1INTRO(3F) INTRO(3F)
2
6 intro - introduction to FORTRAN library functions
7
9 This section describes those functions that are in the Fortran run time
10 library. The functions listed here provide an interface from f77 pro‐
11 grams to the system in the same manner as the C library does for C pro‐
12 grams. They are automatically loaded as needed by the Fortran compiler
13 f77(1), except for the graphics interface routines. Those must be
14 explicitly requested, see plot(3f).
15 The math intrinsics required by the 1977 Fortran standard are avail‐
17 able, although not described here. In addition, the abs, sqrt, exp,
18 log, sin, and cos intrinsics have been extended for double complex val‐
19 ues. They may be referenced using the generic names listed above, or
20 they may be referenced using their specific names that consist of the
21 generic names preceded by either cd or z. For example, if zz is double
22 complex, then sqrt(zz), zsqrt(zz), or cdsqrt(zz) compute the square
23 root of zz. The dcmplx intrinsic forms a double complex value from two
24 double precision variables or expressions, and the name of the specific
25 function for the conjugate of a double complex value is dconjg.
26 Most of these functions are in libU77.a. Some are in libF77.a or
28 libI77.a. A few intrinsic functions are described for the sake of com‐
29 pleteness.
30 For efficiency, the SCCS ID strings are not normally included in the
32 a.out file. To include them, simply declare
33 external f77lid
35 in any f77 module.
37
39 Name Appears on Page Description
40 abort abort.3f abnormal termination
41 access access.3f determine accessibility of a file
42 alarm alarm.3f execute a subroutine after a specified time
43 and bit.3f bitwise and
44 arc plot.3f f77 interface to plot(3x)
45 bessel bessel.3f bessel functions of two kinds for integer orders
46 box plot.3f f77 interface to plot(3x)
47 chdir chdir.3f change default directory
48 chmod chmod.3f change mode of a file
49 circle plot.3f f77 interface to plot(3x)
50 clospl plot.3f f77 interface to plot(3x)
51 cont plot.3f f77 interface to plot(3x)
52 ctime time.3f return system time
53 dffrac flmin.3f return extreme values
54 dflmax flmin.3f return extreme values
55 dflmin flmin.3f return extreme values
56 drand rand.3f return random values
57 drandm random.3f better random number generator
58 dtime etime.3f return elapsed execution time
59 erase plot.3f f77 interface to plot(3x)
60 etime etime.3f return elapsed execution time
61 exit exit.3f terminate process with status
62 falloc malloc.3f memory allocator
63 fdate fdate.3f return date and time in an ASCII string
64 ffrac flmin.3f return extreme values
65 fgetc getc.3f get a character from a logical unit
66 flmax flmin.3f return extreme values
67 flmin flmin.3f return extreme values
68 flush flush.3f flush output to a logical unit
69 fork fork.3f create a copy of this process
70 fpecnt trpfpe.3f trap and repair floating point faults
71 fputc putc.3f write a character to a fortran logical unit
72 free malloc.3f memory allocator
73 fseek fseek.3f reposition a file on a logical unit
74 fstat stat.3f get file status
75 ftell fseek.3f reposition a file on a logical unit
76 gerror perror.3f get system error messages
77 getarg getarg.3f return command line arguments
78 getc getc.3f get a character from a logical unit
79 getcwd getcwd.3f get pathname of current working directory
80 getenv getenv.3f get value of environment variables
81 getgid getuid.3f get user or group ID of the caller
82 getlog getlog.3f get user's login name
83 getpid getpid.3f get process id
84 getuid getuid.3f get user or group ID of the caller
85 gmtime time.3f return system time
86 hostnm hostnm.3f get name of current host
87 iargc getarg.3f return command line arguments
88 idate idate.3f return date or time in numerical form
89 ierrno perror.3f get system error messages
90 index index.3f tell about character objects
91 inmax flmin.3f return extreme values
92 ioinit ioinit.3f change f77 I/O initialization
93 irand rand.3f return random values
94 irandm random.3f better random number generator
95 isatty ttynam.3f find name of a terminal port
96 itime idate.3f return date or time in numerical form
97 kill kill.3f send a signal to a process
98 label plot.3f f77 interface to plot(3x)
99 len index.3f tell about character objects
100 line plot.3f f77 interface to plot(3x)
101 linemd plot.3f f77 interface to plot(3x)
102 link link.3f make a link to an existing file
103 lnblnk index.3f tell about character objects
104 loc loc.3f return the address of an object
105 long long.3f integer object conversion
106 lshift bit.3f left shift
107 lstat stat.3f get file status
108 ltime time.3f return system time
109 malloc malloc.3f memory allocator
110 move plot.3f f77 interface to plot(3x)
111 not bit.3f bitwise complement
112 openpl plot.3f f77 interface to plot(3x)
113 or bit.3f bitwise or
114 perror perror.3f get system error messages
115 point plot.3f f77 interface to plot(3x)
116 putc putc.3f write a character to a fortran logical unit
117 qsort qsort.3f quick sort
118 rand rand.3f return random values
119 random random.3f better random number generator
120 rename rename.3f rename a file
121 rindex index.3f tell about character objects
122 rshift bit.3f right shift
123 short long.3f integer object conversion
124 signal signal.3f change the action for a signal
125 sleep sleep.3f suspend execution for an interval
126 space plot.3f f77 interface to plot(3x)
127 stat stat.3f get file status
128 symlnk symlnk.3f make a symbolic link
129 system system.3f execute a UNIX command
130 tclose topen.3f f77 tape I/O
131 time time.3f return system time
132 topen topen.3f f77 tape I/O
133 traper traper.3f trap arithmetic errors
134 trapov trapov.3f trap and repair floating point overflow
135 tread topen.3f f77 tape I/O
136 trewin topen.3f f77 tape I/O
137 trpfpe trpfpe.3f trap and repair floating point faults
138 tskipf topen.3f f77 tape I/O
139 tstate topen.3f f77 tape I/O
140 ttynam ttynam.3f find name of a terminal port
141 twrite topen.3f f77 tape I/O
142 unlink unlink.3f remove a directory entry
143 wait wait.3f wait for a process to terminate
144 xor bit.3f bitwise exclusive or
1454.2 Berkeley Distribution May 27, 1986 INTRO(3F)