string/test-strrchr.c

   1 /* Test and measure STRCHR 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    Added wcsrrchr support by Liubov Dmitrieva <liubov.dmitrieva@gmail.com>,
   6    2011.
   7
   8    The GNU C Library is free software; you can redistribute it and/or
   9    modify it under the terms of the GNU Lesser General Public
  10    License as published by the Free Software Foundation; either
  11    version 2.1 of the License, or (at your option) any later version.
  12
  13    The GNU C Library is distributed in the hope that it will be useful,
  14    but WITHOUT ANY WARRANTY; without even the implied warranty of
  15    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  16    Lesser General Public License for more details.
  17
  18    You should have received a copy of the GNU Lesser General Public
  19    License along with the GNU C Library; if not, see
  20    <http://www.gnu.org/licenses/>.  */
  21
  22 #define TEST_MAIN
  23 #ifdef WIDE
  24 # define TEST_NAME "wcsrchr"
  25 #else
  26 # define TEST_NAME "strrchr"
  27 #endif
  28 #include "test-string.h"
  29
  30 #ifdef WIDE
  31 # include <wchar.h>
  32 # define SIMPLE_STRRCHR simple_wcsrchr
  33 # define STRRCHR wcsrchr
  34 # define CHAR wchar_t
  35 # define UCHAR wchar_t
  36 # define BIG_CHAR WCHAR_MAX
  37 # define SMALL_CHAR 1273
  38 #else
  39 # define SIMPLE_STRRCHR simple_strrchr
  40 # define STRRCHR strrchr
  41 # define CHAR char
  42 # define UCHAR unsigned char
  43 # define BIG_CHAR CHAR_MAX
  44 # define SMALL_CHAR 127
  45 #endif
  46
  47 typedef CHAR *(*proto_t) (const CHAR *, int);
  48 CHAR *SIMPLE_STRRCHR (const CHAR *, int);
  49
  50 IMPL (SIMPLE_STRRCHR, 0)
  51 IMPL (STRRCHR, 1)
  52
  53 CHAR *
  54 SIMPLE_STRRCHR (const CHAR *s, int c)
  55 {
  56   const CHAR *ret = NULL;
  57
  58   for (; *s != '\0'; ++s)
  59     if (*s == (CHAR) c)
  60       ret = s;
  61
  62   return (CHAR *) (c == '\0' ? s : ret);
  63 }
  64
  65 static void
  66 do_one_test (impl_t *impl, const CHAR *s, int c, CHAR *exp_res)
  67 {
  68   CHAR *res = CALL (impl, s, c);
  69   if (res != exp_res)
  70     {
  71       error (0, 0, "Wrong result in function %s %p %p", impl->name,
  72              res, 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, c);
  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, int seek_char, int max_char)
  98 /* For wcsrchr: align here means align not in bytes,
  99    but in wchar_ts, in bytes it will equal to align * (sizeof (wchar_t))
 100    len for wcschr here isn't in bytes but it's number of wchar_t symbols.  */
 101 {
 102   size_t i;
 103   CHAR *result;
 104   CHAR *buf = (CHAR *) buf1;
 105
 106   align &= 7;
 107   if ( (align + len) * sizeof(CHAR) >= page_size)
 108     return;
 109
 110   for (i = 0; i < len; ++i)
 111     {
 112       buf[align + i] = (random () * random ()) & max_char;
 113       if (!buf[align + i])
 114         buf[align + i] = (random () * random ()) & max_char;
 115       if (!buf[align + i])
 116         buf[align + i] = 1;
 117       if ((i > pos || pos >= len) && buf[align + i] == seek_char)
 118         buf[align + i] = seek_char + 10 + (random () & 15);
 119     }
 120   buf[align + len] = 0;
 121
 122   if (pos < len)
 123     {
 124       buf[align + pos] = seek_char;
 125       result = (CHAR *) (buf + align + pos);
 126     }
 127   else if (seek_char == 0)
 128     result = (CHAR *) (buf + align + len);
 129   else
 130     result = NULL;
 131
 132   if (HP_TIMING_AVAIL)
 133     printf ("Length %4zd, alignment in bytes %2zd:", pos, align * sizeof(CHAR));
 134
 135   FOR_EACH_IMPL (impl, 0)
 136     do_one_test (impl, (CHAR *) (buf + align), seek_char, result);
 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, len;
 146   int seek_char;
 147   CHAR *result;
 148   UCHAR *p = (UCHAR *) (buf1 + page_size) - 512;
 149
 150   for (n = 0; n < ITERATIONS; n++)
 151     {
 152       align = random () & (63 / sizeof(CHAR));
 153       /* For wcsrchr: align here means align not in bytes, but in wchar_ts,
 154          in bytes it will equal to align * (sizeof (wchar_t)).
 155          For strrchr we need to check all alignments from 0 to 63 since
 156          some assembly implementations have separate prolog for alignments
 157          more 48. */
 158       pos = random () & 511;
 159       if (pos + align >= 511)
 160         pos = 510 - align - (random () & 7);
 161       len = random () & 511;
 162       /* len for wcschr here isn't in bytes but it's number of wchar_t
 163          symbols.  */
 164       if (pos >= len)
 165         len = pos + (random () & 7);
 166       if (len + align >= 512)
 167         len = 511 - align - (random () & 7);
 168       seek_char = random () & 255;
 169       if (seek_char && pos == len)
 170         {
 171           if (pos)
 172             --pos;
 173           else
 174             ++len;
 175         }
 176       j = len + align + 64;
 177       if (j > 512)
 178         j = 512;
 179
 180       for (i = 0; i < j; i++)
 181         {
 182           if (i == pos + align)
 183             p[i] = seek_char;
 184           else if (i == len + align)
 185             p[i] = 0;
 186           else
 187             {
 188               p[i] = random () & 255;
 189               if (((i > pos + align && i < len + align) || pos > len)
 190                   && p[i] == seek_char)
 191                 p[i] = seek_char + 13;
 192               if (i < len + align && !p[i])
 193                 {
 194                   p[i] = seek_char - 13;
 195                   if (!p[i])
 196                     p[i] = 140;
 197                 }
 198             }
 199         }
 200
 201       if (pos <= len)
 202         result = (CHAR *) (p + pos + align);
 203       else if (seek_char == 0)
 204         result = (CHAR *) (p + len + align);
 205       else
 206         result = NULL;
 207
 208       FOR_EACH_IMPL (impl, 1)
 209         if (CALL (impl, (CHAR *) (p + align), seek_char) != result)
 210           {
 211             error (0, 0, "Iteration %zd - wrong result in function %s (%zd, %d, %zd, %zd) %p != %p, p %p",
 212                    n, impl->name, align, seek_char, len, pos,
 213                    CALL (impl, (CHAR *) (p + align), seek_char), result, p);
 214             ret = 1;
 215           }
 216     }
 217 }
 218
 219 int
 220 test_main (void)
 221 {
 222   size_t i;
 223
 224   test_init ();
 225
 226   printf ("%20s", "");
 227   FOR_EACH_IMPL (impl, 0)
 228     printf ("\t%s", impl->name);
 229   putchar ('\n');
 230
 231   for (i = 1; i < 8; ++i)
 232     {
 233       do_test (0, 16 << i, 2048, 23, SMALL_CHAR);
 234       do_test (i, 16 << i, 2048, 23, SMALL_CHAR);
 235     }
 236
 237   for (i = 1; i < 8; ++i)
 238     {
 239       do_test (i, 64, 256, 23, SMALL_CHAR);
 240       do_test (i, 64, 256, 23, BIG_CHAR);
 241     }
 242
 243   for (i = 0; i < 32; ++i)
 244     {
 245       do_test (0, i, i + 1, 23, SMALL_CHAR);
 246       do_test (0, i, i + 1, 23, BIG_CHAR);
 247     }
 248
 249   for (i = 1; i < 8; ++i)
 250     {
 251       do_test (0, 16 << i, 2048, 0, SMALL_CHAR);
 252       do_test (i, 16 << i, 2048, 0, SMALL_CHAR);
 253     }
 254
 255   for (i = 1; i < 8; ++i)
 256     {
 257       do_test (i, 64, 256, 0, SMALL_CHAR);
 258       do_test (i, 64, 256, 0, BIG_CHAR);
 259     }
 260
 261   for (i = 0; i < 32; ++i)
 262     {
 263       do_test (0, i, i + 1, 0, SMALL_CHAR);
 264       do_test (0, i, i + 1, 0, BIG_CHAR);
 265     }
 266
 267   do_random_tests ();
 268   return ret;
 269 }
 270
 271 #include "../test-skeleton.c"