string/test-strrchr.c

   1 /* Test and measure STRCHR functions.
   2    Copyright (C) 1999, 2002, 2003, 2005, 2011 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, write to the Free
  20    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
  21    02111-1307 USA.  */
  22
  23 #define TEST_MAIN
  24 #include "test-string.h"
  25
  26 #ifdef WIDE
  27 # include <wchar.h>
  28 # define SIMPLE_STRRCHR simple_wcsrchr
  29 # define STRRCHR wcsrchr
  30 # define CHAR wchar_t
  31 # define UCHAR wchar_t
  32 # define BIG_CHAR WCHAR_MAX
  33 # define SMALL_CHAR 1273
  34 #else
  35 # define SIMPLE_STRRCHR simple_strrchr
  36 # define STRRCHR strrchr
  37 # define CHAR char
  38 # define UCHAR unsigned char
  39 # define BIG_CHAR CHAR_MAX
  40 # define SMALL_CHAR 127
  41 #endif
  42
  43 typedef CHAR *(*proto_t) (const CHAR *, int);
  44 CHAR *SIMPLE_STRRCHR (const CHAR *, int);
  45
  46 IMPL (SIMPLE_STRRCHR, 0)
  47 IMPL (STRRCHR, 1)
  48
  49 CHAR *
  50 SIMPLE_STRRCHR (const CHAR *s, int c)
  51 {
  52   const CHAR *ret = NULL;
  53
  54   for (; *s != '\0'; ++s)
  55     if (*s == (CHAR) c)
  56       ret = s;
  57
  58   return (CHAR *) (c == '\0' ? s : ret);
  59 }
  60
  61 static void
  62 do_one_test (impl_t *impl, const CHAR *s, int c, CHAR *exp_res)
  63 {
  64   CHAR *res = CALL (impl, s, c);
  65   if (res != exp_res)
  66     {
  67       error (0, 0, "Wrong result in function %s %p %p", impl->name,
  68              res, exp_res);
  69       ret = 1;
  70       return;
  71     }
  72
  73   if (HP_TIMING_AVAIL)
  74     {
  75       hp_timing_t start __attribute ((unused));
  76       hp_timing_t stop __attribute ((unused));
  77       hp_timing_t best_time = ~ (hp_timing_t) 0;
  78       size_t i;
  79
  80       for (i = 0; i < 32; ++i)
  81         {
  82           HP_TIMING_NOW (start);
  83           CALL (impl, s, c);
  84           HP_TIMING_NOW (stop);
  85           HP_TIMING_BEST (best_time, start, stop);
  86         }
  87
  88       printf ("\t%zd", (size_t) best_time);
  89     }
  90 }
  91
  92 static void
  93 do_test (size_t align, size_t pos, size_t len, int seek_char, int max_char)
  94 /* For wcsrchr: align here means align not in bytes,
  95    but in wchar_ts, in bytes it will equal to align * (sizeof (wchar_t))
  96    len for wcschr here isn't in bytes but it's number of wchar_t symbols.  */
  97 {
  98   size_t i;
  99   CHAR *result;
 100   CHAR *buf = (CHAR *) buf1;
 101
 102   align &= 7;
 103   if ( (align + len) * sizeof(CHAR) >= page_size)
 104     return;
 105
 106   for (i = 0; i < len; ++i)
 107     {
 108       buf[align + i] = (random () * random ()) & max_char;
 109       if (!buf[align + i])
 110         buf[align + i] = (random () * random ()) & max_char;
 111       if (!buf[align + i])
 112         buf[align + i] = 1;
 113       if ((i > pos || pos >= len) && buf[align + i] == seek_char)
 114         buf[align + i] = seek_char + 10 + (random () & 15);
 115     }
 116   buf[align + len] = 0;
 117
 118   if (pos < len)
 119     {
 120       buf[align + pos] = seek_char;
 121       result = (CHAR *) (buf + align + pos);
 122     }
 123   else if (seek_char == 0)
 124     result = (CHAR *) (buf + align + len);
 125   else
 126     result = NULL;
 127
 128   if (HP_TIMING_AVAIL)
 129     printf ("Length %4zd, alignment in bytes %2zd:", pos, align * sizeof(CHAR));
 130
 131   FOR_EACH_IMPL (impl, 0)
 132     do_one_test (impl, (CHAR *) (buf + align), seek_char, result);
 133
 134   if (HP_TIMING_AVAIL)
 135     putchar ('\n');
 136 }
 137
 138 static void
 139 do_random_tests (void)
 140 {
 141   size_t i, j, n, align, pos, len;
 142   int seek_char;
 143   CHAR *result;
 144   UCHAR *p = (UCHAR *) (buf1 + page_size) - 512;
 145
 146   for (n = 0; n < ITERATIONS; n++)
 147     {
 148       align = random () & (63 / sizeof(CHAR));
 149       /* For wcsrchr: align here means align not in bytes, but in wchar_ts,
 150          in bytes it will equal to align * (sizeof (wchar_t)).
 151          For strrchr we need to check all alignments from 0 to 63 since
 152          some assembly implementations have separate prolog for alignments
 153          more 48. */
 154       pos = random () & 511;
 155       if (pos + align >= 511)
 156         pos = 510 - align - (random () & 7);
 157       len = random () & 511;
 158       /* len for wcschr here isn't in bytes but it's number of wchar_t
 159          symbols.  */
 160       if (pos >= len)
 161         len = pos + (random () & 7);
 162       if (len + align >= 512)
 163         len = 511 - align - (random () & 7);
 164       seek_char = random () & 255;
 165       if (seek_char && pos == len)
 166         {
 167           if (pos)
 168             --pos;
 169           else
 170             ++len;
 171         }
 172       j = len + align + 64;
 173       if (j > 512)
 174         j = 512;
 175
 176       for (i = 0; i < j; i++)
 177         {
 178           if (i == pos + align)
 179             p[i] = seek_char;
 180           else if (i == len + align)
 181             p[i] = 0;
 182           else
 183             {
 184               p[i] = random () & 255;
 185               if (((i > pos + align && i < len + align) || pos > len)
 186                   && p[i] == seek_char)
 187                 p[i] = seek_char + 13;
 188               if (i < len + align && !p[i])
 189                 {
 190                   p[i] = seek_char - 13;
 191                   if (!p[i])
 192                     p[i] = 140;
 193                 }
 194             }
 195         }
 196
 197       if (pos <= len)
 198         result = (CHAR *) (p + pos + align);
 199       else if (seek_char == 0)
 200         result = (CHAR *) (p + len + align);
 201       else
 202         result = NULL;
 203
 204       FOR_EACH_IMPL (impl, 1)
 205         if (CALL (impl, (CHAR *) (p + align), seek_char) != result)
 206           {
 207             error (0, 0, "Iteration %zd - wrong result in function %s (%zd, %d, %zd, %zd) %p != %p, p %p",
 208                    n, impl->name, align, seek_char, len, pos,
 209                    CALL (impl, (CHAR *) (p + align), seek_char), result, p);
 210             ret = 1;
 211           }
 212     }
 213 }
 214
 215 int
 216 test_main (void)
 217 {
 218   size_t i;
 219
 220   test_init ();
 221
 222   printf ("%20s", "");
 223   FOR_EACH_IMPL (impl, 0)
 224     printf ("\t%s", impl->name);
 225   putchar ('\n');
 226
 227   for (i = 1; i < 8; ++i)
 228     {
 229       do_test (0, 16 << i, 2048, 23, SMALL_CHAR);
 230       do_test (i, 16 << i, 2048, 23, SMALL_CHAR);
 231     }
 232
 233   for (i = 1; i < 8; ++i)
 234     {
 235       do_test (i, 64, 256, 23, SMALL_CHAR);
 236       do_test (i, 64, 256, 23, BIG_CHAR);
 237     }
 238
 239   for (i = 0; i < 32; ++i)
 240     {
 241       do_test (0, i, i + 1, 23, SMALL_CHAR);
 242       do_test (0, i, i + 1, 23, BIG_CHAR);
 243     }
 244
 245   for (i = 1; i < 8; ++i)
 246     {
 247       do_test (0, 16 << i, 2048, 0, SMALL_CHAR);
 248       do_test (i, 16 << i, 2048, 0, SMALL_CHAR);
 249     }
 250
 251   for (i = 1; i < 8; ++i)
 252     {
 253       do_test (i, 64, 256, 0, SMALL_CHAR);
 254       do_test (i, 64, 256, 0, BIG_CHAR);
 255     }
 256
 257   for (i = 0; i < 32; ++i)
 258     {
 259       do_test (0, i, i + 1, 0, SMALL_CHAR);
 260       do_test (0, i, i + 1, 0, BIG_CHAR);
 261     }
 262
 263   do_random_tests ();
 264   return ret;
 265 }
 266
 267 #include "../test-skeleton.c"