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1.1 root 1: . \" Definitions of L and LR for the benefit of systems
2: . \" whose -man lacks them...
3: .de L
4: .nh
5: .if n \%`\\$1'
6: .if t \%\&\f(CW\\$1\fR
7: .hy 14
8: ..
9: .de LR
10: .nh
11: .if n \%`\\$1'\\$2
12: .if t \%\&\f(CW\\$1\fR\\$2
13: .hy 14
14: ..
15: .TH F2C 1
16: .CT 1 prog_other
17: .SH NAME
18: f\^2c \(mi Convert Fortran 77 to C or C++
19: .SH SYNOPSIS
20: .B f\^2c
21: [
22: .I option ...
23: ]
24: .I file ...
25: .SH DESCRIPTION
26: .I F2c
27: converts Fortran 77 source code in
28: .I files
29: with names ending in
30: .L .f
31: or
32: .L .F
33: to C (or C++) source files in the
34: current directory, with
35: .L .c
36: substituted
37: for the final
38: .L .f
39: or
40: .LR .F .
41: If no Fortran files are named,
42: .I f\^2c
43: reads Fortran from standard input and
44: writes C on standard output.
45: .I File
46: names that end with
47: .L .p
48: or
49: .L .P
50: are taken to be prototype
51: files, as produced by option
52: .LR -P ,
53: and are read first.
54: .PP
55: The options are
56: .HP
57: .BR -w ,
58: .BR -w66 ,
59: .BR -onetrip ,
60: .BR -u ,
61: .BR -C ,
62: .BR -I2 ,
63: .B -I4
64: (default),
65: .BR -U
66: .br
67: Same as in
68: .IR f\^77 (1).
69: .PD0
70: .TP
71: .B -A
72: Produce
73: .SM ANSI
74: C.
75: Default is old-style C.
76: .TP
77: .B -a
78: Make local variables automatic rather than static
79: unless they appear in a
80: .SM "DATA, EQUIVALENCE, NAMELIST,"
81: or
82: .SM SAVE
83: statement.
84: .TP
85: .B -C++
86: Output C++ code.
87: .TP
88: .B -c
89: Include original Fortran source as comments.
90: .TP
91: .B -E
92: Declare uninitialized
93: .SM COMMON
94: to be
95: .B Extern
96: (overridably defined in
97: .F f2c.h
98: as
99: .B extern).
100: .TP
101: .B -ec
102: Place uninitialized
103: .SM COMMON
104: blocks in separate files:
105: .B COMMON /ABC/
106: appears in file
107: .BR abc_com.c .
108: Option
109: .LR -e1c
110: bundles the separate files
111: into the output file, with comments that give an unbundling
112: .IR sed (1)
113: script.
114: .TP
115: .B -ext
116: Complain about
117: .IR f\^77 (1)
118: extensions.
119: .TP
120: .B -g
121: Include original Fortran line numbers as comments.
122: .TP
123: .B -i2
124: Similar to
125: .BR -I2 ,
126: but assume a modified
127: .I libF77
128: and
129: .I libI77
130: (compiled with
131: .BR -Df\^2c_i2 ),
132: so
133: .SM INTEGER
134: and
135: .SM LOGICAL
136: variables may be assigned by
137: .SM INQUIRE.
138: .TP
139: .B -P
140: Write a
141: .IB file .P
142: of ANSI (or C++) prototypes
143: for procedures defined in each input
144: .IB file .f
145: or
146: .IB file .F .
147: When reading Fortran from standard input, write prototypes
148: at the beginning of standard output.
149: Implies
150: .B -A
151: unless option
152: .L -C++
153: is present. Option
154: .B -Ps
155: implies
156: .B -P
157: and gives exit status 4 if rerunning
158: .I f\^2c
159: may change prototypes or declarations.
160: .TP
161: .B -p
162: Supply preprocessor definitions to make common-block members
163: look like local variables.
164: .TP
165: .B -R
166: Do not promote
167: .SM REAL
168: functions and operations to
169: .SM DOUBLE PRECISION.
170: Option
171: .L -!R
172: confirms the default, which imitates
173: .IR f\^77 .
174: .TP
175: .B -r8
176: Promote
177: .SM REAL
178: to
179: .SM DOUBLE PRECISION, COMPLEX
180: to
181: .SM DOUBLE COMPLEX.
182: .TP
183: .BI -T dir
184: Put temporary files in directory
185: .I dir.
186: .TP
187: .B -w8
188: Suppress warnings when
189: .SM COMMON
190: or
191: .SM EQUIVALENCE
192: forces odd-word alignment of doubles.
193: .TP
194: .BI -W n
195: Assume
196: .I n
197: characters/word (default 4)
198: when initializing numeric variables with character data.
199: .TP
200: .B -z
201: Do not implicitly recognize
202: .SM DOUBLE COMPLEX.
203: .TP
204: .B -!c
205: Inhibit C output, but produce
206: .B -P
207: output.
208: .TP
209: .B -!I
210: Reject
211: .B include
212: statements.
213: .TP
214: .B -!it
215: Do not infer return types of untyped
216: .SM EXTERNAL
217: procedures from use as arguments.
218: .TP
219: .B -!P
220: Do not infer
221: .SM ANSI
222: or C++
223: prototypes from usage.
224: .PD
225: .PP
226: The resulting C invokes the support routines of
227: .IR f\^77 ;
228: object code should be loaded by
229: .I f\^77
230: or with
231: .IR ld (1)
232: or
233: .IR cc (1)
234: options
235: .BR "-lF77 -lI77 -lm" .
236: .SH FILES
237: .F /usr/include/f2c.h
238: .br
239: Other files as in
240: .IR f\^77 (1).
241: .SH "SEE ALSO"
242: S. I. Feldman and
243: P. J. Weinberger,
244: `A Portable Fortran 77 Compiler',
245: this manual, Volume 2.
246: .SH BUGS
247: Floating-point constant expressions are
248: accurate to at most 16 or 17 decimal places.
249: . ".br
250: . "Untypable
251: . ".SM EXTERNAL
252: . "functions are declared
253: . ".BR int .
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