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4660856c | 1 | /* Test and measure memrchr functions. |
688903eb | 2 | Copyright (C) 2013-2018 Free Software Foundation, Inc. |
4660856c AZ |
3 | This file is part of the GNU C Library. |
4 | Written by Jakub Jelinek <jakub@redhat.com>, 1999. | |
5 | ||
6 | The GNU C Library is free software; you can redistribute it and/or | |
7 | modify it under the terms of the GNU Lesser General Public | |
8 | License as published by the Free Software Foundation; either | |
9 | version 2.1 of the License, or (at your option) any later version. | |
10 | ||
11 | The GNU C Library is distributed in the hope that it will be useful, | |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
14 | Lesser General Public License for more details. | |
15 | ||
16 | You should have received a copy of the GNU Lesser General Public | |
17 | License along with the GNU C Library; if not, see | |
18 | <http://www.gnu.org/licenses/>. */ | |
19 | ||
20 | #define TEST_MAIN | |
21 | #define TEST_NAME "memrchr" | |
22 | #include "test-string.h" | |
23 | ||
24 | typedef char *(*proto_t) (const char *, int, size_t); | |
25 | char *simple_memrchr (const char *, int, size_t); | |
26 | ||
27 | IMPL (simple_memrchr, 0) | |
28 | IMPL (memrchr, 1) | |
29 | ||
30 | char * | |
31 | simple_memrchr (const char *s, int c, size_t n) | |
32 | { | |
33 | s = s + n; | |
34 | while (n--) | |
35 | if (*--s == (char) c) | |
36 | return (char *) s; | |
37 | return NULL; | |
38 | } | |
39 | ||
40 | static void | |
41 | do_one_test (impl_t *impl, const char *s, int c, size_t n, char *exp_res) | |
42 | { | |
43 | char *res = CALL (impl, s, c, n); | |
44 | if (res != exp_res) | |
45 | { | |
46 | error (0, 0, "Wrong result in function %s %p %p", impl->name, | |
47 | res, exp_res); | |
48 | ret = 1; | |
49 | return; | |
50 | } | |
51 | } | |
52 | ||
53 | static void | |
54 | do_test (size_t align, size_t pos, size_t len, int seek_char) | |
55 | { | |
56 | size_t i; | |
57 | char *result; | |
58 | ||
59 | align &= 7; | |
60 | if (align + len >= page_size) | |
61 | return; | |
62 | ||
63 | for (i = 0; i < len; ++i) | |
64 | { | |
65 | buf1[align + i] = 1 + 23 * i % 127; | |
66 | if (buf1[align + i] == seek_char) | |
67 | buf1[align + i] = seek_char + 1; | |
68 | } | |
69 | buf1[align + len] = 0; | |
70 | ||
71 | if (pos < len) | |
72 | { | |
73 | buf1[align + pos] = seek_char; | |
74 | buf1[align + len] = -seek_char; | |
75 | result = (char *) (buf1 + align + pos); | |
76 | } | |
77 | else | |
78 | { | |
79 | result = NULL; | |
80 | buf1[align + len] = seek_char; | |
81 | } | |
82 | ||
83 | FOR_EACH_IMPL (impl, 0) | |
84 | do_one_test (impl, (char *) (buf1 + align), seek_char, len, result); | |
85 | } | |
86 | ||
87 | static void | |
88 | do_random_tests (void) | |
89 | { | |
90 | size_t i, j, n, align, pos, len; | |
91 | int seek_char; | |
92 | char *result; | |
93 | unsigned char *p = buf1 + page_size - 512; | |
94 | ||
95 | for (n = 0; n < ITERATIONS; n++) | |
96 | { | |
97 | align = random () & 15; | |
98 | pos = random () & 511; | |
99 | if (pos + align >= 512) | |
100 | pos = 511 - align - (random () & 7); | |
101 | len = random () & 511; | |
102 | if (pos >= len) | |
103 | len = pos + (random () & 7); | |
104 | if (len + align >= 512) | |
105 | len = 512 - align - (random () & 7); | |
106 | seek_char = random () & 255; | |
107 | j = len + align + 64; | |
108 | if (j > 512) | |
109 | j = 512; | |
110 | ||
111 | for (i = 0; i < j; i++) | |
112 | { | |
113 | if (i == pos + align) | |
114 | p[i] = seek_char; | |
115 | else | |
116 | { | |
117 | p[i] = random () & 255; | |
118 | if (p[i] == seek_char) | |
119 | p[i] = seek_char + 13; | |
120 | } | |
121 | } | |
122 | ||
123 | if (pos < len) | |
124 | result = (char *) (p + pos + align); | |
125 | else | |
126 | result = NULL; | |
127 | ||
128 | FOR_EACH_IMPL (impl, 1) | |
129 | if (CALL (impl, (char *) (p + align), seek_char, len) != result) | |
130 | { | |
131 | error (0, 0, "Iteration %zd - wrong result in function %s (%zd, %d, %zd, %zd) %p != %p, p %p", | |
132 | n, impl->name, align, seek_char, len, pos, | |
133 | CALL (impl, (char *) (p + align), seek_char, len), | |
134 | result, p); | |
135 | ret = 1; | |
136 | } | |
137 | } | |
138 | } | |
139 | ||
140 | int | |
141 | test_main (void) | |
142 | { | |
143 | size_t i; | |
144 | ||
145 | test_init (); | |
146 | ||
147 | printf ("%20s", ""); | |
148 | FOR_EACH_IMPL (impl, 0) | |
149 | printf ("\t%s", impl->name); | |
150 | putchar ('\n'); | |
151 | ||
152 | for (i = 1; i < 8; ++i) | |
153 | { | |
4615f5ae L |
154 | /* Test len == 0. */ |
155 | do_test (i, i, 0, 0); | |
156 | do_test (i, i, 0, 23); | |
157 | ||
4660856c AZ |
158 | do_test (0, 16 << i, 2048, 23); |
159 | do_test (i, 64, 256, 23); | |
160 | do_test (0, 16 << i, 2048, 0); | |
161 | do_test (i, 64, 256, 0); | |
4615f5ae L |
162 | |
163 | do_test (0, i, 256, 23); | |
164 | do_test (0, i, 256, 0); | |
165 | do_test (i, i, 256, 23); | |
166 | do_test (i, i, 256, 0); | |
167 | ||
4660856c AZ |
168 | } |
169 | for (i = 1; i < 32; ++i) | |
170 | { | |
171 | do_test (0, i, i + 1, 23); | |
172 | do_test (0, i, i + 1, 0); | |
4615f5ae L |
173 | do_test (i, i, i + 1, 23); |
174 | do_test (i, i, i + 1, 0); | |
175 | ||
176 | do_test (0, 1, i + 1, 23); | |
177 | do_test (0, 2, i + 1, 0); | |
178 | do_test (i, 1, i + 1, 23); | |
179 | do_test (i, 2, i + 1, 0); | |
4660856c AZ |
180 | } |
181 | ||
182 | do_random_tests (); | |
183 | return ret; | |
184 | } | |
185 | ||
fb82116f | 186 | #include <support/test-driver.c> |