1 /* Test and measure strchr functions.
2 Copyright (C) 1999, 2002, 2003 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, write to the Free
18 Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
22 #include "test-string.h"
24 typedef char *(*proto_t) (const char *, int);
25 char *simple_strchr (const char *, int);
26 char *stupid_strchr (const char *, int);
28 IMPL (stupid_strchr, 0)
29 IMPL (simple_strchr, 0)
33 simple_strchr (const char *s, int c)
35 for (; *s != (char) c; ++s)
42 stupid_strchr (const char *s, int c)
44 size_t n = strlen (s) + 1;
48 return (char *) s - 1;
53 do_one_test (impl_t *impl, const char *s, int c, char *exp_res)
55 char *res = CALL (impl, s, c);
58 error (0, 0, "Wrong result in function %s %p %p", impl->name,
66 hp_timing_t start __attribute ((unused));
67 hp_timing_t stop __attribute ((unused));
68 hp_timing_t best_time = ~ (hp_timing_t) 0;
71 for (i = 0; i < 32; ++i)
73 HP_TIMING_NOW (start);
76 HP_TIMING_BEST (best_time, start, stop);
79 printf ("\t%zd", (size_t) best_time);
84 do_test (size_t align, size_t pos, size_t len, int seek_char, int max_char)
90 if (align + len >= page_size)
93 for (i = 0; i < len; ++i)
95 buf1[align + i] = 32 + 23 * i % (max_char - 32);
96 if (buf1[align + i] == seek_char)
97 buf1[align + i] = seek_char + 1;
99 buf1[align + len] = 0;
103 buf1[align + pos] = seek_char;
104 result = (char *) (buf1 + align + pos);
106 else if (seek_char == 0)
107 result = (char *) (buf1 + align + len);
112 printf ("Length %4zd, alignment %2zd:", pos, align);
114 FOR_EACH_IMPL (impl, 0)
115 do_one_test (impl, (char *) (buf1 + align), seek_char, result);
122 do_random_tests (void)
124 size_t i, j, n, align, pos, len;
127 unsigned char *p = buf1 + page_size - 512;
129 for (n = 0; n < ITERATIONS; n++)
131 align = random () & 15;
132 pos = random () & 511;
133 seek_char = random () & 255;
134 if (pos + align >= 511)
135 pos = 510 - align - (random () & 7);
136 len = random () & 511;
137 if ((pos == len && seek_char)
138 || (pos > len && (random () & 1)))
139 len = pos + 1 + (random () & 7);
140 if (len + align >= 512)
141 len = 511 - align - (random () & 7);
142 if (pos == len && seek_char)
144 j = (pos > len ? pos : len) + align + 64;
148 for (i = 0; i < j; i++)
150 if (i == pos + align)
152 else if (i == len + align)
156 p[i] = random () & 255;
157 if (i < pos + align && p[i] == seek_char)
158 p[i] = seek_char + 13;
159 if (i < len + align && !p[i])
161 p[i] = seek_char - 13;
169 result = (char *) (p + pos + align);
170 else if (seek_char == 0)
171 result = (char *) (p + len + align);
175 FOR_EACH_IMPL (impl, 1)
176 if (CALL (impl, (char *) (p + align), seek_char) != result)
178 error (0, 0, "Iteration %zd - wrong result in function %s (%zd, %d, %zd, %zd) %p != %p, p %p",
179 n, impl->name, align, seek_char, len, pos,
180 CALL (impl, (char *) (p + align), seek_char), result, p);
194 FOR_EACH_IMPL (impl, 0)
195 printf ("\t%s", impl->name);
198 for (i = 1; i < 8; ++i)
200 do_test (0, 16 << i, 2048, 23, 127);
201 do_test (i, 16 << i, 2048, 23, 127);
204 for (i = 1; i < 8; ++i)
206 do_test (i, 64, 256, 23, 127);
207 do_test (i, 64, 256, 23, 255);
210 for (i = 0; i < 32; ++i)
212 do_test (0, i, i + 1, 23, 127);
213 do_test (0, i, i + 1, 23, 255);
216 for (i = 1; i < 8; ++i)
218 do_test (0, 16 << i, 2048, 0, 127);
219 do_test (i, 16 << i, 2048, 0, 127);
222 for (i = 1; i < 8; ++i)
224 do_test (i, 64, 256, 0, 127);
225 do_test (i, 64, 256, 0, 255);
228 for (i = 0; i < 32; ++i)
230 do_test (0, i, i + 1, 0, 127);
231 do_test (0, i, i + 1, 0, 255);
238 #include "../test-skeleton.c"