Line data Source code
1 : /* Test intprops.h.
2 : Copyright (C) 2011-2020 Free Software Foundation, Inc.
3 :
4 : This program is free software: you can redistribute it and/or modify
5 : it under the terms of the GNU General Public License as published by
6 : the Free Software Foundation; either version 3 of the License, or
7 : (at your option) any later version.
8 :
9 : This program is distributed in the hope that it will be useful,
10 : but WITHOUT ANY WARRANTY; without even the implied warranty of
11 : MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 : GNU General Public License for more details.
13 :
14 : You should have received a copy of the GNU General Public License
15 : along with this program. If not, see <https://www.gnu.org/licenses/>. */
16 :
17 : /* Written by Paul Eggert. */
18 :
19 : /* Tell gcc not to warn about the long expressions that the overflow
20 : macros expand to, or about the (X < 0) expressions. */
21 : #if 4 < __GNUC__ + (3 <= __GNUC_MINOR__)
22 : # pragma GCC diagnostic ignored "-Woverlength-strings"
23 : # pragma GCC diagnostic ignored "-Wtype-limits"
24 :
25 : /* Work around a bug in GCC 6.1 and earlier; see:
26 : https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68971 */
27 : # pragma GCC diagnostic ignored "-Woverflow"
28 :
29 : #endif
30 :
31 : #include <config.h>
32 :
33 : #include "intprops.h"
34 : #include "verify.h"
35 :
36 : #include <stdbool.h>
37 : #include <inttypes.h>
38 : #include <limits.h>
39 :
40 : #include "macros.h"
41 :
42 : /* Compile-time verification of expression X.
43 : In this file, we need it as a statement, rather than as a declaration. */
44 : #define verify_stmt(x) do { verify (x); } while (0)
45 :
46 : /* VERIFY (X) uses a static assertion for compilers that are known to work,
47 : and falls back on a dynamic assertion for other compilers.
48 : These tests should be checkable via 'verify' rather than 'ASSERT', but
49 : using 'verify' would run into a bug with HP-UX 11.23 cc; see
50 : <https://lists.gnu.org/r/bug-gnulib/2011-05/msg00401.html>. */
51 : #if __GNUC__ || __SUNPRO_C
52 : # define VERIFY(x) verify_stmt (x)
53 : #else
54 : # define VERIFY(x) ASSERT (x)
55 : #endif
56 :
57 : #define DONTCARE __LINE__
58 :
59 : int int_minus_2 = -2;
60 : int int_1 = 1;
61 :
62 : int
63 1 : main (void)
64 : {
65 : /* Use VERIFY for tests that must be integer constant expressions,
66 : ASSERT otherwise. */
67 :
68 : /* TYPE_IS_INTEGER. */
69 : ASSERT (TYPE_IS_INTEGER (bool));
70 : ASSERT (TYPE_IS_INTEGER (char));
71 : ASSERT (TYPE_IS_INTEGER (signed char));
72 : ASSERT (TYPE_IS_INTEGER (unsigned char));
73 : ASSERT (TYPE_IS_INTEGER (short int));
74 : ASSERT (TYPE_IS_INTEGER (unsigned short int));
75 : ASSERT (TYPE_IS_INTEGER (int));
76 : ASSERT (TYPE_IS_INTEGER (unsigned int));
77 : ASSERT (TYPE_IS_INTEGER (long int));
78 : ASSERT (TYPE_IS_INTEGER (unsigned long int));
79 : ASSERT (TYPE_IS_INTEGER (intmax_t));
80 : ASSERT (TYPE_IS_INTEGER (uintmax_t));
81 : ASSERT (! TYPE_IS_INTEGER (float));
82 : ASSERT (! TYPE_IS_INTEGER (double));
83 : ASSERT (! TYPE_IS_INTEGER (long double));
84 :
85 : /* TYPE_SIGNED. */
86 : /* VERIFY (! TYPE_SIGNED (bool)); // not guaranteed by gnulib substitute */
87 : VERIFY (TYPE_SIGNED (signed char));
88 : VERIFY (! TYPE_SIGNED (unsigned char));
89 : VERIFY (TYPE_SIGNED (short int));
90 : VERIFY (! TYPE_SIGNED (unsigned short int));
91 : VERIFY (TYPE_SIGNED (int));
92 : VERIFY (! TYPE_SIGNED (unsigned int));
93 : VERIFY (TYPE_SIGNED (long int));
94 : VERIFY (! TYPE_SIGNED (unsigned long int));
95 : VERIFY (TYPE_SIGNED (intmax_t));
96 : VERIFY (! TYPE_SIGNED (uintmax_t));
97 : ASSERT (TYPE_SIGNED (float));
98 : ASSERT (TYPE_SIGNED (double));
99 : ASSERT (TYPE_SIGNED (long double));
100 :
101 : /* Integer representation. Check that it is two's complement. */
102 : VERIFY (INT_MIN + INT_MAX < 0);
103 :
104 : /* TYPE_MINIMUM, TYPE_MAXIMUM. */
105 : VERIFY (TYPE_MINIMUM (char) == CHAR_MIN);
106 : VERIFY (TYPE_MAXIMUM (char) == CHAR_MAX);
107 : VERIFY (TYPE_MINIMUM (unsigned char) == 0);
108 : VERIFY (TYPE_MAXIMUM (unsigned char) == UCHAR_MAX);
109 : VERIFY (TYPE_MINIMUM (signed char) == SCHAR_MIN);
110 : VERIFY (TYPE_MAXIMUM (signed char) == SCHAR_MAX);
111 : VERIFY (TYPE_MINIMUM (short int) == SHRT_MIN);
112 : VERIFY (TYPE_MAXIMUM (short int) == SHRT_MAX);
113 : VERIFY (TYPE_MINIMUM (unsigned short int) == 0);
114 : VERIFY (TYPE_MAXIMUM (unsigned short int) == USHRT_MAX);
115 : VERIFY (TYPE_MINIMUM (int) == INT_MIN);
116 : VERIFY (TYPE_MAXIMUM (int) == INT_MAX);
117 : VERIFY (TYPE_MINIMUM (unsigned int) == 0);
118 : VERIFY (TYPE_MAXIMUM (unsigned int) == UINT_MAX);
119 : VERIFY (TYPE_MINIMUM (long int) == LONG_MIN);
120 : VERIFY (TYPE_MAXIMUM (long int) == LONG_MAX);
121 : VERIFY (TYPE_MINIMUM (unsigned long int) == 0);
122 : VERIFY (TYPE_MAXIMUM (unsigned long int) == ULONG_MAX);
123 : #ifdef LLONG_MAX
124 : verify_stmt (TYPE_MINIMUM (long long int) == LLONG_MIN);
125 : verify_stmt (TYPE_MAXIMUM (long long int) == LLONG_MAX);
126 : verify_stmt (TYPE_MINIMUM (unsigned long long int) == 0);
127 : verify_stmt (TYPE_MAXIMUM (unsigned long long int) == ULLONG_MAX);
128 : #endif
129 : VERIFY (TYPE_MINIMUM (intmax_t) == INTMAX_MIN);
130 : VERIFY (TYPE_MAXIMUM (intmax_t) == INTMAX_MAX);
131 : VERIFY (TYPE_MINIMUM (uintmax_t) == 0);
132 : VERIFY (TYPE_MAXIMUM (uintmax_t) == UINTMAX_MAX);
133 :
134 : /* TYPE_WIDTH. */
135 : #ifdef CHAR_WIDTH
136 : verify_stmt (TYPE_WIDTH (char) == CHAR_WIDTH);
137 : verify_stmt (TYPE_WIDTH (signed char) == SCHAR_WIDTH);
138 : verify_stmt (TYPE_WIDTH (unsigned char) == UCHAR_WIDTH);
139 : verify_stmt (TYPE_WIDTH (short int) == SHRT_WIDTH);
140 : verify_stmt (TYPE_WIDTH (unsigned short int) == USHRT_WIDTH);
141 : verify_stmt (TYPE_WIDTH (int) == INT_WIDTH);
142 : verify_stmt (TYPE_WIDTH (unsigned int) == UINT_WIDTH);
143 : verify_stmt (TYPE_WIDTH (long int) == LONG_WIDTH);
144 : verify_stmt (TYPE_WIDTH (unsigned long int) == ULONG_WIDTH);
145 : #ifdef LLONG_WIDTH
146 : verify_stmt (TYPE_WIDTH (long long int) == LLONG_WIDTH);
147 : verify_stmt (TYPE_WIDTH (unsigned long long int) == ULLONG_WIDTH);
148 : #endif
149 : #endif
150 :
151 : /* INT_BITS_STRLEN_BOUND. */
152 : VERIFY (INT_BITS_STRLEN_BOUND (1) == 1);
153 : VERIFY (INT_BITS_STRLEN_BOUND (2620) == 789);
154 :
155 : /* INT_STRLEN_BOUND, INT_BUFSIZE_BOUND. */
156 : #ifdef INT32_MAX /* POSIX guarantees int32_t; this ports to non-POSIX. */
157 : VERIFY (INT_STRLEN_BOUND (int32_t) == sizeof ("-2147483648") - 1);
158 : VERIFY (INT_BUFSIZE_BOUND (int32_t) == sizeof ("-2147483648"));
159 : #endif
160 : #ifdef INT64_MAX
161 : VERIFY (INT_STRLEN_BOUND (int64_t) == sizeof ("-9223372036854775808") - 1);
162 : VERIFY (INT_BUFSIZE_BOUND (int64_t) == sizeof ("-9223372036854775808"));
163 : #endif
164 :
165 : /* All the INT_<op>_RANGE_OVERFLOW tests are equally valid as
166 : INT_<op>_OVERFLOW tests, so define macros to do both. OP is the
167 : operation, OPNAME its symbolic name, A and B its operands, T the
168 : result type, V the overflow flag, and VRES the result if V and if
169 : two's complement. CHECK_BINOP is for most binary operatinos,
170 : CHECK_SBINOP for binary +, -, * when the result type is signed,
171 : and CHECK_UNOP for unary operations. */
172 : #define CHECK_BINOP(op, opname, a, b, t, v, vres) \
173 : VERIFY (INT_##opname##_RANGE_OVERFLOW (a, b, TYPE_MINIMUM (t), \
174 : TYPE_MAXIMUM (t)) \
175 : == (v)); \
176 : VERIFY (INT_##opname##_OVERFLOW (a, b) == (v))
177 : #define CHECK_SBINOP(op, opname, a, b, t, v, vres) \
178 : CHECK_BINOP(op, opname, a, b, t, v, vres); \
179 : { \
180 : t result; \
181 : ASSERT (INT_##opname##_WRAPV (a, b, &result) == (v)); \
182 : ASSERT (result == ((v) ? (vres) : ((a) op (b)))); \
183 : }
184 : #define CHECK_UNOP(op, opname, a, t, v) \
185 : VERIFY (INT_##opname##_RANGE_OVERFLOW (a, TYPE_MINIMUM (t), \
186 : TYPE_MAXIMUM (t)) \
187 : == (v)); \
188 : VERIFY (INT_##opname##_OVERFLOW (a) == (v))
189 :
190 : /* INT_<op>_RANGE_OVERFLOW, INT_<op>_OVERFLOW. */
191 : VERIFY (INT_ADD_RANGE_OVERFLOW (INT_MAX, 1, INT_MIN, INT_MAX));
192 : VERIFY (INT_ADD_OVERFLOW (INT_MAX, 1));
193 :
194 1 : CHECK_SBINOP (+, ADD, INT_MAX, 1, int, true, INT_MIN);
195 1 : CHECK_SBINOP (+, ADD, INT_MAX, -1, int, false, INT_MAX - 1);
196 1 : CHECK_SBINOP (+, ADD, INT_MIN, 1, int, false, INT_MIN + 1);
197 1 : CHECK_SBINOP (+, ADD, INT_MIN, -1, int, true, INT_MAX);
198 : CHECK_BINOP (+, ADD, UINT_MAX, 1u, unsigned int, true, 0u);
199 : CHECK_BINOP (+, ADD, 0u, 1u, unsigned int, false, 1u);
200 :
201 1 : CHECK_SBINOP (-, SUBTRACT, INT_MAX, 1, int, false, INT_MAX - 1);
202 1 : CHECK_SBINOP (-, SUBTRACT, INT_MAX, -1, int, true, INT_MIN);
203 1 : CHECK_SBINOP (-, SUBTRACT, INT_MIN, 1, int, true, INT_MAX);
204 1 : CHECK_SBINOP (-, SUBTRACT, INT_MIN, -1, int, false, INT_MIN - -1);
205 : CHECK_BINOP (-, SUBTRACT, UINT_MAX, 1u, unsigned int, false, UINT_MAX - 1u);
206 : CHECK_BINOP (-, SUBTRACT, 0u, 1u, unsigned int, true, 0u - 1u);
207 :
208 : CHECK_UNOP (-, NEGATE, INT_MIN, int, true);
209 : CHECK_UNOP (-, NEGATE, 0, int, false);
210 : CHECK_UNOP (-, NEGATE, INT_MAX, int, false);
211 : CHECK_UNOP (-, NEGATE, 0u, unsigned int, false);
212 : CHECK_UNOP (-, NEGATE, 1u, unsigned int, true);
213 : CHECK_UNOP (-, NEGATE, UINT_MAX, unsigned int, true);
214 :
215 1 : CHECK_SBINOP (*, MULTIPLY, INT_MAX, INT_MAX, int, true, 1);
216 1 : CHECK_SBINOP (*, MULTIPLY, INT_MAX, INT_MIN, int, true, INT_MIN);
217 1 : CHECK_SBINOP (*, MULTIPLY, INT_MIN, INT_MAX, int, true, INT_MIN);
218 1 : CHECK_SBINOP (*, MULTIPLY, INT_MIN, INT_MIN, int, true, 0);
219 1 : CHECK_SBINOP (*, MULTIPLY, -1, INT_MIN, int,
220 : INT_NEGATE_OVERFLOW (INT_MIN), INT_MIN);
221 : #if !defined __HP_cc
222 1 : CHECK_SBINOP (*, MULTIPLY, LONG_MIN / INT_MAX, (long int) INT_MAX,
223 : long int, false, LONG_MIN - LONG_MIN % INT_MAX);
224 : #endif
225 :
226 : CHECK_BINOP (/, DIVIDE, INT_MIN, -1, int,
227 : INT_NEGATE_OVERFLOW (INT_MIN), INT_MIN);
228 : CHECK_BINOP (/, DIVIDE, INT_MAX, 1, int, false, INT_MAX);
229 : CHECK_BINOP (/, DIVIDE, (unsigned int) INT_MIN, -1u, unsigned int,
230 : false, INT_MIN / -1u);
231 :
232 : CHECK_BINOP (%, REMAINDER, INT_MIN, -1, int, INT_NEGATE_OVERFLOW (INT_MIN), 0);
233 : CHECK_BINOP (%, REMAINDER, INT_MAX, 1, int, false, 0);
234 : CHECK_BINOP (%, REMAINDER, (unsigned int) INT_MIN, -1u, unsigned int,
235 : false, INT_MIN % -1u);
236 :
237 : CHECK_BINOP (<<, LEFT_SHIFT, UINT_MAX, 1, unsigned int, true, UINT_MAX << 1);
238 : CHECK_BINOP (<<, LEFT_SHIFT, UINT_MAX / 2 + 1, 1, unsigned int, true,
239 : (UINT_MAX / 2 + 1) << 1);
240 : CHECK_BINOP (<<, LEFT_SHIFT, UINT_MAX / 2, 1, unsigned int, false,
241 : (UINT_MAX / 2) << 1);
242 :
243 : /* INT_<op>_OVERFLOW and INT_<op>_WRAPV with mixed types. */
244 : #define CHECK_SUM(a, b, t, v, vres) \
245 : CHECK_SUM1 (a, b, t, v, vres); \
246 : CHECK_SUM1 (b, a, t, v, vres)
247 : #define CHECK_SUM_WRAPV(a, b, t, v, vres, okres) \
248 : CHECK_SUM_WRAPV1 (a, b, t, v, vres, okres); \
249 : CHECK_SUM_WRAPV1 (b, a, t, v, vres, okres)
250 : #define CHECK_SUM1(a, b, t, v, vres) \
251 : VERIFY (INT_ADD_OVERFLOW (a, b) == (v)); \
252 : CHECK_SUM_WRAPV1 (a, b, t, v, vres, (a) + (b))
253 : #define CHECK_SUM_WRAPV1(a, b, t, v, vres, okres) \
254 : { \
255 : t result; \
256 : ASSERT (INT_ADD_WRAPV (a, b, &result) == (v)); \
257 : ASSERT (result == ((v) ? (vres) : (okres))); \
258 : }
259 1 : CHECK_SUM (-1, LONG_MIN, long int, true, LONG_MAX);
260 1 : CHECK_SUM (-1, UINT_MAX, unsigned int, false, DONTCARE);
261 1 : CHECK_SUM (-1L, INT_MIN, long int, INT_MIN == LONG_MIN,
262 : INT_MIN == LONG_MIN ? INT_MAX : DONTCARE);
263 1 : CHECK_SUM (0u, -1, unsigned int, true, 0u + -1);
264 1 : CHECK_SUM (0u, 0, unsigned int, false, DONTCARE);
265 1 : CHECK_SUM (0u, 1, unsigned int, false, DONTCARE);
266 1 : CHECK_SUM (1, LONG_MAX, long int, true, LONG_MIN);
267 1 : CHECK_SUM (1, UINT_MAX, unsigned int, true, 0u);
268 1 : CHECK_SUM (1L, INT_MAX, long int, INT_MAX == LONG_MAX,
269 : INT_MAX == LONG_MAX ? INT_MIN : DONTCARE);
270 1 : CHECK_SUM (1u, INT_MAX, unsigned int, INT_MAX == UINT_MAX, 1u + INT_MAX);
271 1 : CHECK_SUM (1u, INT_MIN, unsigned int, true, 1u + INT_MIN);
272 1 : CHECK_SUM_WRAPV (-1, 1u, int, false, DONTCARE, 0);
273 1 : CHECK_SUM_WRAPV (-1, 1ul, int, false, DONTCARE, 0);
274 1 : CHECK_SUM_WRAPV (-1l, 1u, int, false, DONTCARE, 0);
275 1 : CHECK_SUM_WRAPV (-100, 1000u, int, false, DONTCARE, 900);
276 1 : CHECK_SUM_WRAPV (INT_MIN, UINT_MAX, int, false, DONTCARE, INT_MAX);
277 1 : CHECK_SUM_WRAPV (1u, INT_MAX, int, true, INT_MIN, DONTCARE);
278 1 : CHECK_SUM_WRAPV (INT_MAX, 1, long int, LONG_MAX <= INT_MAX, INT_MIN,
279 : INT_MAX + 1L);
280 1 : CHECK_SUM_WRAPV (UINT_MAX, 1, long int, LONG_MAX <= UINT_MAX, 0,
281 : UINT_MAX + 1L);
282 1 : CHECK_SUM_WRAPV (INT_MAX, 1, unsigned long int, ULONG_MAX <= INT_MAX, 0,
283 : INT_MAX + 1uL);
284 1 : CHECK_SUM_WRAPV (UINT_MAX, 1, unsigned long int, ULONG_MAX <= UINT_MAX, 0,
285 : UINT_MAX + 1uL);
286 :
287 : {
288 : long int result;
289 1 : ASSERT (INT_ADD_WRAPV (1, INT_MAX, &result) == (INT_MAX == LONG_MAX));
290 1 : ASSERT (INT_ADD_WRAPV (-1, INT_MIN, &result) == (INT_MIN == LONG_MIN));
291 : }
292 :
293 : #define CHECK_DIFFERENCE(a, b, t, v, vres) \
294 : VERIFY (INT_SUBTRACT_OVERFLOW (a, b) == (v))
295 : #define CHECK_SDIFFERENCE(a, b, t, v, vres) \
296 : CHECK_DIFFERENCE (a, b, t, v, vres); \
297 : CHECK_SDIFFERENCE_WRAPV (a, b, t, v, vres)
298 : #define CHECK_SDIFFERENCE_WRAPV(a, b, t, v, vres) \
299 : { \
300 : t result; \
301 : ASSERT (INT_SUBTRACT_WRAPV (a, b, &result) == (v)); \
302 : ASSERT (result == ((v) ? (vres) : ((a) - (b)))); \
303 : }
304 : CHECK_DIFFERENCE (INT_MAX, 1u, unsigned int, UINT_MAX < INT_MAX - 1,
305 : INT_MAX - 1u);
306 : CHECK_DIFFERENCE (UINT_MAX, 1, unsigned int, false, UINT_MAX - 1);
307 : CHECK_DIFFERENCE (0u, -1, unsigned int, false, 0u - -1);
308 : CHECK_DIFFERENCE (UINT_MAX, -1, unsigned int, true, UINT_MAX - -1);
309 : CHECK_DIFFERENCE (INT_MIN, 1u, unsigned int, true, INT_MIN - 1u);
310 : CHECK_DIFFERENCE (-1, 0u, unsigned int, true, -1 - 0u);
311 1 : CHECK_SDIFFERENCE (-1, INT_MIN, int, false, -1 - INT_MIN);
312 1 : CHECK_SDIFFERENCE (-1, INT_MAX, int, false, -1 - INT_MAX);
313 1 : CHECK_SDIFFERENCE (0, INT_MIN, int, INT_MIN < -INT_MAX, INT_MIN);
314 1 : CHECK_SDIFFERENCE (0, INT_MAX, int, false, 0 - INT_MAX);
315 1 : CHECK_SDIFFERENCE_WRAPV (-1, 1u, int, false, DONTCARE);
316 1 : CHECK_SDIFFERENCE_WRAPV (-1, 1ul, int, false, DONTCARE);
317 1 : CHECK_SDIFFERENCE_WRAPV (-1l, 1u, int, false, DONTCARE);
318 1 : CHECK_SDIFFERENCE_WRAPV (0u, INT_MAX, int, false, DONTCARE);
319 1 : CHECK_SDIFFERENCE_WRAPV (1u, INT_MIN, int, true, 1u - INT_MIN);
320 : {
321 : long int result;
322 1 : ASSERT (INT_SUBTRACT_WRAPV (INT_MAX, -1, &result) == (INT_MAX == LONG_MAX));
323 1 : ASSERT (INT_SUBTRACT_WRAPV (INT_MIN, 1, &result) == (INT_MAX == LONG_MAX));
324 : }
325 :
326 : #define CHECK_PRODUCT(a, b, t, v, vres) \
327 : CHECK_PRODUCT1 (a, b, t, v, vres); \
328 : CHECK_PRODUCT1 (b, a, t, v, vres)
329 : #define CHECK_SPRODUCT(a, b, t, v, vres) \
330 : CHECK_SPRODUCT1 (a, b, t, v, vres); \
331 : CHECK_SPRODUCT1 (b, a, t, v, vres)
332 : #define CHECK_SPRODUCT_WRAPV(a, b, t, v, vres) \
333 : CHECK_SPRODUCT_WRAPV1 (a, b, t, v, vres); \
334 : CHECK_SPRODUCT_WRAPV1 (b, a, t, v, vres)
335 : #define CHECK_PRODUCT1(a, b, t, v, vres) \
336 : VERIFY (INT_MULTIPLY_OVERFLOW (a, b) == (v))
337 : #define CHECK_SPRODUCT1(a, b, t, v, vres) \
338 : CHECK_PRODUCT1 (a, b, t, v, vres); \
339 : CHECK_SPRODUCT_WRAPV1 (a, b, t, v, vres)
340 : #define CHECK_SPRODUCT_WRAPV1(a, b, t, v, vres) \
341 : { \
342 : t result; \
343 : ASSERT (INT_MULTIPLY_WRAPV (a, b, &result) == (v)); \
344 : ASSERT (result == ((v) ? (vres) : ((a) * (b)))); \
345 : }
346 : CHECK_PRODUCT (-1, 1u, unsigned int, true, -1 * 1u);
347 1 : CHECK_SPRODUCT (-1, INT_MIN, int, INT_NEGATE_OVERFLOW (INT_MIN), INT_MIN);
348 : CHECK_PRODUCT (-1, UINT_MAX, unsigned int, true, -1 * UINT_MAX);
349 1 : CHECK_SPRODUCT (-32768, LONG_MAX / -32768 - 1, long int, true, LONG_MIN);
350 1 : CHECK_SPRODUCT (-12345, LONG_MAX / -12345, long int, false, DONTCARE);
351 1 : CHECK_SPRODUCT (0, -1, int, false, DONTCARE);
352 1 : CHECK_SPRODUCT (0, 0, int, false, DONTCARE);
353 : CHECK_PRODUCT (0, 0u, unsigned int, false, DONTCARE);
354 1 : CHECK_SPRODUCT (0, 1, int, false, DONTCARE);
355 1 : CHECK_SPRODUCT (0, INT_MAX, int, false, DONTCARE);
356 1 : CHECK_SPRODUCT (0, INT_MIN, int, false, DONTCARE);
357 : CHECK_PRODUCT (0, UINT_MAX, unsigned int, false, DONTCARE);
358 : CHECK_PRODUCT (0u, -1, unsigned int, false, DONTCARE);
359 : CHECK_PRODUCT (0u, 0, unsigned int, false, DONTCARE);
360 : CHECK_PRODUCT (0u, 0u, unsigned int, false, DONTCARE);
361 : CHECK_PRODUCT (0u, 1, unsigned int, false, DONTCARE);
362 : CHECK_PRODUCT (0u, INT_MAX, unsigned int, false, DONTCARE);
363 : CHECK_PRODUCT (0u, INT_MIN, unsigned int, false, DONTCARE);
364 : CHECK_PRODUCT (0u, UINT_MAX, unsigned int, false, DONTCARE);
365 1 : CHECK_SPRODUCT (1, INT_MAX, int, false, DONTCARE);
366 1 : CHECK_SPRODUCT (1, INT_MIN, int, false, DONTCARE);
367 : CHECK_PRODUCT (1, UINT_MAX, unsigned int, false, DONTCARE);
368 : CHECK_PRODUCT (1u, INT_MIN, unsigned int, true, 1u * INT_MIN);
369 : CHECK_PRODUCT (1u, INT_MAX, unsigned int, UINT_MAX < INT_MAX, 1u * INT_MAX);
370 : CHECK_PRODUCT (INT_MAX, UINT_MAX, unsigned int, true, INT_MAX * UINT_MAX);
371 : CHECK_PRODUCT (INT_MAX, ULONG_MAX, unsigned long int, true,
372 : INT_MAX * ULONG_MAX);
373 : #if !defined __HP_cc
374 1 : CHECK_SPRODUCT (INT_MIN, LONG_MAX / INT_MIN - 1, long int, true, LONG_MIN);
375 1 : CHECK_SPRODUCT (INT_MIN, LONG_MAX / INT_MIN, long int, false, DONTCARE);
376 : #endif
377 : CHECK_PRODUCT (INT_MIN, UINT_MAX, unsigned int, true, INT_MIN * UINT_MAX);
378 : CHECK_PRODUCT (INT_MIN, ULONG_MAX, unsigned long int, true,
379 : INT_MIN * ULONG_MAX);
380 1 : CHECK_SPRODUCT_WRAPV (-1, INT_MAX + 1u, int, false, DONTCARE);
381 1 : CHECK_SPRODUCT_WRAPV (-1, 1u, int, false, DONTCARE);
382 1 : CHECK_SPRODUCT (0, ULONG_MAX, int, false, DONTCARE);
383 1 : CHECK_SPRODUCT (0u, LONG_MIN, int, false, DONTCARE);
384 : {
385 : long int result;
386 1 : ASSERT (INT_MULTIPLY_WRAPV (INT_MAX, INT_MAX, &result)
387 : == (LONG_MAX / INT_MAX < INT_MAX));
388 1 : ASSERT (INT_MULTIPLY_WRAPV (INT_MAX, INT_MAX, &result)
389 : || result == INT_MAX * (long int) INT_MAX);
390 1 : ASSERT (INT_MULTIPLY_WRAPV (INT_MIN, INT_MIN, &result)
391 : || result == INT_MIN * (long int) INT_MIN);
392 : }
393 :
394 : # ifdef LLONG_MAX
395 : {
396 : long long int result;
397 1 : ASSERT (INT_MULTIPLY_WRAPV (LONG_MAX, LONG_MAX, &result)
398 : == (LLONG_MAX / LONG_MAX < LONG_MAX));
399 1 : ASSERT (INT_MULTIPLY_WRAPV (LONG_MAX, LONG_MAX, &result)
400 : || result == LONG_MAX * (long long int) LONG_MAX);
401 1 : ASSERT (INT_MULTIPLY_WRAPV (LONG_MIN, LONG_MIN, &result)
402 : || result == LONG_MIN * (long long int) LONG_MIN);
403 : }
404 : # endif
405 :
406 : /* Check for GCC bug 91450. */
407 : {
408 : unsigned long long result;
409 1 : ASSERT (INT_MULTIPLY_WRAPV (int_minus_2, int_1, &result) && result == -2);
410 : }
411 :
412 : #define CHECK_QUOTIENT(a, b, v) VERIFY (INT_DIVIDE_OVERFLOW (a, b) == (v))
413 :
414 : CHECK_QUOTIENT (INT_MIN, -1L, INT_MIN == LONG_MIN);
415 : CHECK_QUOTIENT (INT_MIN, UINT_MAX, false);
416 : CHECK_QUOTIENT (INTMAX_MIN, UINTMAX_MAX, false);
417 : CHECK_QUOTIENT (INTMAX_MIN, UINT_MAX, false);
418 : CHECK_QUOTIENT (-11, 10u, true);
419 : CHECK_QUOTIENT (-10, 10u, true);
420 : CHECK_QUOTIENT (-9, 10u, false);
421 : CHECK_QUOTIENT (11u, -10, true);
422 : CHECK_QUOTIENT (10u, -10, true);
423 : CHECK_QUOTIENT (9u, -10, false);
424 :
425 : #define CHECK_REMAINDER(a, b, v) VERIFY (INT_REMAINDER_OVERFLOW (a, b) == (v))
426 :
427 : CHECK_REMAINDER (INT_MIN, -1L, INT_MIN == LONG_MIN);
428 : CHECK_REMAINDER (-1, UINT_MAX, true);
429 : CHECK_REMAINDER ((intmax_t) -1, UINTMAX_MAX, true);
430 : CHECK_REMAINDER (INTMAX_MIN, UINT_MAX,
431 : (INTMAX_MAX < UINT_MAX
432 : && - (unsigned int) INTMAX_MIN % UINT_MAX != 0));
433 : CHECK_REMAINDER (INT_MIN, ULONG_MAX, INT_MIN % ULONG_MAX != 1);
434 : CHECK_REMAINDER (1u, -1, false);
435 : CHECK_REMAINDER (37*39u, -39, false);
436 : CHECK_REMAINDER (37*39u + 1, -39, true);
437 : CHECK_REMAINDER (37*39u - 1, -39, true);
438 : CHECK_REMAINDER (LONG_MAX, -INT_MAX, false);
439 :
440 1 : return 0;
441 : }
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