Remove NOT_IN_libc definition for pthread_atfork
[glibc.git] / string / test-memchr.c
blob0ba79b8b077771c2c093ca99c2142c3e7d599e93
1 /* Test and measure memchr functions.
2 Copyright (C) 1999-2014 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
4 Written by Jakub Jelinek <jakub@redhat.com>, 1999.
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.
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.
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/>. */
20 #define TEST_MAIN
21 #define TEST_NAME "memchr"
22 #include "test-string.h"
24 typedef char *(*proto_t) (const char *, int, size_t);
25 char *simple_memchr (const char *, int, size_t);
27 IMPL (simple_memchr, 0)
28 IMPL (memchr, 1)
30 char *
31 simple_memchr (const char *s, int c, size_t n)
33 while (n--)
34 if (*s++ == (char) c)
35 return (char *) s - 1;
36 return NULL;
39 static void
40 do_one_test (impl_t *impl, const char *s, int c, size_t n, char *exp_res)
42 char *res = CALL (impl, s, c, n);
43 if (res != exp_res)
45 error (0, 0, "Wrong result in function %s %p %p", impl->name,
46 res, exp_res);
47 ret = 1;
48 return;
52 static void
53 do_test (size_t align, size_t pos, size_t len, int seek_char)
55 size_t i;
56 char *result;
58 align &= 7;
59 if (align + len >= page_size)
60 return;
62 for (i = 0; i < len; ++i)
64 buf1[align + i] = 1 + 23 * i % 127;
65 if (buf1[align + i] == seek_char)
66 buf1[align + i] = seek_char + 1;
68 buf1[align + len] = 0;
70 if (pos < len)
72 buf1[align + pos] = seek_char;
73 buf1[align + len] = -seek_char;
74 result = (char *) (buf1 + align + pos);
76 else
78 result = NULL;
79 buf1[align + len] = seek_char;
82 FOR_EACH_IMPL (impl, 0)
83 do_one_test (impl, (char *) (buf1 + align), seek_char, len, result);
86 static void
87 do_random_tests (void)
89 size_t i, j, n, align, pos, len;
90 int seek_char;
91 char *result;
92 unsigned char *p = buf1 + page_size - 512;
94 for (n = 0; n < ITERATIONS; n++)
96 align = random () & 15;
97 pos = random () & 511;
98 if (pos + align >= 512)
99 pos = 511 - align - (random () & 7);
100 len = random () & 511;
101 if (pos >= len)
102 len = pos + (random () & 7);
103 if (len + align >= 512)
104 len = 512 - align - (random () & 7);
105 seek_char = random () & 255;
106 j = len + align + 64;
107 if (j > 512)
108 j = 512;
110 for (i = 0; i < j; i++)
112 if (i == pos + align)
113 p[i] = seek_char;
114 else
116 p[i] = random () & 255;
117 if (i < pos + align && p[i] == seek_char)
118 p[i] = seek_char + 13;
122 if (pos < len)
124 size_t r = random ();
125 if ((r & 31) == 0)
126 len = ~(uintptr_t) (p + align) - ((r >> 5) & 31);
127 result = (char *) (p + pos + align);
129 else
130 result = NULL;
132 FOR_EACH_IMPL (impl, 1)
133 if (CALL (impl, (char *) (p + align), seek_char, len) != result)
135 error (0, 0, "Iteration %zd - wrong result in function %s (%zd, %d, %zd, %zd) %p != %p, p %p",
136 n, impl->name, align, seek_char, len, pos,
137 CALL (impl, (char *) (p + align), seek_char, len),
138 result, p);
139 ret = 1;
145 test_main (void)
147 size_t i;
149 test_init ();
151 printf ("%20s", "");
152 FOR_EACH_IMPL (impl, 0)
153 printf ("\t%s", impl->name);
154 putchar ('\n');
156 for (i = 1; i < 8; ++i)
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);
163 for (i = 1; i < 32; ++i)
165 do_test (0, i, i + 1, 23);
166 do_test (0, i, i + 1, 0);
169 do_random_tests ();
170 return ret;
173 #include "../test-skeleton.c"