string/test-strpbrk.c

   1 /* Test and measure strpbrk functions.
   2    Copyright (C) 1999, 2002 Free Software Foundation, Inc.
   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
  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.  */
  20
  21 #ifndef STRPBRK_RESULT
  22 # define STRPBRK_RESULT(s, pos) ((s)[(pos)] ? (s) + (pos) : NULL)
  23 # define RES_TYPE char *
  24 # define TEST_MAIN
  25 # include "test-string.h"
  26
  27 typedef char *(*proto_t) (const char *, const char *);
  28 char *simple_strpbrk (const char *, const char *);
  29 char *stupid_strpbrk (const char *, const char *);
  30
  31 IMPL (stupid_strpbrk, 0)
  32 IMPL (simple_strpbrk, 0)
  33 IMPL (strpbrk, 1)
  34
  35 char *
  36 simple_strpbrk (const char *s, const char *rej)
  37 {
  38   const char *r;
  39   char c;
  40
  41   while ((c = *s++) != '\0')
  42     for (r = rej; *r != '\0'; ++r)
  43       if (*r == c)
  44         return (char *) s - 1;
  45   return NULL;
  46 }
  47
  48 char *
  49 stupid_strpbrk (const char *s, const char *rej)
  50 {
  51   size_t ns = strlen (s), nrej = strlen (rej);
  52   size_t i, j;
  53
  54   for (i = 0; i < ns; ++i)
  55     for (j = 0; j < nrej; ++j)
  56       if (s[i] == rej[j])
  57         return (char *) s + i;
  58   return NULL;
  59 }
  60 #endif
  61
  62 static void
  63 do_one_test (impl_t *impl, const char *s, const char *rej, RES_TYPE exp_res)
  64 {
  65   RES_TYPE res = CALL (impl, s, rej);
  66   if (res != exp_res)
  67     {
  68       error (0, 0, "Wrong result in function %s %p %p", impl->name,
  69              (void *) res, (void *) exp_res);
  70       ret = 1;
  71       return;
  72     }
  73
  74   if (HP_TIMING_AVAIL)
  75     {
  76       hp_timing_t start, stop, best_time = ~ (hp_timing_t) 0;
  77       size_t i;
  78
  79       for (i = 0; i < 32; ++i)
  80         {
  81           HP_TIMING_NOW (start);
  82           CALL (impl, s, rej);
  83           HP_TIMING_NOW (stop);
  84           HP_TIMING_BEST (best_time, start, stop);
  85         }
  86
  87       printf ("\t%zd", (size_t) best_time);
  88     }
  89 }
  90
  91 static void
  92 do_test (size_t align, size_t pos, size_t len)
  93 {
  94   size_t i;
  95   int c;
  96   RES_TYPE result;
  97   char *rej, *s;
  98
  99   align &= 7;
 100   if (align + pos + 10 >= page_size || len > 240)
 101     return;
 102
 103   rej = buf2 + (random () & 255);
 104   s = buf1 + align;
 105
 106   for (i = 0; i < len; ++i)
 107     {
 108       rej[i] = random () & 255;
 109       if (!rej[i])
 110         rej[i] = random () & 255;
 111       if (!rej[i])
 112         rej[i] = 1 + (random () & 127);
 113     }
 114   rej[len] = '\0';
 115   for (c = 1; c <= 255; ++c)
 116     if (strchr (rej, c) == NULL)
 117       break;
 118
 119   for (i = 0; i < pos; ++i)
 120     {
 121       s[i] = random () & 255;
 122       if (strchr (rej, s[i]))
 123         {
 124           s[i] = random () & 255;
 125           if (strchr (rej, s[i]))
 126             s[i] = c;
 127         }
 128     }
 129   s[pos] = rej[random () % (len + 1)];
 130   if (s[pos])
 131     {
 132       for (i = pos + 1; i < pos + 10; ++i)
 133         s[i] = random () & 255;
 134       s[i] = '\0';
 135     }
 136   result = STRPBRK_RESULT (s, pos);
 137
 138   if (HP_TIMING_AVAIL)
 139     printf ("Length %4zd, alignment %2zd, rej len %2zd:", pos, align, len);
 140
 141   FOR_EACH_IMPL (impl, 0)
 142     do_one_test (impl, s, rej, result);
 143
 144   if (HP_TIMING_AVAIL)
 145     putchar ('\n');
 146 }
 147
 148 static void
 149 do_random_tests (void)
 150 {
 151   size_t i, j, n, align, pos, len, rlen;
 152   RES_TYPE result;
 153   int c;
 154   unsigned char *p = buf1 + page_size - 512;
 155   unsigned char *rej;
 156
 157   for (n = 0; n < ITERATIONS; n++)
 158     {
 159       align = random () & 15;
 160       pos = random () & 511;
 161       if (pos + align >= 511)
 162         pos = 510 - align - (random () & 7);
 163       len = random () & 511;
 164       if (pos >= len && (random () & 1))
 165         len = pos + 1 + (random () & 7);
 166       if (len + align >= 512)
 167         len = 511 - align - (random () & 7);
 168       if (random () & 1)
 169         rlen = random () & 63;
 170       else
 171         rlen = random () & 15;
 172       rej = buf2 + page_size - rlen - 1 - (random () & 7);
 173       for (i = 0; i < rlen; ++i)
 174         {
 175           rej[i] = random () & 255;
 176           if (!rej[i])
 177             rej[i] = random () & 255;
 178           if (!rej[i])
 179             rej[i] = 1 + (random () & 127);
 180         }
 181       rej[i] = '\0';
 182       for (c = 1; c <= 255; ++c)
 183         if (strchr (rej, c) == NULL)
 184           break;
 185       j = (pos > len ? pos : len) + align + 64;
 186       if (j > 512)
 187         j = 512;
 188
 189       for (i = 0; i < j; i++)
 190         {
 191           if (i == len + align)
 192             p[i] = '\0';
 193           else if (i == pos + align)
 194             p[i] = rej[random () % (rlen + 1)];
 195           else if (i < align || i > pos + align)
 196             p[i] = random () & 255;
 197           else
 198             {
 199               p[i] = random () & 255;
 200               if (strchr (rej, p[i]))
 201                 {
 202                   p[i] = random () & 255;
 203                   if (strchr (rej, p[i]))
 204                     p[i] = c;
 205                 }
 206             }
 207         }
 208
 209       result = STRPBRK_RESULT (p + align, pos < len ? pos : len);
 210
 211       FOR_EACH_IMPL (impl, 1)
 212         if (CALL (impl, p + align, rej) != result)
 213           {
 214             error (0, 0, "Iteration %zd - wrong result in function %s (%zd, %p, %zd, %zd, %zd) %p != %p",
 215                    n, impl->name, align, rej, rlen, pos, len,
 216                    (void *) CALL (impl, p + align, rej), (void *) result);
 217             ret = 1;
 218           }
 219     }
 220 }
 221
 222 int
 223 test_main (void)
 224 {
 225   size_t i;
 226
 227   test_init ();
 228
 229   printf ("%32s", "");
 230   FOR_EACH_IMPL (impl, 0)
 231     printf ("\t%s", impl->name);
 232   putchar ('\n');
 233
 234   for (i = 0; i < 32; ++i)
 235     {
 236       do_test (0, 512, i);
 237       do_test (i, 512, i);
 238     }
 239
 240   for (i = 1; i < 8; ++i)
 241     {
 242       do_test (0, 16 << i, 4);
 243       do_test (i, 16 << i, 4);
 244     }
 245
 246   for (i = 1; i < 8; ++i)
 247     do_test (i, 64, 10);
 248
 249   for (i = 0; i < 64; ++i)
 250     do_test (0, i, 6);
 251
 252   do_random_tests ();
 253   return ret;
 254 }
 255
 256 #include "../test-skeleton.c"