2 Copyright (C) 2011 Free Software Foundation, Inc.
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.
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.
14 You should have received a copy of the GNU General Public License
15 along with this program. If not, see <http://www.gnu.org/licenses/>. */
17 /* Written by Paul Eggert. */
29 /* Work around compiler bugs in HP-UX 11.23 cc, IRIX 6.5 cc, OSF/1 5.1
30 cc, and Solaris 9 cc. See
31 <http://lists.gnu.org/archive/html/bug-gnulib/2011-05/msg00401.html>. */
35 #define UINT_MAX ((unsigned int) -1)
36 #define ULONG_MAX ((unsigned long int) -1)
37 #define UINTMAX_MAX ((uintmax_t) -1)
38 #define U0 ((unsigned int) 0)
39 #define U1 ((unsigned int) 1)
41 /* Integer representation. */
42 verify (INT_MIN + INT_MAX < 0
43 ? (TYPE_TWOS_COMPLEMENT (int)
44 && ! TYPE_ONES_COMPLEMENT (int) && ! TYPE_SIGNED_MAGNITUDE (int))
45 : (! TYPE_TWOS_COMPLEMENT (int)
46 && (TYPE_ONES_COMPLEMENT (int) || TYPE_SIGNED_MAGNITUDE (int))));
49 /* verify (! TYPE_SIGNED (bool)); */ /* not guaranteed by gnulib substitute */
50 verify (TYPE_SIGNED (signed char));
51 verify (! TYPE_SIGNED (unsigned char));
52 verify (TYPE_SIGNED (short int));
53 verify (! TYPE_SIGNED (unsigned short int));
54 verify (TYPE_SIGNED (int));
55 verify (! TYPE_SIGNED (unsigned int));
56 verify (TYPE_SIGNED (long int));
57 verify (! TYPE_SIGNED (unsigned long int));
58 verify (TYPE_SIGNED (intmax_t));
59 verify (! TYPE_SIGNED (uintmax_t));
61 /* TYPE_MINIMUM, TYPE_MAXIMUM. */
62 verify (TYPE_MINIMUM (char) == CHAR_MIN);
63 verify (TYPE_MAXIMUM (char) == CHAR_MAX);
64 verify (TYPE_MINIMUM (unsigned char) == 0);
65 verify (TYPE_MAXIMUM (unsigned char) == UCHAR_MAX);
66 verify (TYPE_MINIMUM (signed char) == SCHAR_MIN);
67 verify (TYPE_MAXIMUM (signed char) == SCHAR_MAX);
68 verify (TYPE_MINIMUM (short int) == SHRT_MIN);
69 verify (TYPE_MAXIMUM (short int) == SHRT_MAX);
70 verify (TYPE_MINIMUM (unsigned short int) == 0);
71 verify (TYPE_MAXIMUM (unsigned short int) == USHRT_MAX);
72 verify (TYPE_MINIMUM (int) == INT_MIN);
73 verify (TYPE_MAXIMUM (int) == INT_MAX);
74 verify (TYPE_MINIMUM (unsigned int) == 0);
75 verify (TYPE_MAXIMUM (unsigned int) == UINT_MAX);
76 verify (TYPE_MINIMUM (long int) == LONG_MIN);
77 verify (TYPE_MAXIMUM (long int) == LONG_MAX);
78 verify (TYPE_MINIMUM (unsigned long int) == 0);
79 verify (TYPE_MAXIMUM (unsigned long int) == ULONG_MAX);
80 verify (TYPE_MINIMUM (intmax_t) == INTMAX_MIN);
81 verify (TYPE_MAXIMUM (intmax_t) == INTMAX_MAX);
82 verify (TYPE_MINIMUM (uintmax_t) == 0);
83 verify (TYPE_MAXIMUM (uintmax_t) == UINTMAX_MAX);
85 /* INT_BITS_STRLEN_BOUND. */
86 verify (INT_BITS_STRLEN_BOUND (1) == 1);
87 verify (INT_BITS_STRLEN_BOUND (2620) == 789);
89 /* INT_STRLEN_BOUND, INT_BUFSIZE_BOUND. */
90 #ifdef INT32_MAX /* POSIX guarantees int32_t; this ports to non-POSIX hosts */
91 verify (INT_STRLEN_BOUND (int32_t) == sizeof ("-2147483648") - 1);
92 verify (INT_BUFSIZE_BOUND (int32_t) == sizeof ("-2147483648"));
95 verify (INT_STRLEN_BOUND (int64_t) == sizeof ("-9223372036854775808") - 1);
96 verify (INT_BUFSIZE_BOUND (int64_t) == sizeof ("-9223372036854775808"));
99 /* All the INT_<op>_RANGE_OVERFLOW tests are equally valid as
100 INT_<op>_OVERFLOW tests, so define a single macro to do both. */
101 #define check_binop(op, a, b, min, max, overflow) \
102 (INT_##op##_RANGE_OVERFLOW (a, b, min, max) == (overflow) \
103 && INT_##op##_OVERFLOW (a, b) == (overflow))
104 #define check_unop(op, a, min, max, overflow) \
105 (INT_##op##_RANGE_OVERFLOW (a, min, max) == (overflow) \
106 && INT_##op##_OVERFLOW (a) == (overflow))
108 /* INT_<op>_RANGE_OVERFLOW, INT_<op>_OVERFLOW. */
109 verify (INT_ADD_RANGE_OVERFLOW (INT_MAX, 1, INT_MIN, INT_MAX));
110 verify (INT_ADD_OVERFLOW (INT_MAX, 1));
111 verify (check_binop (ADD, INT_MAX, 1, INT_MIN, INT_MAX, true));
112 verify (check_binop (ADD, INT_MAX, -1, INT_MIN, INT_MAX, false));
113 verify (check_binop (ADD, INT_MIN, 1, INT_MIN, INT_MAX, false));
114 verify (check_binop (ADD, INT_MIN, -1, INT_MIN, INT_MAX, true));
115 verify (check_binop (ADD, UINT_MAX, U1, U0, UINT_MAX, true));
116 verify (check_binop (ADD, U0, U1, U0, UINT_MAX, false));
118 verify (check_binop (SUBTRACT, INT_MAX, 1, INT_MIN, INT_MAX, false));
119 verify (check_binop (SUBTRACT, INT_MAX, -1, INT_MIN, INT_MAX, true));
120 verify (check_binop (SUBTRACT, INT_MIN, 1, INT_MIN, INT_MAX, true));
121 verify (check_binop (SUBTRACT, INT_MIN, -1, INT_MIN, INT_MAX, false));
122 verify (check_binop (SUBTRACT, UINT_MAX, U1, U0, UINT_MAX, false));
123 verify (check_binop (SUBTRACT, U0, U1, U0, UINT_MAX, true));
125 verify (check_unop (NEGATE, INT_MIN, INT_MIN, INT_MAX,
126 TYPE_TWOS_COMPLEMENT (int)));
127 verify (check_unop (NEGATE, 0, INT_MIN, INT_MAX, false));
128 verify (check_unop (NEGATE, INT_MAX, INT_MIN, INT_MAX, false));
129 verify (check_unop (NEGATE, U0, U0, UINT_MAX, false));
130 verify (check_unop (NEGATE, U1, U0, UINT_MAX, true));
131 verify (check_unop (NEGATE, UINT_MAX, U0, UINT_MAX, true));
133 verify (check_binop (MULTIPLY, INT_MAX, INT_MAX, INT_MIN, INT_MAX, true));
134 verify (check_binop (MULTIPLY, INT_MAX, INT_MIN, INT_MIN, INT_MAX, true));
135 verify (check_binop (MULTIPLY, INT_MIN, INT_MAX, INT_MIN, INT_MAX, true));
136 verify (check_binop (MULTIPLY, INT_MIN, INT_MIN, INT_MIN, INT_MAX, true));
137 verify (check_binop (MULTIPLY, -1, INT_MIN, INT_MIN, INT_MAX,
138 INT_NEGATE_OVERFLOW (INT_MIN)));
139 verify (check_binop (MULTIPLY, LONG_MIN / INT_MAX, (long int) INT_MAX,
140 LONG_MIN, LONG_MIN, false));
142 verify (check_binop (DIVIDE, INT_MIN, -1, INT_MIN, INT_MAX,
143 INT_NEGATE_OVERFLOW (INT_MIN)));
144 verify (check_binop (DIVIDE, INT_MAX, 1, INT_MIN, INT_MAX, false));
145 verify (check_binop (DIVIDE, (unsigned int) INT_MIN,
146 -U1, U0, UINT_MAX, false));
148 verify (check_binop (REMAINDER, INT_MIN, -1, INT_MIN, INT_MAX,
149 INT_NEGATE_OVERFLOW (INT_MIN)));
150 verify (check_binop (REMAINDER, INT_MAX, 1, INT_MIN, INT_MAX, false));
151 verify (check_binop (REMAINDER, (unsigned int) INT_MIN,
152 -U1, U0, UINT_MAX, false));
154 verify (check_binop (LEFT_SHIFT, UINT_MAX, 1, U0, UINT_MAX, true));
155 verify (check_binop (LEFT_SHIFT, UINT_MAX / 2 + 1, 1, U0, UINT_MAX, true));
156 verify (check_binop (LEFT_SHIFT, UINT_MAX / 2, 1, U0, UINT_MAX, false));
158 /* INT_<op>_OVERFLOW with mixed types. */
159 #define check_sum(a, b, overflow) \
160 verify (INT_ADD_OVERFLOW (a, b) == (overflow)); \
161 verify (INT_ADD_OVERFLOW (b, a) == (overflow))
162 check_sum (-1, LONG_MIN, true);
163 check_sum (-1, UINT_MAX, false);
164 check_sum (- (long) 1, INT_MIN, INT_MIN == LONG_MIN);
165 check_sum (U0, -1, true);
166 check_sum (U0, 0, false);
167 check_sum (U0, 1, false);
168 check_sum (1, LONG_MAX, true);
169 check_sum (1, UINT_MAX, true);
170 check_sum ((long) 1, INT_MAX, INT_MAX == LONG_MAX);
171 check_sum (U1, INT_MAX, INT_MAX == UINT_MAX);
172 check_sum (U1, INT_MIN, true);
174 verify (! INT_SUBTRACT_OVERFLOW (INT_MAX, U1));
175 verify (! INT_SUBTRACT_OVERFLOW (UINT_MAX, 1));
176 verify (! INT_SUBTRACT_OVERFLOW (U0, -1));
177 verify (INT_SUBTRACT_OVERFLOW (UINT_MAX, -1));
178 verify (INT_SUBTRACT_OVERFLOW (INT_MIN, U1));
179 verify (INT_SUBTRACT_OVERFLOW (-1, U0));
181 #define check_product(a, b, overflow) \
182 verify (INT_MULTIPLY_OVERFLOW (a, b) == (overflow)); \
183 verify (INT_MULTIPLY_OVERFLOW (b, a) == (overflow))
185 check_product (-1, U1, true);
186 check_product (-1, INT_MIN, INT_NEGATE_OVERFLOW (INT_MIN));
187 check_product (-1, UINT_MAX, true);
188 check_product (-12345, LONG_MAX / -12345 - 1, true);
189 check_product (-12345, LONG_MAX / -12345, false);
190 check_product (0, -1, false);
191 check_product (0, 0, false);
192 check_product (0, U0, false);
193 check_product (0, 1, false);
194 check_product (0, INT_MAX, false);
195 check_product (0, INT_MIN, false);
196 check_product (0, UINT_MAX, false);
197 check_product (U0, -1, false);
198 check_product (U0, 0, false);
199 check_product (U0, U0, false);
200 check_product (U0, 1, false);
201 check_product (U0, INT_MAX, false);
202 check_product (U0, INT_MIN, false);
203 check_product (U0, UINT_MAX, false);
204 check_product (1, INT_MAX, false);
205 check_product (1, INT_MIN, false);
206 check_product (1, UINT_MAX, false);
207 check_product (U1, INT_MIN, true);
208 check_product (U1, INT_MAX, UINT_MAX < INT_MAX);
209 check_product (INT_MAX, UINT_MAX, true);
210 check_product (INT_MAX, ULONG_MAX, true);
211 check_product (INT_MIN, LONG_MAX / INT_MIN - 1, true);
212 check_product (INT_MIN, LONG_MAX / INT_MIN, false);
213 check_product (INT_MIN, UINT_MAX, true);
214 check_product (INT_MIN, ULONG_MAX, true);
216 verify (INT_DIVIDE_OVERFLOW (INT_MIN, - (long) 1)
217 == (TYPE_TWOS_COMPLEMENT (long int) && INT_MIN == LONG_MIN));
218 verify (! INT_DIVIDE_OVERFLOW (INT_MIN, UINT_MAX));
219 verify (! INT_DIVIDE_OVERFLOW (INTMAX_MIN, UINTMAX_MAX));
220 verify (! INT_DIVIDE_OVERFLOW (INTMAX_MIN, UINT_MAX));
221 verify (INT_DIVIDE_OVERFLOW (-11, (unsigned int) 10));
222 verify (INT_DIVIDE_OVERFLOW (-10, (unsigned int) 10));
223 verify (! INT_DIVIDE_OVERFLOW (-9, (unsigned int) 10));
224 verify (INT_DIVIDE_OVERFLOW ((unsigned int) 11, -10));
225 verify (INT_DIVIDE_OVERFLOW ((unsigned int) 10, -10));
226 verify (! INT_DIVIDE_OVERFLOW (9u, -10));
228 verify (INT_REMAINDER_OVERFLOW (INT_MIN, - (long) 1)
229 == (TYPE_TWOS_COMPLEMENT (long int) && INT_MIN == LONG_MIN));
230 verify (INT_REMAINDER_OVERFLOW (-1, UINT_MAX));
231 verify (INT_REMAINDER_OVERFLOW ((intmax_t) -1, UINTMAX_MAX));
232 verify (INT_REMAINDER_OVERFLOW (INTMAX_MIN, UINT_MAX)
233 == (INTMAX_MAX < UINT_MAX
234 && - (unsigned int) INTMAX_MIN % UINT_MAX != 0));
235 verify (INT_REMAINDER_OVERFLOW (INT_MIN, ULONG_MAX)
236 == (INT_MIN % ULONG_MAX != 1));
237 verify (! INT_REMAINDER_OVERFLOW (U1, -1));
238 verify (! INT_REMAINDER_OVERFLOW (37 * (unsigned int) 39, -39));
239 verify (INT_REMAINDER_OVERFLOW (37 * (unsigned int) 39 + 1, -39));
240 verify (INT_REMAINDER_OVERFLOW (37 * (unsigned int) 39 - 1, -39));
241 verify (! INT_REMAINDER_OVERFLOW (LONG_MAX, -INT_MAX));
246 /* Test expressions that might not be integer constant expressions. */
248 /* TYPE_IS_INTEGER. */
249 ASSERT (TYPE_IS_INTEGER (bool));
250 ASSERT (TYPE_IS_INTEGER (char));
251 ASSERT (TYPE_IS_INTEGER (signed char));
252 ASSERT (TYPE_IS_INTEGER (unsigned char));
253 ASSERT (TYPE_IS_INTEGER (short int));
254 ASSERT (TYPE_IS_INTEGER (unsigned short int));
255 ASSERT (TYPE_IS_INTEGER (int));
256 ASSERT (TYPE_IS_INTEGER (unsigned int));
257 ASSERT (TYPE_IS_INTEGER (long int));
258 ASSERT (TYPE_IS_INTEGER (unsigned long int));
259 ASSERT (TYPE_IS_INTEGER (intmax_t));
260 ASSERT (TYPE_IS_INTEGER (uintmax_t));
261 ASSERT (! TYPE_IS_INTEGER (float));
262 ASSERT (! TYPE_IS_INTEGER (double));
263 ASSERT (! TYPE_IS_INTEGER (long double));
266 ASSERT (TYPE_SIGNED (float));
267 ASSERT (TYPE_SIGNED (double));
268 ASSERT (TYPE_SIGNED (long double));