INTRO(3F)																 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 may be referenced using the generic names listed above, or
       they may be referenced using their specific names that consist of the generic names preceded by either cd or z.	For example, if zz is dou-
       ble 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 com-
       pleteness.

       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
       and	 bit.3f       bitwise and
       arc	 plot.3f      f77 interface to plot(3x)
       bessel	 bessel.3f    bessel functions of two kinds for integer orders
       box	 plot.3f      f77 interface to plot(3x)
       chdir	 chdir.3f     change default directory
       chmod	 chmod.3f     change mode of a file
       circle	 plot.3f      f77 interface to plot(3x)
       clospl	 plot.3f      f77 interface to plot(3x)
       cont	 plot.3f      f77 interface to plot(3x)
       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      f77 interface to plot(3x)
       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
       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      f77 interface to plot(3x)
       len	 index.3f     tell about character objects
       line	 plot.3f      f77 interface to plot(3x)
       linemd	 plot.3f      f77 interface to plot(3x)
       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
       lshift	 bit.3f       left shift
       lstat	 stat.3f      get file status
       ltime	 time.3f      return system time
       malloc	 malloc.3f    memory allocator
       move	 plot.3f      f77 interface to plot(3x)
       not	 bit.3f       bitwise complement
       openpl	 plot.3f      f77 interface to plot(3x)
       or	 bit.3f       bitwise or
       perror	 perror.3f    get system error messages
       point	 plot.3f      f77 interface to plot(3x)
       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
       rshift	 bit.3f       right shift
       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      f77 interface to plot(3x)
       stat	 stat.3f      get file status
       symlnk	 symlnk.3f    make a symbolic link
       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
       xor	 bit.3f       bitwise exclusive or

4.2 Berkeley Distribution					   May 27, 1986 							 INTRO(3F)