1 /* Test and measure memchr functions.
2 Copyright (C) 1999,2002,2003,2005,2009,2011 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
24 #include "test-string.h"
26 typedef char *(*proto_t) (const char *, int);
27 char *simple_rawmemchr (const char *, int);
29 IMPL (simple_rawmemchr, 0)
33 simple_rawmemchr (const char *s, int c)
37 return (char *) s - 1;
42 do_one_test (impl_t *impl, const char *s, int c, char *exp_res)
44 char *res = CALL (impl, s, c);
47 error (0, 0, "Wrong result in function %s %p %p", impl->name,
55 hp_timing_t start __attribute ((unused));
56 hp_timing_t stop __attribute ((unused));
57 hp_timing_t best_time = ~ (hp_timing_t) 0;
60 for (i = 0; i < 32; ++i)
62 HP_TIMING_NOW (start);
65 HP_TIMING_BEST (best_time, start, stop);
68 printf ("\t%zd", (size_t) best_time);
73 do_test (size_t align, size_t pos, size_t len, int seek_char)
79 if (align + len >= page_size)
82 for (i = 0; i < len; ++i)
84 buf1[align + i] = 1 + 23 * i % 127;
85 if (buf1[align + i] == seek_char)
86 buf1[align + i] = seek_char + 1;
88 buf1[align + len] = 0;
92 buf1[align + pos] = seek_char;
93 buf1[align + len] = -seek_char;
94 result = (char *) (buf1 + align + pos);
97 printf ("Length %4zd, alignment %2zd:", pos, align);
99 FOR_EACH_IMPL (impl, 0)
100 do_one_test (impl, (char *) (buf1 + align), seek_char, result);
107 do_random_tests (void)
109 size_t i, j, n, align, pos, len;
112 unsigned char *p = buf1 + page_size - 512;
114 for (n = 0; n < ITERATIONS; n++)
116 align = random () & 15;
117 pos = random () & 511;
118 if (pos + align >= 512)
119 pos = 511 - align - (random () & 7);
120 len = random () & 511;
121 if (len + align >= 512)
122 len = 512 - align - (random () & 7);
125 seek_char = random () & 255;
126 j = len + align + 64;
130 for (i = 0; i < j; i++)
132 if (i == pos + align)
136 p[i] = random () & 255;
137 if (i < pos + align && p[i] == seek_char)
138 p[i] = seek_char + 13;
143 size_t r = random ();
145 len = ~(uintptr_t) (p + align) - ((r >> 5) & 31);
146 result = (char *) (p + pos + align);
148 FOR_EACH_IMPL (impl, 1)
149 if (CALL (impl, (char *) (p + align), seek_char) != result)
151 error (0, 0, "Iteration %zd - wrong result in function %s (%zd, %d, %zd, %zd) %p != %p, p %p",
152 n, impl->name, align, seek_char, len, pos,
153 CALL (impl, (char *) (p + align), seek_char),
168 FOR_EACH_IMPL (impl, 0)
169 printf ("\t%s", impl->name);
172 for (i = 1; i < 7; ++i)
174 do_test (0, 16 << i, 2048, 23);
175 do_test (i, 64, 256, 23);
176 do_test (0, 16 << i, 2048, 0);
177 do_test (i, 64, 256, 0);
179 for (i = 1; i < 32; ++i)
181 do_test (0, i, i + 1, 23);
182 do_test (0, i, i + 1, 0);
189 #include "../test-skeleton.c"