string/test-strspn.c

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