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/* Test and measure strchr functions.
Copyright (C) 1999, 2002 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Written by Jakub Jelinek <jakub@redhat.com>, 1999.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, write to the Free
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
02111-1307 USA. */
#define TEST_MAIN
#include "test-string.h"
typedef char *(*proto_t) (const char *, int);
char *simple_strchr (const char *, int);
IMPL (simple_strchr, 0)
IMPL (strchr, 1)
char *
simple_strchr (const char *s, int c)
{
for (; *s != (char) c; ++s)
if (*s == '\0')
return NULL;
return (char *) s;
}
static void
do_one_test (impl_t *impl, const char *s, int c, char *exp_res)
{
char *res = CALL (impl, s, c);
if (res != exp_res)
{
error (0, 0, "Wrong result in function %s %p %p", impl->name,
res, exp_res);
ret = 1;
return;
}
if (HP_TIMING_AVAIL)
{
hp_timing_t start, stop, best_time = ~ (hp_timing_t) 0;
size_t i;
for (i = 0; i < 32; ++i)
{
HP_TIMING_NOW (start);
CALL (impl, s, c);
HP_TIMING_NOW (stop);
HP_TIMING_BEST (best_time, start, stop);
}
printf ("\t%zd", (size_t) best_time);
}
}
static void
do_test (size_t align, size_t pos, size_t len, int seek_char, int max_char)
{
size_t i;
char *result;
align &= 7;
if (align + len >= page_size)
return;
for (i = 0; i < len; ++i)
{
buf1[align + i] = 32 + 23 * i % (max_char - 32);
if (buf1[align + i] == seek_char)
buf1[align + i] = seek_char + 1;
}
buf1[align + len] = 0;
if (pos < len)
{
buf1[align + pos] = seek_char;
result = buf1 + align + pos;
}
else if (seek_char == 0)
result = buf1 + align + len;
else
result = NULL;
if (HP_TIMING_AVAIL)
printf ("Length %4zd, alignment %2zd:", pos, align);
FOR_EACH_IMPL (impl, 0)
do_one_test (impl, buf1 + align, seek_char, result);
if (HP_TIMING_AVAIL)
putchar ('\n');
}
static void
do_random_tests (void)
{
size_t i, j, n, align, pos, len;
int seek_char;
char *result;
unsigned char *p = buf1 + page_size - 512;
for (n = 0; n < ITERATIONS; n++)
{
align = random () & 15;
pos = random () & 511;
if (pos + align >= 511)
pos = 510 - align - (random () & 7);
len = random () & 511;
if (pos >= len)
len = pos + (random () & 7);
if (len + align >= 512)
len = 511 - align - (random () & 7);
seek_char = random () & 255;
j = len + align + 64;
if (j > 512)
j = 512;
for (i = 0; i < j; i++)
{
if (i == pos + align)
p[i] = seek_char;
else if (i == len + align)
p[i] = 0;
else
{
p[i] = random () & 255;
if (i < pos + align && p[i] == seek_char)
p[i] = seek_char + 13;
if (i < len + align && !p[i])
{
p[i] = seek_char - 13;
if (!p[i])
p[i] = 140;
}
}
}
if (pos <= len)
result = p + pos + align;
else if (seek_char == 0)
result = p + len + align;
else
result = NULL;
FOR_EACH_IMPL (impl, 1)
if (CALL (impl, p + align, seek_char) != result)
{
error (0, 0, "Iteration %zd - wrong result in function %s (%zd, %d, %zd, %zd) %p != %p, p %p",
n, impl->name, align, seek_char, len, pos,
CALL (impl, p + align, seek_char), result, p);
ret = 1;
}
}
}
int
test_main (void)
{
size_t i;
test_init ();
printf ("%20s", "");
FOR_EACH_IMPL (impl, 0)
printf ("\t%s", impl->name);
putchar ('\n');
for (i = 1; i < 8; ++i)
{
do_test (0, 16 << i, 2048, 23, 127);
do_test (i, 16 << i, 2048, 23, 127);
}
for (i = 1; i < 8; ++i)
{
do_test (i, 64, 256, 23, 127);
do_test (i, 64, 256, 23, 255);
}
for (i = 0; i < 32; ++i)
{
do_test (0, i, i + 1, 23, 127);
do_test (0, i, i + 1, 23, 255);
}
for (i = 1; i < 8; ++i)
{
do_test (0, 16 << i, 2048, 0, 127);
do_test (i, 16 << i, 2048, 0, 127);
}
for (i = 1; i < 8; ++i)
{
do_test (i, 64, 256, 0, 127);
do_test (i, 64, 256, 0, 255);
}
for (i = 0; i < 32; ++i)
{
do_test (0, i, i + 1, 0, 127);
do_test (0, i, i + 1, 0, 255);
}
do_random_tests ();
return ret;
}
#include "../test-skeleton.c"
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