string/test-strspn.c

   1 /* Test and measure strspn functions.
   2    Copyright (C) 1999-2012 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, see
  18    <http://www.gnu.org/licenses/>.  */
  19
  20 #define TEST_MAIN
  21 #define TEST_NAME "strspn"
  22 #include "test-string.h"
  23
  24 typedef size_t (*proto_t) (const char *, const char *);
  25 size_t simple_strspn (const char *, const char *);
  26 size_t stupid_strspn (const char *, const char *);
  27
  28 IMPL (stupid_strspn, 0)
  29 IMPL (simple_strspn, 0)
  30 IMPL (strspn, 1)
  31
  32 size_t
  33 simple_strspn (const char *s, const char *acc)
  34 {
  35   const char *r, *str = s;
  36   char c;
  37
  38   while ((c = *s++) != '\0')
  39     {
  40       for (r = acc; *r != '\0'; ++r)
  41         if (*r == c)
  42           break;
  43       if (*r == '\0')
  44         return s - str - 1;
  45     }
  46   return s - str - 1;
  47 }
  48
  49 size_t
  50 stupid_strspn (const char *s, const char *acc)
  51 {
  52   size_t ns = strlen (s), nacc = strlen (acc);
  53   size_t i, j;
  54
  55   for (i = 0; i < ns; ++i)
  56     {
  57       for (j = 0; j < nacc; ++j)
  58         if (s[i] == acc[j])
  59           break;
  60       if (j == nacc)
  61         return i;
  62     }
  63   return i;
  64 }
  65
  66 static void
  67 do_one_test (impl_t *impl, const char *s, const char *acc, size_t exp_res)
  68 {
  69   size_t res = CALL (impl, s, acc);
  70   if (res != exp_res)
  71     {
  72       error (0, 0, "Wrong result in function %s %p %p", impl->name,
  73              (void *) res, (void *) exp_res);
  74       ret = 1;
  75       return;
  76     }
  77
  78   if (HP_TIMING_AVAIL)
  79     {
  80       hp_timing_t start __attribute ((unused));
  81       hp_timing_t stop __attribute ((unused));
  82       hp_timing_t best_time = ~ (hp_timing_t) 0;
  83       size_t i;
  84
  85       for (i = 0; i < 32; ++i)
  86         {
  87           HP_TIMING_NOW (start);
  88           CALL (impl, s, acc);
  89           HP_TIMING_NOW (stop);
  90           HP_TIMING_BEST (best_time, start, stop);
  91         }
  92
  93       printf ("\t%zd", (size_t) best_time);
  94     }
  95 }
  96
  97 static void
  98 do_test (size_t align, size_t pos, size_t len)
  99 {
 100   size_t i;
 101   char *acc, *s;
 102
 103   align &= 7;
 104   if (align + pos + 10 >= page_size || len > 240 || ! len)
 105     return;
 106
 107   acc = (char *) (buf2 + (random () & 255));
 108   s = (char *) (buf1 + align);
 109
 110   for (i = 0; i < len; ++i)
 111     {
 112       acc[i] = random () & 255;
 113       if (!acc[i])
 114         acc[i] = random () & 255;
 115       if (!acc[i])
 116         acc[i] = 1 + (random () & 127);
 117     }
 118   acc[len] = '\0';
 119
 120   for (i = 0; i < pos; ++i)
 121     s[i] = acc[random () % len];
 122   s[pos] = random () & 255;
 123   if (strchr (acc, s[pos]))
 124     s[pos] = '\0';
 125   else
 126     {
 127       for (i = pos + 1; i < pos + 10; ++i)
 128         s[i] = random () & 255;
 129       s[i] = '\0';
 130     }
 131
 132   if (HP_TIMING_AVAIL)
 133     printf ("Length %4zd, alignment %2zd, acc len %2zd:", pos, align, len);
 134
 135   FOR_EACH_IMPL (impl, 0)
 136     do_one_test (impl, s, acc, pos);
 137
 138   if (HP_TIMING_AVAIL)
 139     putchar ('\n');
 140 }
 141
 142 static void
 143 do_random_tests (void)
 144 {
 145   size_t i, j, n, align, pos, alen, len;
 146   unsigned char *p = buf1 + page_size - 512;
 147   unsigned char *acc;
 148
 149   for (n = 0; n < ITERATIONS; n++)
 150     {
 151       align = random () & 15;
 152       if (random () & 1)
 153         alen = random () & 63;
 154       else
 155         alen = random () & 15;
 156       if (!alen)
 157         pos = 0;
 158       else
 159         pos = random () & 511;
 160       if (pos + align >= 511)
 161         pos = 510 - align - (random () & 7);
 162       len = random () & 511;
 163       if (len + align >= 512)
 164         len = 511 - align - (random () & 7);
 165       acc = buf2 + page_size - alen - 1 - (random () & 7);
 166       for (i = 0; i < alen; ++i)
 167         {
 168           acc[i] = random () & 255;
 169           if (!acc[i])
 170             acc[i] = random () & 255;
 171           if (!acc[i])
 172             acc[i] = 1 + (random () & 127);
 173         }
 174       acc[i] = '\0';
 175       j = (pos > len ? pos : len) + align + 64;
 176       if (j > 512)
 177         j = 512;
 178
 179       for (i = 0; i < j; i++)
 180         {
 181           if (i == len + align)
 182             p[i] = '\0';
 183           else if (i == pos + align)
 184             {
 185               p[i] = random () & 255;
 186               if (strchr ((char *) acc, p[i]))
 187                 p[i] = '\0';
 188             }
 189           else if (i < align || i > pos + align)
 190             p[i] = random () & 255;
 191           else
 192             p[i] = acc [random () % alen];
 193         }
 194
 195       FOR_EACH_IMPL (impl, 1)
 196         if (CALL (impl, (char *) (p + align),
 197                   (char *) acc) != (pos < len ? pos : len))
 198           {
 199             error (0, 0, "Iteration %zd - wrong result in function %s (%zd, %p, %zd, %zd, %zd) %zd != %zd",
 200                    n, impl->name, align, acc, alen, pos, len,
 201                    CALL (impl, (char *) (p + align), (char *) acc),
 202                    (pos < len ? pos : len));
 203             ret = 1;
 204           }
 205     }
 206 }
 207
 208 int
 209 test_main (void)
 210 {
 211   size_t i;
 212
 213   test_init ();
 214
 215   printf ("%32s", "");
 216   FOR_EACH_IMPL (impl, 0)
 217     printf ("\t%s", impl->name);
 218   putchar ('\n');
 219
 220   for (i = 0; i < 32; ++i)
 221     {
 222       do_test (0, 512, i);
 223       do_test (i, 512, i);
 224     }
 225
 226   for (i = 1; i < 8; ++i)
 227     {
 228       do_test (0, 16 << i, 4);
 229       do_test (i, 16 << i, 4);
 230     }
 231
 232   for (i = 1; i < 8; ++i)
 233     do_test (i, 64, 10);
 234
 235   for (i = 0; i < 64; ++i)
 236     do_test (0, i, 6);
 237
 238   do_random_tests ();
 239   return ret;
 240 }
 241
 242 #include "../test-skeleton.c"