1 /***********************************************************************
2 * *
3 * This software is part of the ast package *
4 * Copyright (c) 1985-2011 AT&T Intellectual Property *
5 * and is licensed under the *
6 * Eclipse Public License, Version 1.0 *
7 * by AT&T Intellectual Property *
8 * *
9 * A copy of the License is available at *
10 * http://www.eclipse.org/org/documents/epl-v10.html *
11 * (with md5 checksum b35adb5213ca9657e911e9befb180842) *
12 * *
13 * Information and Software Systems Research *
14 * AT&T Research *
15 * Florham Park NJ *
16 * *
17 * Glenn Fowler <gsf@research.att.com> *
18 * David Korn <dgk@research.att.com> *
19 * Phong Vo <kpv@research.att.com> *
20 * *
21 ***********************************************************************/
22 #pragma prototyped
23 /*
24 * Glenn Fowler
25 * AT&T Research
26 *
27 * generate limits features
28 *
29 * FOPEN_MAX POSIX says ANSI defines it but it's not in ANSI
30 *
31 * NOTE: two's complement binary integral representation assumed
32 */
33
34 #if defined(__STDPP__directive) && defined(__STDPP__hide)
35 __STDPP__directive pragma pp:hide getpagesize getdtablesize
36 #else
37 #define getpagesize ______getpagesize
38 #define getdtablesize ______getdtablesize
39 #endif
40
41 /*
42 * we'd like as many symbols as possible defined
43 * the standards push the vendors the other way
44 * but don't provide guard that lets everything through
45 * so each vendor adds their own guard
46 * many now include something like <standards.h> to
47 * get it straight in one place -- <sys/types.h> should
48 * kick that in
49 */
50
51 #include "FEATURE/standards"
52 #include "FEATURE/lib"
53
54 #ifdef __sun
55 #define _timespec timespec
56 #endif
57
58 #include <sys/types.h>
59
60 #undef _SGIAPI
61 #define _SGIAPI 1
62
63 #if _hdr_limits
64 #include <limits.h>
65 #endif
66
67 #undef _SGIAPI
68 #define _SGIAPI 0
69
70 #include "FEATURE/lib"
71 #include "FEATURE/common"
72
73 #if _hdr_unistd
74 #include <unistd.h>
75 #endif
76
77 #include "FEATURE/param"
78
79 #if defined(__STDPP__directive) && defined(__STDPP__hide)
80 __STDPP__directive pragma pp:nohide getpagesize getdtablesize
81 #else
82 #undef getpagesize
83 #undef getdtablesize
84 #endif
85
main()86 int main()
87 {
88 char c;
89 unsigned char uc;
90 unsigned short us;
91 unsigned int ui;
92 unsigned long ul;
93 unsigned long val;
94 #if _typ_uint64_t
95 uint64_t ull;
96 uint64_t vll;
97 #endif
98
99 /*
100 * <limits.h> with *constant* valued macros
101 */
102
103 printf("\n");
104 #ifndef CHAR_BIT
105 uc = 0;
106 uc = ~uc;
107 val = 1;
108 while (uc >>= 1) val++;
109 printf("#define CHAR_BIT %lu\n", val);
110 #endif
111 #ifndef MB_LEN_MAX
112 val = 1;
113 printf("#define MB_LEN_MAX %lu\n", val);
114 #endif
115
116 c = 0;
117 c = ~c;
118 uc = 0;
119 uc = ~uc;
120 us = 0;
121 us = ~us;
122 ui = 0;
123 ui = ~ui;
124 ul = 0;
125 ul = ~ul;
126 #if _typ_uint64_t
127 ull = 0;
128 ull = ~ull;
129 #endif
130
131 #ifndef UCHAR_MAX
132 val = uc;
133 printf("#if defined(__STDC__)\n");
134 printf("#define UCHAR_MAX %luU\n", val);
135 printf("#else\n");
136 printf("#define UCHAR_MAX %lu\n", val);
137 printf("#endif\n");
138 #endif
139
140 #ifndef SCHAR_MIN
141 val = (unsigned char)(uc >> 1) + 1;
142 printf("#define SCHAR_MIN (-%lu)\n", val);
143 #endif
144
145 #ifndef SCHAR_MAX
146 val = (unsigned char)(uc >> 1);
147 printf("#define SCHAR_MAX %lu\n", val);
148 #endif
149
150 if (c < 0)
151 {
152 #ifndef CHAR_MIN
153 printf("#define CHAR_MIN SCHAR_MIN\n");
154 #endif
155
156 #ifndef CHAR_MAX
157 printf("#define CHAR_MAX SCHAR_MAX\n");
158 #endif
159 }
160 else
161 {
162 #ifndef CHAR_MIN
163 printf("#define CHAR_MIN 0\n");
164 #endif
165
166 #ifndef CHAR_MAX
167 printf("#define CHAR_MAX UCHAR_MAX\n");
168 #endif
169 }
170
171 #ifndef USHRT_MAX
172 val = us;
173 printf("#if defined(__STDC__)\n");
174 printf("#define USHRT_MAX %luU\n", val);
175 printf("#else\n");
176 printf("#define USHRT_MAX %lu\n", val);
177 printf("#endif\n");
178 #endif
179
180 #ifndef SHRT_MIN
181 val = (unsigned short)(us >> 1) + 1;
182 printf("#define SHRT_MIN (-%lu)\n", val);
183 #endif
184
185 #ifndef SHRT_MAX
186 val = (unsigned short)(us >> 1);
187 printf("#define SHRT_MAX %lu\n", val);
188 #endif
189
190 if (ui == us)
191 {
192 #ifndef UINT_MAX
193 printf("#define UINT_MAX USHRT_MAX\n");
194 #endif
195
196 #ifndef INT_MIN
197 printf("#define INT_MIN SHRT_MIN\n");
198 #endif
199
200 #ifndef INT_MAX
201 printf("#define INT_MAX SHRT_MAX\n");
202 #endif
203 }
204 else
205 {
206 #ifndef UINT_MAX
207 val = ui;
208 printf("#if defined(__STDC__)\n");
209 printf("#define UINT_MAX %luU\n", val);
210 printf("#else\n");
211 printf("#define UINT_MAX %lu\n", val);
212 printf("#endif\n");
213 #endif
214
215 #ifndef INT_MIN
216 val = (unsigned int)(ui >> 1) + 1;
217 if (ui == ul) printf("#define INT_MIN (-%lu-1)\n", val - 1);
218 else printf("#define INT_MIN (-%lu)\n", val);
219 #endif
220
221 #ifndef INT_MAX
222 val = (unsigned int)(ui >> 1);
223 printf("#define INT_MAX %lu\n", val);
224 #endif
225 }
226
227 if (ul == ui)
228 {
229 #ifndef ULONG_MAX
230 printf("#define ULONG_MAX UINT_MAX\n");
231 #endif
232
233 #ifndef LONG_MIN
234 printf("#define LONG_MIN INT_MIN\n");
235 #endif
236
237 #ifndef LONG_MAX
238 printf("#define LONG_MAX INT_MAX\n");
239 #endif
240 }
241 else
242 {
243 #ifndef ULONG_MAX
244 val = ul;
245 printf("#if defined(__STDC__)\n");
246 printf("#define ULONG_MAX %luLU\n", val);
247 printf("#else\n");
248 printf("#define ULONG_MAX %lu\n", val);
249 printf("#endif\n");
250 #endif
251
252 #ifndef LONG_MIN
253 val = (unsigned long)(ul >> 1) + 1;
254 printf("#define LONG_MIN (-%luL-1L)\n", val - 1);
255 #endif
256
257 #ifndef LONG_MAX
258 val = (unsigned long)(ul >> 1);
259 printf("#define LONG_MAX %luL\n", val);
260 #endif
261 }
262
263 #if _typ_uint64_t && !_ast_intmax_long
264 if (ull == ul)
265 {
266 #ifndef ULLONG_MAX
267 printf("#define ULLONG_MAX ULONG_MAX\n");
268 #endif
269
270 #ifndef LLONG_MIN
271 printf("#define LLONG_MIN LONG_MIN\n");
272 #endif
273
274 #ifndef LLONG_MAX
275 printf("#define LLONG_MAX LONG_MAX\n");
276 #endif
277 }
278 else
279 {
280 #ifndef ULLONG_MAX
281 vll = ull;
282 printf("#ifndef ULLONG_MAX\n");
283 printf("#if defined(__STDC__) && _ast_LL\n");
284 printf("#define ULLONG_MAX %lluULL\n", vll);
285 printf("#else\n");
286 printf("#define ULLONG_MAX %llu\n", vll);
287 printf("#endif\n");
288 printf("#endif\n");
289 #endif
290
291 #ifndef LLONG_MIN
292 vll = (uint64_t)(ull >> 1) + 1;
293 printf("#ifndef LLONG_MIN\n");
294 printf("#if defined(__STDC__) && _ast_LL\n");
295 printf("#define LLONG_MIN (-%lluLL-1LL)\n", vll - 1);
296 printf("#else\n");
297 printf("#define LLONG_MIN (-%llu-1)\n", vll - 1);
298 printf("#endif\n");
299 printf("#endif\n");
300 #endif
301
302 #ifndef LLONG_MAX
303 vll = (uint64_t)(ull >> 1);
304 printf("#ifndef LLONG_MAX\n");
305 printf("#if defined(__STDC__) && _ast_LL\n");
306 printf("#define LLONG_MAX %lluLL\n", vll);
307 printf("#else\n");
308 printf("#define LLONG_MAX %llu\n", vll);
309 printf("#endif\n");
310 printf("#endif\n");
311 #endif
312 }
313 #endif
314
315 printf("\n");
316 #ifdef _UWIN
317 printf("#ifdef _UWIN\n");
318 printf("#ifndef DBL_DIG\n");
319 printf("#define DBL_DIG 15\n");
320 printf("#endif\n");
321 printf("#ifndef DBL_MAX\n");
322 printf("#define DBL_MAX 1.7976931348623158e+308\n");
323 printf("#endif\n");
324 printf("#ifndef FLT_DIG\n");
325 printf("#define FLT_DIG 6\n");
326 printf("#endif\n");
327 printf("#ifndef FLT_MAX\n");
328 printf("#define FLT_MAX 3.402823466e+38F\n");
329 printf("#endif\n");
330 printf("#endif\n");
331 printf("\n");
332 #endif
333
334 #include "conflim.h"
335
336 printf("\n");
337
338 return 0;
339 }
340