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1.1 root 1: .TH F2C 1
2: .CT 1 prog_other
3: .SH NAME
4: f\^2c \(mi Convert Fortran 77 to C
5: .SH SYNOPSIS
6: .B f\^2c
7: [
8: .I option ...
9: ]
10: .I file ...
11: .SH DESCRIPTION
12: .I F2c
13: converts Fortran 77 source code to C.
14: Arguments that end with
15: .L .f
16: or
17: .L .F
18: are taken to be
19: Fortran 77 source programs;
20: each is converted to a C source file in the
21: current directory
22: whose name is that of the source with
23: .L .c
24: substituted
25: for the final
26: .L .f
27: or
28: .LR .F .
29: If no
30: .I file
31: arguments are given, then
32: .I f\^2c
33: reads Fortran 77 on its standard input and
34: writes the resulting C on its standard output.
35: .PP
36: The following options have the same meaning as in
37: .IR f\^77 (1).
38: .TP
39: .B -w
40: Suppress all warning messages.
41: .TP
42: .B -w66
43: Suppress Fortran 66 compatibility warnings.
44: .TP
45: .B -onetrip
46: Compile DO loops that are performed at least once if reached.
47: (Fortran 77 DO loops are not performed at all if the upper limit is smaller than the lower limit.)
48: .TP
49: .B -u
50: Make the default type of a variable `undefined' rather than using the default Fortran rules.
51: .TP
52: .B -C
53: Compile code to check that subscripts are within declared array bounds.
54: .TP
55: .B -I2
56: Render INTEGER and LOGICAL as short,
57: INTEGER\(**4 as long int. Assume the default \fIlibF77\fR
58: and \fIlibI77\fR: allow only INTEGER\(**4 (and no LOGICAL)
59: variables in INQUIREs.
60: .TP
61: .B -U
62: Honor the case of variable and external names. Fortran keywords must be in
63: .I
64: lower
65: case.
66: .PP
67: The following options are peculiar to
68: .IR f\^2c .
69: .TP
70: .B -A
71: Use ANSI C constructs. The default is old-style (pre-ANSI) C.
72: .TP
73: .B -R
74: Do not promote REAL functions and operations to DOUBLE PRECISION (as
75: .I f\^77
76: does).
77: . \".TP
78: . \".B -ext
79: . \"Complain about f77 extensions.
80: .TP
81: .B -i2
82: Similar to \f(CW-I2\fR, but assume a modified \fIlibF77\fR and \fIlibI77\fR
83: (compiled with \f(CW-Df2c_i2\fR),
84: so INTEGER and LOGICAL variables may be assigned in INQUIREs.
85: .TP
86: .B -a
87: Give local variables automatic (rather than static) storage
88: unless they appear in a DATA, EQUIVALENCE, or SAVE statement.
89: .TP
90: .B -r8
91: Promote REAL to DOUBLE PRECISION, COMPLEX to DOUBLE COMPLEX.
92: .TP
93: .B -z
94: Do not implicitly recognize DOUBLE COMPLEX.
95: .PP
96: The resulting C invokes routines from
97: .IR f\^77 's
98: support libraries,
99: .I libI77
100: and
101: .IR libF77 ;
102: programs should be loaded by \f(CWf77 \fR... or
103: by \f(CWcc \fR...\f(CW -lI77 -lF77 -lm\fR . Calling conventions
104: are those of
105: .IR f\&77 :
106: see the reference below.
107: .SH FILES
108: .TF /usr/lib/libF77.a
109: .TP
110: .IB file .[fF]
111: input file
112: .TP
113: .B *.c
114: output file
115: .TP
116: .F /usr/include/f2c.h
117: header file
118: .TP
119: .F /usr/lib/libF77.a
120: intrinsic function library
121: .TP
122: .F /usr/lib/libI77.a
123: Fortran I/O library
124: .TP
125: .F /lib/libc.a
126: C library, see section 3
127: .SH "SEE ALSO"
128: S. I. Feldman and
129: P. J. Weinberger,
130: `A Portable Fortran 77 Compiler',
131: this manual, Volume 2
132: .SH DIAGNOSTICS
133: The diagnostics produced by
134: .I f\^2c
135: are intended to be
136: self-explanatory.
137: .SH BUGS
138: Floating-point constants of over 17 significant digits are rounded to 17
139: significant digits.
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