INTRO(3F) BSD INTRO(3F)
NAME
intro - introduction to FORTRAN library functions
DESCRIPTION
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).
The math intrinsics required by the 1977 FORTRAN standard are available,
although not described here. In addition, the abs, sqrt, exp, log, sin,
and cos intrinsics have been extended for double complex values. They
can be referenced by using the generic names listed above, or they can be
referenced by using their specific names that consist of the generic
names preceded by either cd or z. For example, if zz is double complex,
then sqrt(zz), zsqrt(zz), or cdsqrt(zz) compute the square root of zz.
The dcmplx intrinsic forms a double complex value from two double
precision variables or expressions, and the name of the specific function
for the conjugate of a double complex value is dconjg.
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.
LIST OF FUNCTIONS
Name Appears on Page Description
abort abort(3F) abnormal termination
access access(3F) determine accessibility of a file
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
chdir chdir(3F) change default directory
chmod chmod(3F) change mode of a file
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
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
functions bessel(3F) of two kinds for integer orders
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
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
len index(3F) tell about character objects
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
openpl plot(3F) f77 library interface to plot (3X)
libraries
perror perror(3F) get system error messages
plot plot(3F) f77 library interface to plot (3X) libraries
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
stat stat(3F) get file status
system system(3F) execute a UNIX 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