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855d1560 | 1 | /* Test and measure memchr functions. |
f7a9f785 | 2 | Copyright (C) 1999-2016 Free Software Foundation, Inc. |
855d1560 UD |
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 | |
59ba27a6 PE |
17 | License along with the GNU C Library; if not, see |
18 | <http://www.gnu.org/licenses/>. */ | |
855d1560 UD |
19 | |
20 | #include <assert.h> | |
21 | ||
22 | #define TEST_MAIN | |
69f07e5f | 23 | #define TEST_NAME "rawmemchr" |
855d1560 UD |
24 | #include "test-string.h" |
25 | ||
26 | typedef char *(*proto_t) (const char *, int); | |
27 | char *simple_rawmemchr (const char *, int); | |
28 | ||
29 | IMPL (simple_rawmemchr, 0) | |
30 | IMPL (rawmemchr, 1) | |
31 | ||
32 | char * | |
33 | simple_rawmemchr (const char *s, int c) | |
34 | { | |
35 | while (1) | |
36 | if (*s++ == (char) c) | |
37 | return (char *) s - 1; | |
38 | return NULL; | |
39 | } | |
40 | ||
41 | static void | |
42 | do_one_test (impl_t *impl, const char *s, int c, char *exp_res) | |
43 | { | |
44 | char *res = CALL (impl, s, c); | |
45 | if (res != exp_res) | |
46 | { | |
47 | error (0, 0, "Wrong result in function %s %p %p", impl->name, | |
48 | res, exp_res); | |
49 | ret = 1; | |
50 | return; | |
51 | } | |
855d1560 UD |
52 | } |
53 | ||
54 | static void | |
55 | do_test (size_t align, size_t pos, size_t len, int seek_char) | |
56 | { | |
57 | size_t i; | |
58 | char *result; | |
59 | ||
60 | align &= 7; | |
61 | if (align + len >= page_size) | |
62 | return; | |
63 | ||
64 | for (i = 0; i < len; ++i) | |
65 | { | |
66 | buf1[align + i] = 1 + 23 * i % 127; | |
67 | if (buf1[align + i] == seek_char) | |
68 | buf1[align + i] = seek_char + 1; | |
69 | } | |
70 | buf1[align + len] = 0; | |
71 | ||
72 | assert (pos < len); | |
73 | ||
74 | buf1[align + pos] = seek_char; | |
75 | buf1[align + len] = -seek_char; | |
76 | result = (char *) (buf1 + align + pos); | |
77 | ||
855d1560 UD |
78 | FOR_EACH_IMPL (impl, 0) |
79 | do_one_test (impl, (char *) (buf1 + align), seek_char, result); | |
855d1560 UD |
80 | } |
81 | ||
82 | static void | |
83 | do_random_tests (void) | |
84 | { | |
85 | size_t i, j, n, align, pos, len; | |
86 | int seek_char; | |
87 | char *result; | |
88 | unsigned char *p = buf1 + page_size - 512; | |
89 | ||
90 | for (n = 0; n < ITERATIONS; n++) | |
91 | { | |
92 | align = random () & 15; | |
93 | pos = random () & 511; | |
94 | if (pos + align >= 512) | |
95 | pos = 511 - align - (random () & 7); | |
96 | len = random () & 511; | |
97 | if (len + align >= 512) | |
98 | len = 512 - align - (random () & 7); | |
99 | if (pos >= len) | |
100 | continue; | |
101 | seek_char = random () & 255; | |
102 | j = len + align + 64; | |
103 | if (j > 512) | |
104 | j = 512; | |
105 | ||
106 | for (i = 0; i < j; i++) | |
107 | { | |
108 | if (i == pos + align) | |
109 | p[i] = seek_char; | |
110 | else | |
111 | { | |
112 | p[i] = random () & 255; | |
113 | if (i < pos + align && p[i] == seek_char) | |
114 | p[i] = seek_char + 13; | |
115 | } | |
116 | } | |
117 | ||
118 | assert (pos < len); | |
119 | size_t r = random (); | |
120 | if ((r & 31) == 0) | |
121 | len = ~(uintptr_t) (p + align) - ((r >> 5) & 31); | |
122 | result = (char *) (p + pos + align); | |
123 | ||
124 | FOR_EACH_IMPL (impl, 1) | |
125 | if (CALL (impl, (char *) (p + align), seek_char) != result) | |
126 | { | |
127 | error (0, 0, "Iteration %zd - wrong result in function %s (%zd, %d, %zd, %zd) %p != %p, p %p", | |
128 | n, impl->name, align, seek_char, len, pos, | |
129 | CALL (impl, (char *) (p + align), seek_char), | |
130 | result, p); | |
131 | ret = 1; | |
132 | } | |
133 | } | |
134 | } | |
135 | ||
136 | int | |
137 | test_main (void) | |
138 | { | |
139 | size_t i; | |
140 | ||
141 | test_init (); | |
142 | ||
143 | printf ("%20s", ""); | |
144 | FOR_EACH_IMPL (impl, 0) | |
145 | printf ("\t%s", impl->name); | |
146 | putchar ('\n'); | |
147 | ||
148 | for (i = 1; i < 7; ++i) | |
149 | { | |
150 | do_test (0, 16 << i, 2048, 23); | |
151 | do_test (i, 64, 256, 23); | |
152 | do_test (0, 16 << i, 2048, 0); | |
153 | do_test (i, 64, 256, 0); | |
154 | } | |
155 | for (i = 1; i < 32; ++i) | |
156 | { | |
157 | do_test (0, i, i + 1, 23); | |
158 | do_test (0, i, i + 1, 0); | |
159 | } | |
160 | ||
161 | do_random_tests (); | |
162 | return ret; | |
163 | } | |
164 | ||
165 | #include "../test-skeleton.c" |