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db2a4623 DR |
1 | .th FC I 8/20/73 |
2 | .sh NAME | |
3 | fc \*- fortran compiler | |
4 | .sh SYNOPSIS | |
5 | .bd fc | |
6 | [ | |
7 | .bd \*-c | |
8 | ] sfile1.f ... ofile1 ... | |
9 | .sh DESCRIPTION | |
10 | .it Fc | |
11 | is the UNIX Fortran compiler. | |
12 | It accepts three types of arguments: | |
13 | .s3 | |
14 | Arguments whose names end with `.f' are assumed to be | |
15 | Fortran source program units; they are compiled, and | |
16 | the object program is left on the file sfile1.o (i.e. | |
17 | the file whose name is that of the source with `.o' substituted | |
18 | for `.f'). | |
19 | .s3 | |
20 | Other arguments (except for | |
21 | \fB\*-c\fR) | |
22 | are assumed | |
23 | to be either loader flags, or | |
24 | object programs, typically produced by an earlier | |
25 | .it fc | |
26 | run, | |
27 | or perhaps libraries of Fortran-compatible routines. | |
28 | These programs, together with the results of any | |
29 | compilations specified, are loaded (in the order | |
30 | given) to produce an executable program with name | |
31 | .bd a.out. | |
32 | .s3 | |
33 | The | |
34 | .bd \*-c | |
35 | argument suppresses the loading phase, as does | |
36 | any syntax error in any of the routines being compiled. | |
37 | .s3 | |
38 | The following is a list | |
39 | of differences between | |
40 | .it fc | |
41 | and ANSI standard Fortran (also see the BUGS section): | |
42 | .s3 | |
43 | .lp +4 4 | |
44 | 1. Arbitrary combination of types is allowed | |
45 | in expressions. Not all combinations are expected to | |
46 | be supported at runtime. | |
47 | All of the normal | |
48 | conversions involving integer, real, double | |
49 | precision and complex are allowed. | |
50 | .s3 | |
51 | .lp +4 4 | |
52 | 2. DEC's \fBimplicit\fR statement is recognized. | |
53 | E.g.: | |
54 | .bd "implicit integer /i\*-n/". | |
55 | .s3 | |
56 | .lp +4 4 | |
57 | 3. The types | |
58 | doublecomplex, logical*1, | |
59 | integer*1, integer*2 and real*8 (double precision) | |
60 | are supported. | |
61 | .s3 | |
62 | .lp +4 4 | |
63 | 4. \fB&\fR as the first character of a line | |
64 | signals a continuation card. | |
65 | .s3 | |
66 | .lp +4 4 | |
67 | 5. \fBc\fR as the first character of a line signals a comment. | |
68 | .s3 | |
69 | .lp +4 4 | |
70 | 6. All keywords are recognized in lower case. | |
71 | .s3 | |
72 | .lp +4 4 | |
73 | 7. The notion of `column 7' is not implemented. | |
74 | .s3 | |
75 | .lp +4 4 | |
76 | 8. G-format input is free form\*- | |
77 | leading blanks are ignored, the first blank after the start | |
78 | of the number terminates the field. | |
79 | .s3 | |
80 | .lp +4 4 | |
81 | 9. A comma in any numeric or logical input field terminates | |
82 | the field. | |
83 | .s3 | |
84 | .lp +4 4 | |
85 | 10. There is no carriage control on output. | |
86 | .s3 | |
87 | .lp +4 4 | |
88 | 11. A sequence of | |
89 | .it n | |
90 | characters in double quotes `"' is equivalent to | |
91 | .it n | |
92 | .bd h | |
93 | followed by those characters. | |
94 | .s3 | |
95 | .lp +4 4 | |
96 | 12. In | |
97 | .bd data | |
98 | statements, a hollerith string may initialize an array | |
99 | or a sequence of array elements. | |
100 | .s3 | |
101 | .lp +4 4 | |
102 | 13. The number of storage units requested by a binary | |
103 | .bd read | |
104 | must be identical to the number contained | |
105 | in the record being read. | |
106 | .s3 | |
107 | .i0 | |
108 | In I/O statements, only unit numbers 0-19 are supported. | |
109 | Unit number | |
110 | .it n | |
111 | refers to file | |
112 | fort\fInn;\fR | |
113 | (e.g. unit 9 is file `fort09'). | |
114 | For input, the file must exist; | |
115 | for output, it will be created. | |
116 | Unit 5 is permanently associated with | |
117 | the standard input file; unit 6 with the | |
118 | standard output file. | |
119 | Also see | |
120 | .it setfil | |
121 | (III) | |
122 | for a way to associate unit numbers with named files. | |
123 | .sh FILES | |
124 | .ta 1.5i | |
125 | file.f input file | |
126 | .nf | |
127 | a.out loaded output | |
128 | f.tmp[123] temporary (deleted) | |
129 | /usr/fort/fc1 compiler proper | |
130 | /lib/fr0.o runtime startoff | |
131 | /lib/filib.a interpreter library | |
132 | /lib/libf.a builtin functions, etc. | |
133 | /lib/liba.a system library | |
134 | .fi | |
135 | .sh "SEE ALSO" | |
136 | ANSI standard, | |
137 | ld(I) for loader flags | |
138 | .br | |
139 | Also see the writeups on the precious few | |
140 | non-standard Fortran subroutines, | |
141 | ierror and setfil (III) | |
142 | .sh DIAGNOSTICS | |
143 | Compile-time diagnostics are given in English, | |
144 | accompanied if possible with the offending | |
145 | line number and source line with an underscore where the error | |
146 | occurred. | |
147 | Runtime diagnostics | |
148 | are given by number as follows: | |
149 | .s3 | |
150 | .lp +5 5 | |
151 | 1 invalid log argument | |
152 | .lp +5 5 | |
153 | 2 bad arg count to amod | |
154 | .lp +5 5 | |
155 | 3 bad arg count to atan2 | |
156 | .lp +5 5 | |
157 | 4 excessive argument to cabs | |
158 | .lp +5 5 | |
159 | 5 exp too large in cexp | |
160 | .lp +5 5 | |
161 | 6 bad arg count to cmplx | |
162 | .lp +5 5 | |
163 | 7 bad arg count to dim | |
164 | .lp +5 5 | |
165 | 8 excessive argument to exp | |
166 | .lp +5 5 | |
167 | 9 bad arg count to idim | |
168 | .lp +5 5 | |
169 | 10 bad arg count to isign | |
170 | .lp +5 5 | |
171 | 11 bad arg count to mod | |
172 | .lp +5 5 | |
173 | 12 bad arg count to sign | |
174 | .lp +5 5 | |
175 | 13 illegal argument to sqrt | |
176 | .lp +5 5 | |
177 | 14 assigned/computed goto out of range | |
178 | .lp +5 5 | |
179 | 15 subscript out of range | |
180 | .lp +5 5 | |
181 | 16 real**real overflow | |
182 | .lp +5 5 | |
183 | 17 (negative real)**real | |
184 | .s3 | |
185 | .lp +5 5 | |
186 | 100 illegal I/O unit number | |
187 | .lp +5 5 | |
188 | 101 inconsistent use of I/O unit | |
189 | .lp +5 5 | |
190 | 102 cannot create output file | |
191 | .lp +5 5 | |
192 | 103 cannot open input file | |
193 | .lp +5 5 | |
194 | 104 EOF on input file | |
195 | .lp +5 5 | |
196 | 105 illegal character in format | |
197 | .lp +5 5 | |
198 | 106 format does not begin with ( | |
199 | .lp +5 5 | |
200 | 107 no conversion in format but non-empty list | |
201 | .lp +5 5 | |
202 | 108 excessive parenthesis depth in format | |
203 | .lp +5 5 | |
204 | 109 illegal format specification | |
205 | .lp +5 5 | |
206 | 110 illegal character in input field | |
207 | .lp +5 5 | |
208 | 111 end of format in hollerith specification | |
209 | .lp +5 5 | |
210 | 999 unimplemented input conversion | |
211 | .i0 | |
212 | Any of these errors can be caught by the program; | |
213 | see | |
214 | .it ierror | |
215 | (III). | |
216 | .sh BUGS | |
217 | The following is a list of | |
218 | those features not yet implemented: | |
219 | .s3 | |
220 | .br | |
221 | arithmetic statement functions | |
222 | .br | |
223 | scale factors on input | |
224 | .s3 | |
225 | .bd Backspace | |
226 | statement. |