.
[glibc/history.git] / string / test-strcat.c
blob443752069c04edf1e20ce4610821459cb9907383
1 /* Test and measure strcat functions.
2 Copyright (C) 1999, 2002, 2003, 2005 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
19 02111-1307 USA. */
21 #define TEST_MAIN
22 #include "test-string.h"
24 typedef char *(*proto_t) (char *, const char *);
25 char *simple_strcat (char *, const char *);
27 IMPL (simple_strcat, 0)
28 IMPL (strcat, 1)
30 char *
31 simple_strcat (char *dst, const char *src)
33 char *ret = dst;
34 while (*dst++ != '\0');
35 --dst;
36 while ((*dst++ = *src++) != '\0');
37 return ret;
40 static void
41 do_one_test (impl_t *impl, char *dst, const char *src)
43 size_t k = strlen (dst);
44 if (CALL (impl, dst, src) != dst)
46 error (0, 0, "Wrong result in function %s %p %p", impl->name,
47 CALL (impl, dst, src), dst);
48 ret = 1;
49 return;
52 if (strcmp (dst + k, src) != 0)
54 error (0, 0, "Wrong result in function %s dst \"%s\" src \"%s\"",
55 impl->name, dst, src);
56 ret = 1;
57 return;
60 if (HP_TIMING_AVAIL)
62 hp_timing_t start __attribute ((unused));
63 hp_timing_t stop __attribute ((unused));
64 hp_timing_t best_time = ~ (hp_timing_t) 0;
65 size_t i;
67 for (i = 0; i < 32; ++i)
69 dst[k] = '\0';
70 HP_TIMING_NOW (start);
71 CALL (impl, dst, src);
72 HP_TIMING_NOW (stop);
73 HP_TIMING_BEST (best_time, start, stop);
76 printf ("\t%zd", (size_t) best_time);
80 static void
81 do_test (size_t align1, size_t align2, size_t len1, size_t len2, int max_char)
83 size_t i;
84 char *s1, *s2;
86 align1 &= 7;
87 if (align1 + len1 >= page_size)
88 return;
90 align2 &= 7;
91 if (align2 + len1 + len2 >= page_size)
92 return;
94 s1 = (char *) (buf1 + align1);
95 s2 = (char *) (buf2 + align2);
97 for (i = 0; i < len1; ++i)
98 s1[i] = 32 + 23 * i % (max_char - 32);
99 s1[len1] = '\0';
101 for (i = 0; i < len2; i++)
102 s2[i] = 32 + 23 * i % (max_char - 32);
104 if (HP_TIMING_AVAIL)
105 printf ("Length %4zd/%4zd, alignment %2zd/%2zd:", len1, len2, align1, align2);
107 FOR_EACH_IMPL (impl, 0)
109 s2[len2] = '\0';
110 do_one_test (impl, s2, s1);
113 if (HP_TIMING_AVAIL)
114 putchar ('\n');
117 static void
118 do_random_tests (void)
120 size_t i, j, n, align1, align2, len1, len2;
121 unsigned char *p1 = buf1 + page_size - 512;
122 unsigned char *p2 = buf2 + page_size - 512;
123 unsigned char *res;
125 for (n = 0; n < ITERATIONS; n++)
127 align1 = random () & 31;
128 if (random () & 1)
129 align2 = random () & 31;
130 else
131 align2 = align1 + (random () & 24);
132 len1 = random () & 511;
133 if (len1 + align2 > 512)
134 len2 = random () & 7;
135 else
136 len2 = (512 - len1 - align2) * (random () & (1024 * 1024 - 1))
137 / (1024 * 1024);
138 j = align1;
139 if (align2 + len2 > j)
140 j = align2 + len2;
141 if (len1 + j >= 511)
142 len1 = 510 - j - (random () & 7);
143 if (len1 >= 512)
144 len1 = 0;
145 if (align1 + len1 < 512 - 8)
147 j = 510 - align1 - len1 - (random () & 31);
148 if (j > 0 && j < 512)
149 align1 += j;
151 j = len1 + align1 + 64;
152 if (j > 512)
153 j = 512;
154 for (i = 0; i < j; i++)
156 if (i == len1 + align1)
157 p1[i] = 0;
158 else
160 p1[i] = random () & 255;
161 if (i >= align1 && i < len1 + align1 && !p1[i])
162 p1[i] = (random () & 127) + 3;
165 for (i = 0; i < len2; i++)
167 buf1[i] = random () & 255;
168 if (!buf1[i])
169 buf1[i] = (random () & 127) + 3;
171 buf1[len2] = 0;
173 FOR_EACH_IMPL (impl, 1)
175 memset (p2 - 64, '\1', align2 + 64);
176 memset (p2 + align2 + len2 + 1, '\1', 512 - align2 - len2 - 1);
177 memcpy (p2 + align2, buf1, len2 + 1);
178 res = (unsigned char *) CALL (impl, (char *) (p2 + align2),
179 (char *) (p1 + align1));
180 if (res != p2 + align2)
182 error (0, 0, "Iteration %zd - wrong result in function %s (%zd, %zd, %zd %zd) %p != %p",
183 n, impl->name, align1, align2, len1, len2, res,
184 p2 + align2);
185 ret = 1;
187 for (j = 0; j < align2 + 64; ++j)
189 if (p2[j - 64] != '\1')
191 error (0, 0, "Iteration %zd - garbage before, %s (%zd, %zd, %zd, %zd)",
192 n, impl->name, align1, align2, len1, len2);
193 ret = 1;
194 break;
197 if (memcmp (p2 + align2, buf1, len2))
199 error (0, 0, "Iteration %zd - garbage in string before, %s (%zd, %zd, %zd, %zd)",
200 n, impl->name, align1, align2, len1, len2);
201 ret = 1;
203 for (j = align2 + len1 + len2 + 1; j < 512; ++j)
205 if (p2[j] != '\1')
207 error (0, 0, "Iteration %zd - garbage after, %s (%zd, %zd, %zd, %zd)",
208 n, impl->name, align1, align2, len1, len2);
209 ret = 1;
210 break;
213 if (memcmp (p1 + align1, p2 + align2 + len2, len1 + 1))
215 error (0, 0, "Iteration %zd - different strings, %s (%zd, %zd, %zd, %zd)",
216 n, impl->name, align1, align2, len1, len2);
217 ret = 1;
224 test_main (void)
226 size_t i;
228 test_init ();
230 printf ("%28s", "");
231 FOR_EACH_IMPL (impl, 0)
232 printf ("\t%s", impl->name);
233 putchar ('\n');
235 for (i = 0; i < 16; ++i)
237 do_test (0, 0, i, i, 127);
238 do_test (0, 0, i, i, 255);
239 do_test (0, i, i, i, 127);
240 do_test (i, 0, i, i, 255);
243 for (i = 1; i < 8; ++i)
245 do_test (0, 0, 8 << i, 8 << i, 127);
246 do_test (8 - i, 2 * i, 8 << i, 8 << i, 127);
247 do_test (0, 0, 8 << i, 2 << i, 127);
248 do_test (8 - i, 2 * i, 8 << i, 2 << i, 127);
251 for (i = 1; i < 8; ++i)
253 do_test (i, 2 * i, 8 << i, 1, 127);
254 do_test (2 * i, i, 8 << i, 1, 255);
255 do_test (i, i, 8 << i, 10, 127);
256 do_test (i, i, 8 << i, 10, 255);
259 do_random_tests ();
260 return ret;
263 #include "../test-skeleton.c"