a.out file. To include them, simply declare

 external f77lid

in any f77 module.

Name Appears on Page Description
abort abort.3f abnormal termination
access access.3f determine accessability of a file
arc plot.3f graphics interface
alarm alarm.3f execute a subroutine after a specified time
bessel bessel.3f of two kinds for integer orders
bit bit.3f and, or, xor, not, rshift, lshift bitwise functions
box plot.3f graphics interface
chdir chdir.3f change default directory
chmod chmod.3f change mode of a file
circle plot.3f graphics interface
clospl plot.3f graphics interface
cont plot.3f graphics interface
ctime time.3f return system time
dffrac flmin.3f return extreme values
dflmax flmin.3f return extreme values
dflmin flmin.3f return extreme values
drand rand.3f return random values
drandm random.3f better random number generator
dtime etime.3f return elapsed execution time
erase plot.3f graphics interface
etime etime.3f return elapsed execution time
exit exit.3f terminate process with status
falloc malloc.3f memory allocator
fdate fdate.3f return date and time in an ASCII string
ffrac flmin.3f return extreme values
fgetc getc.3f get a character from a logical unit
flmax flmin.3f return extreme values
flmin flmin.3f return extreme values
flush flush.3f flush output to a logical unit
fork fork.3f create a copy of this process
fpecnt trpfpe.3f trap and repair floating point faults
fputc putc.3f write a character to a fortran logical unit
free malloc.3f memory allocator
fseek fseek.3f reposition a file on a logical unit
fstat stat.3f get file status
ftell fseek.3f reposition a file on a logical unit
gerror perror.3f get system error messages
getarg getarg.3f return command line arguments
getc getc.3f get a character from a logical unit
getcwd getcwd.3f get pathname of current working directory
getenv getenv.3f get value of environment variables
getgid getuid.3f get user or group ID of the caller
getlog getlog.3f get user's login name
getpid getpid.3f get process id
getuid getuid.3f get user or group ID of the caller
gmtime time.3f return system time
hostnm hostnm.3f get name of current host
iargc getarg.3f return command line arguments
idate idate.3f return date or time in numerical form
ierrno perror.3f get system error messages
index index.3f tell about character objects
inmax flmin.3f return extreme values
intro intro.3f introduction to FORTRAN library functions
ioinit ioinit.3f change f77 I/O initialization
irand rand.3f return random values
irandm random.3f better random number generator
isatty ttynam.3f find name of a terminal port
itime idate.3f return date or time in numerical form
kill kill.3f send a signal to a process
label plot.3f graphics interface
len index.3f tell about character objects
line plot.3f graphics interface
linemd plot.3f graphics interface
link link.3f make a link to an existing file
lnblnk index.3f tell about character objects
loc loc.3f return the address of an object
long long.3f integer object conversion
lstat stat.3f get file status
ltime time.3f return system time
malloc malloc.3f memory allocator
move plot.3f graphics interface
openpl plot.3f graphics interface
perror perror.3f get system error messages
point plot.3f graphics interface
putc putc.3f write a character to a fortran logical unit
qsort qsort.3f quick sort
rand rand.3f return random values
random random.3f better random number generator
rename rename.3f rename a file
rindex index.3f tell about character objects
short long.3f integer object conversion
signal signal.3f change the action for a signal
sleep sleep.3f suspend execution for an interval
space plot.3f graphics interface
stat stat.3f get file status
system system.3f execute a \s-2UNIX\s0 command
tclose topen.3f f77 tape I/O
time time.3f return system time
topen topen.3f f77 tape I/O
traper traper.3f trap arithmetic errors
trapov trapov.3f trap and repair floating point overflow
tread topen.3f f77 tape I/O
trewin topen.3f f77 tape I/O
trpfpe trpfpe.3f trap and repair floating point faults
tskipf topen.3f f77 tape I/O
tstate topen.3f f77 tape I/O
ttynam ttynam.3f find name of a terminal port
twrite topen.3f f77 tape I/O
unlink unlink.3f remove a directory entry
wait wait.3f wait for a process to terminate