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 /* Integer representation. */
30 verify (INT_MIN + INT_MAX < 0
31 ? (TYPE_TWOS_COMPLEMENT (int)
32 && ! TYPE_ONES_COMPLEMENT (int) && ! TYPE_SIGNED_MAGNITUDE (int))
33 : (! TYPE_TWOS_COMPLEMENT (int)
34 && (TYPE_ONES_COMPLEMENT (int) || TYPE_SIGNED_MAGNITUDE (int))));
37 /* verify (! TYPE_SIGNED (bool)); */ /* not guaranteed by gnulib substitute */
38 verify (TYPE_SIGNED (signed char));
39 verify (! TYPE_SIGNED (unsigned char));
40 verify (TYPE_SIGNED (short int));
41 verify (! TYPE_SIGNED (unsigned short int));
42 verify (TYPE_SIGNED (int));
43 verify (! TYPE_SIGNED (unsigned int));
44 verify (TYPE_SIGNED (long int));
45 verify (! TYPE_SIGNED (unsigned long int));
46 verify (TYPE_SIGNED (intmax_t));
47 verify (! TYPE_SIGNED (uintmax_t));
49 /* TYPE_MINIMUM, TYPE_MAXIMUM. */
50 verify (TYPE_MINIMUM (char) == CHAR_MIN);
51 verify (TYPE_MAXIMUM (char) == CHAR_MAX);
52 verify (TYPE_MINIMUM (unsigned char) == 0);
53 verify (TYPE_MAXIMUM (unsigned char) == UCHAR_MAX);
54 verify (TYPE_MINIMUM (signed char) == SCHAR_MIN);
55 verify (TYPE_MAXIMUM (signed char) == SCHAR_MAX);
56 verify (TYPE_MINIMUM (short int) == SHRT_MIN);
57 verify (TYPE_MAXIMUM (short int) == SHRT_MAX);
58 verify (TYPE_MINIMUM (unsigned short int) == 0);
59 verify (TYPE_MAXIMUM (unsigned short int) == USHRT_MAX);
60 verify (TYPE_MINIMUM (int) == INT_MIN);
61 verify (TYPE_MAXIMUM (int) == INT_MAX);
62 verify (TYPE_MINIMUM (unsigned int) == 0);
63 verify (TYPE_MAXIMUM (unsigned int) == UINT_MAX);
64 verify (TYPE_MINIMUM (long int) == LONG_MIN);
65 verify (TYPE_MAXIMUM (long int) == LONG_MAX);
66 verify (TYPE_MINIMUM (unsigned long int) == 0);
67 verify (TYPE_MAXIMUM (unsigned long int) == ULONG_MAX);
68 verify (TYPE_MINIMUM (intmax_t) == INTMAX_MIN);
69 verify (TYPE_MAXIMUM (intmax_t) == INTMAX_MAX);
70 verify (TYPE_MINIMUM (uintmax_t) == 0);
71 verify (TYPE_MAXIMUM (uintmax_t) == UINTMAX_MAX);
73 /* INT_BITS_STRLEN_BOUND. */
74 verify (INT_BITS_STRLEN_BOUND (1) == 1);
75 verify (INT_BITS_STRLEN_BOUND (2620) == 789);
77 /* INT_STRLEN_BOUND, INT_BUFSIZE_BOUND. */
78 #ifdef INT32_MAX /* POSIX guarantees int32_t; this ports to non-POSIX hosts */
79 verify (INT_STRLEN_BOUND (int32_t) == sizeof ("-2147483648") - 1);
80 verify (INT_BUFSIZE_BOUND (int32_t) == sizeof ("-2147483648"));
83 verify (INT_STRLEN_BOUND (int64_t) == sizeof ("-9223372036854775808") - 1);
84 verify (INT_BUFSIZE_BOUND (int64_t) == sizeof ("-9223372036854775808"));
87 /* All the INT_<op>_RANGE_OVERFLOW tests are equally valid as
88 INT_<op>_OVERFLOW tests, so define a single macro to do both. */
89 #define check_binop(op, a, b, min, max, overflow) \
90 (INT_##op##_RANGE_OVERFLOW (a, b, min, max) == (overflow) \
91 && INT_##op##_OVERFLOW (a, b) == (overflow))
92 #define check_unop(op, a, min, max, overflow) \
93 (INT_##op##_RANGE_OVERFLOW (a, min, max) == (overflow) \
94 && INT_##op##_OVERFLOW (a) == (overflow))
96 /* INT_<op>_RANGE_OVERFLOW, INT_<op>_OVERFLOW. */
97 verify (INT_ADD_RANGE_OVERFLOW (INT_MAX, 1, INT_MIN, INT_MAX));
98 verify (INT_ADD_OVERFLOW (INT_MAX, 1));
99 verify (check_binop (ADD, INT_MAX, 1, INT_MIN, INT_MAX, true));
100 verify (check_binop (ADD, INT_MAX, -1, INT_MIN, INT_MAX, false));
101 verify (check_binop (ADD, INT_MIN, 1, INT_MIN, INT_MAX, false));
102 verify (check_binop (ADD, INT_MIN, -1, INT_MIN, INT_MAX, true));
103 verify (check_binop (ADD, UINT_MAX, 1u, 0u, UINT_MAX, true));
104 verify (check_binop (ADD, 0u, 1u, 0u, UINT_MAX, false));
106 verify (check_binop (SUBTRACT, INT_MAX, 1, INT_MIN, INT_MAX, false));
107 verify (check_binop (SUBTRACT, INT_MAX, -1, INT_MIN, INT_MAX, true));
108 verify (check_binop (SUBTRACT, INT_MIN, 1, INT_MIN, INT_MAX, true));
109 verify (check_binop (SUBTRACT, INT_MIN, -1, INT_MIN, INT_MAX, false));
110 verify (check_binop (SUBTRACT, UINT_MAX, 1u, 0u, UINT_MAX, false));
111 verify (check_binop (SUBTRACT, 0u, 1u, 0u, UINT_MAX, true));
113 verify (check_unop (NEGATE, INT_MIN, INT_MIN, INT_MAX,
114 TYPE_TWOS_COMPLEMENT (int)));
115 verify (check_unop (NEGATE, 0, INT_MIN, INT_MAX, false));
116 verify (check_unop (NEGATE, INT_MAX, INT_MIN, INT_MAX, false));
117 verify (check_unop (NEGATE, 0u, 0u, UINT_MAX, false));
118 verify (check_unop (NEGATE, 1u, 0u, UINT_MAX, true));
119 verify (check_unop (NEGATE, UINT_MAX, 0u, UINT_MAX, true));
121 verify (check_binop (MULTIPLY, INT_MAX, INT_MAX, INT_MIN, INT_MAX, true));
122 verify (check_binop (MULTIPLY, INT_MAX, INT_MIN, INT_MIN, INT_MAX, true));
123 verify (check_binop (MULTIPLY, INT_MIN, INT_MAX, INT_MIN, INT_MAX, true));
124 verify (check_binop (MULTIPLY, INT_MIN, INT_MIN, INT_MIN, INT_MAX, true));
125 verify (check_binop (MULTIPLY, -1, INT_MIN, INT_MIN, INT_MAX,
126 INT_NEGATE_OVERFLOW (INT_MIN)));
127 verify (check_binop (MULTIPLY, LONG_MIN / INT_MAX, (long int) INT_MAX,
128 LONG_MIN, LONG_MIN, false));
130 verify (check_binop (DIVIDE, INT_MIN, -1, INT_MIN, INT_MAX,
131 INT_NEGATE_OVERFLOW (INT_MIN)));
132 verify (check_binop (DIVIDE, INT_MAX, 1, INT_MIN, INT_MAX, false));
133 verify (check_binop (DIVIDE, (unsigned int) INT_MIN,
134 -1u, 0u, UINT_MAX, false));
136 verify (check_binop (REMAINDER, INT_MIN, -1, INT_MIN, INT_MAX,
137 INT_NEGATE_OVERFLOW (INT_MIN)));
138 verify (check_binop (REMAINDER, INT_MAX, 1, INT_MIN, INT_MAX, false));
139 verify (check_binop (REMAINDER, (unsigned int) INT_MIN,
140 -1u, 0u, UINT_MAX, false));
142 verify (check_binop (LEFT_SHIFT, UINT_MAX, 1, 0u, UINT_MAX, true));
143 verify (check_binop (LEFT_SHIFT, UINT_MAX / 2 + 1, 1, 0u, UINT_MAX, true));
144 verify (check_binop (LEFT_SHIFT, UINT_MAX / 2, 1, 0u, UINT_MAX, false));
146 /* INT_<op>_OVERFLOW with mixed types. */
147 #define check_sum(a, b, overflow) \
148 verify (INT_ADD_OVERFLOW (a, b) == (overflow)); \
149 verify (INT_ADD_OVERFLOW (b, a) == (overflow))
150 check_sum (-1, LONG_MIN, true);
151 check_sum (-1, UINT_MAX, false);
152 check_sum (-1L, INT_MIN, INT_MIN == LONG_MIN);
153 check_sum (0u, -1, true);
154 check_sum (0u, 0, false);
155 check_sum (0u, 1, false);
156 check_sum (1, LONG_MAX, true);
157 check_sum (1, UINT_MAX, true);
158 check_sum (1L, INT_MAX, INT_MAX == LONG_MAX);
159 check_sum (1u, INT_MAX, INT_MAX == UINT_MAX);
160 check_sum (1u, INT_MIN, true);
162 verify (! INT_SUBTRACT_OVERFLOW (INT_MAX, 1u));
163 verify (! INT_SUBTRACT_OVERFLOW (UINT_MAX, 1));
164 verify (! INT_SUBTRACT_OVERFLOW (0u, -1));
165 verify (INT_SUBTRACT_OVERFLOW (UINT_MAX, -1));
166 verify (INT_SUBTRACT_OVERFLOW (INT_MIN, 1u));
167 verify (INT_SUBTRACT_OVERFLOW (-1, 0u));
169 #define check_product(a, b, overflow) \
170 verify (INT_MULTIPLY_OVERFLOW (a, b) == (overflow)); \
171 verify (INT_MULTIPLY_OVERFLOW (b, a) == (overflow))
173 check_product (-1, 1u, true);
174 check_product (-1, INT_MIN, INT_NEGATE_OVERFLOW (INT_MIN));
175 check_product (-1, UINT_MAX, true);
176 check_product (-12345, LONG_MAX / -12345 - 1, true);
177 check_product (-12345, LONG_MAX / -12345, false);
178 check_product (0, -1, false);
179 check_product (0, 0, false);
180 check_product (0, 0u, false);
181 check_product (0, 1, false);
182 check_product (0, INT_MAX, false);
183 check_product (0, INT_MIN, false);
184 check_product (0, UINT_MAX, false);
185 check_product (0u, -1, false);
186 check_product (0u, 0, false);
187 check_product (0u, 0u, false);
188 check_product (0u, 1, false);
189 check_product (0u, INT_MAX, false);
190 check_product (0u, INT_MIN, false);
191 check_product (0u, UINT_MAX, false);
192 check_product (1, INT_MAX, false);
193 check_product (1, INT_MIN, false);
194 check_product (1, UINT_MAX, false);
195 check_product (1u, INT_MIN, true);
196 check_product (1u, INT_MAX, UINT_MAX < INT_MAX);
197 check_product (INT_MAX, UINT_MAX, true);
198 check_product (INT_MAX, ULONG_MAX, true);
199 check_product (INT_MIN, LONG_MAX / INT_MIN - 1, true);
200 check_product (INT_MIN, LONG_MAX / INT_MIN, false);
201 check_product (INT_MIN, UINT_MAX, true);
202 check_product (INT_MIN, ULONG_MAX, true);
204 verify (INT_DIVIDE_OVERFLOW (INT_MIN, -1L)
205 == (TYPE_TWOS_COMPLEMENT (long int) && INT_MIN == LONG_MIN));
206 verify (! INT_DIVIDE_OVERFLOW (INT_MIN, UINT_MAX));
207 verify (! INT_DIVIDE_OVERFLOW (INTMAX_MIN, UINTMAX_MAX));
208 verify (! INT_DIVIDE_OVERFLOW (INTMAX_MIN, UINT_MAX));
209 verify (INT_DIVIDE_OVERFLOW (-11, 10u));
210 verify (INT_DIVIDE_OVERFLOW (-10, 10u));
211 verify (! INT_DIVIDE_OVERFLOW (-9, 10u));
212 verify (INT_DIVIDE_OVERFLOW (11u, -10));
213 verify (INT_DIVIDE_OVERFLOW (10u, -10));
214 verify (! INT_DIVIDE_OVERFLOW (9u, -10));
216 verify (INT_REMAINDER_OVERFLOW (INT_MIN, -1L)
217 == (TYPE_TWOS_COMPLEMENT (long int) && INT_MIN == LONG_MIN));
218 verify (INT_REMAINDER_OVERFLOW (-1, UINT_MAX));
219 verify (INT_REMAINDER_OVERFLOW ((intmax_t) -1, UINTMAX_MAX));
220 verify (INT_REMAINDER_OVERFLOW (INTMAX_MIN, UINT_MAX)
221 == (INTMAX_MAX < UINT_MAX
222 && - (unsigned int) INTMAX_MIN % UINT_MAX != 0));
223 verify (INT_REMAINDER_OVERFLOW (INT_MIN, ULONG_MAX)
224 == (INT_MIN % ULONG_MAX != 1));
225 verify (! INT_REMAINDER_OVERFLOW (1u, -1));
226 verify (! INT_REMAINDER_OVERFLOW (37*39u, -39));
227 verify (INT_REMAINDER_OVERFLOW (37*39u + 1, -39));
228 verify (INT_REMAINDER_OVERFLOW (37*39u - 1, -39));
229 verify (! INT_REMAINDER_OVERFLOW (LONG_MAX, -INT_MAX));
234 /* Test expressions that might not be integer constant expressions. */
236 /* TYPE_IS_INTEGER. */
237 ASSERT (TYPE_IS_INTEGER (bool));
238 ASSERT (TYPE_IS_INTEGER (char));
239 ASSERT (TYPE_IS_INTEGER (signed char));
240 ASSERT (TYPE_IS_INTEGER (unsigned char));
241 ASSERT (TYPE_IS_INTEGER (short int));
242 ASSERT (TYPE_IS_INTEGER (unsigned short int));
243 ASSERT (TYPE_IS_INTEGER (int));
244 ASSERT (TYPE_IS_INTEGER (unsigned int));
245 ASSERT (TYPE_IS_INTEGER (long int));
246 ASSERT (TYPE_IS_INTEGER (unsigned long int));
247 ASSERT (TYPE_IS_INTEGER (intmax_t));
248 ASSERT (TYPE_IS_INTEGER (uintmax_t));
249 ASSERT (! TYPE_IS_INTEGER (float));
250 ASSERT (! TYPE_IS_INTEGER (double));
251 ASSERT (! TYPE_IS_INTEGER (long double));
254 ASSERT (TYPE_SIGNED (float));
255 ASSERT (TYPE_SIGNED (double));
256 ASSERT (TYPE_SIGNED (long double));