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/* Measure strspn functions.
Copyright (C) 2013-2014 Free Software Foundation, Inc.
This file is part of the GNU C Library.
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, see
<http://www.gnu.org/licenses/>. */
#define TEST_MAIN
#define TEST_NAME "strspn"
#include "bench-string.h"
typedef size_t (*proto_t) (const char *, const char *);
size_t simple_strspn (const char *, const char *);
size_t stupid_strspn (const char *, const char *);
IMPL (stupid_strspn, 0)
IMPL (simple_strspn, 0)
IMPL (strspn, 1)
size_t
simple_strspn (const char *s, const char *acc)
{
const char *r, *str = s;
char c;
while ((c = *s++) != '\0')
{
for (r = acc; *r != '\0'; ++r)
if (*r == c)
break;
if (*r == '\0')
return s - str - 1;
}
return s - str - 1;
}
size_t
stupid_strspn (const char *s, const char *acc)
{
size_t ns = strlen (s), nacc = strlen (acc);
size_t i, j;
for (i = 0; i < ns; ++i)
{
for (j = 0; j < nacc; ++j)
if (s[i] == acc[j])
break;
if (j == nacc)
return i;
}
return i;
}
static void
do_one_test (impl_t *impl, const char *s, const char *acc, size_t exp_res)
{
size_t res = CALL (impl, s, acc), i, iters = INNER_LOOP_ITERS;
timing_t start, stop, cur;
if (res != exp_res)
{
error (0, 0, "Wrong result in function %s %p %p", impl->name,
(void *) res, (void *) exp_res);
ret = 1;
return;
}
TIMING_NOW (start);
for (i = 0; i < iters; ++i)
{
CALL (impl, s, acc);
}
TIMING_NOW (stop);
TIMING_DIFF (cur, start, stop);
TIMING_PRINT_MEAN ((double) cur, (double) iters);
}
static void
do_test (size_t align, size_t pos, size_t len)
{
size_t i;
char *acc, *s;
align &= 7;
if (align + pos + 10 >= page_size || len > 240 || ! len)
return;
acc = (char *) (buf2 + (random () & 255));
s = (char *) (buf1 + align);
for (i = 0; i < len; ++i)
{
acc[i] = random () & 255;
if (!acc[i])
acc[i] = random () & 255;
if (!acc[i])
acc[i] = 1 + (random () & 127);
}
acc[len] = '\0';
for (i = 0; i < pos; ++i)
s[i] = acc[random () % len];
s[pos] = random () & 255;
if (strchr (acc, s[pos]))
s[pos] = '\0';
else
{
for (i = pos + 1; i < pos + 10; ++i)
s[i] = random () & 255;
s[i] = '\0';
}
printf ("Length %4zd, alignment %2zd, acc len %2zd:", pos, align, len);
FOR_EACH_IMPL (impl, 0)
do_one_test (impl, s, acc, pos);
putchar ('\n');
}
int
test_main (void)
{
size_t i;
test_init ();
printf ("%32s", "");
FOR_EACH_IMPL (impl, 0)
printf ("\t%s", impl->name);
putchar ('\n');
for (i = 0; i < 32; ++i)
{
do_test (0, 512, i);
do_test (i, 512, i);
}
for (i = 1; i < 8; ++i)
{
do_test (0, 16 << i, 4);
do_test (i, 16 << i, 4);
}
for (i = 1; i < 8; ++i)
do_test (i, 64, 10);
for (i = 0; i < 64; ++i)
do_test (0, i, 6);
return ret;
}
#include "../test-skeleton.c"
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