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/* Measure strcasecmp functions.
Copyright (C) 2013-2022 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
<https://www.gnu.org/licenses/>. */
#include <ctype.h>
#define TEST_MAIN
#define TEST_NAME "strcasecmp"
#include "bench-string.h"
#include "json-lib.h"
typedef int (*proto_t) (const char *, const char *);
static int simple_strcasecmp (const char *, const char *);
IMPL (simple_strcasecmp, 0)
IMPL (strcasecmp, 1)
static int
simple_strcasecmp (const char *s1, const char *s2)
{
int ret;
while ((ret = ((unsigned char) tolower (*s1)
- (unsigned char) tolower (*s2))) == 0
&& *s1++)
++s2;
return ret;
}
static void
do_one_test (json_ctx_t *json_ctx, impl_t *impl, const char *s1,
const char *s2, int exp_result)
{
size_t i, iters = INNER_LOOP_ITERS;
timing_t start, stop, cur;
int result = CALL (impl, s1, s2);
if ((exp_result == 0 && result != 0)
|| (exp_result < 0 && result >= 0)
|| (exp_result > 0 && result <= 0))
{
error (0, 0, "Wrong result in function %s %d %d", impl->name,
result, exp_result);
ret = 1;
return;
}
TIMING_NOW (start);
for (i = 0; i < iters; ++i)
{
CALL (impl, s1, s2);
}
TIMING_NOW (stop);
TIMING_DIFF (cur, start, stop);
json_element_double (json_ctx, (double) cur / (double) iters);
}
static void
do_test (json_ctx_t *json_ctx, size_t align1, size_t align2, size_t len,
int max_char, int exp_result)
{
size_t i;
char *s1, *s2;
if (len == 0)
return;
align1 &= 7;
if (align1 + len + 1 >= page_size)
return;
align2 &= 7;
if (align2 + len + 1 >= page_size)
return;
json_element_object_begin (json_ctx);
json_attr_uint (json_ctx, "length", len);
json_attr_uint (json_ctx, "align1", align1);
json_attr_uint (json_ctx, "align2", align2);
json_attr_uint (json_ctx, "max_char", max_char);
json_array_begin (json_ctx, "timings");
s1 = (char *) (buf1 + align1);
s2 = (char *) (buf2 + align2);
for (i = 0; i < len; i++)
{
s1[i] = toupper (1 + 23 * i % max_char);
s2[i] = tolower (s1[i]);
}
s1[len] = s2[len] = 0;
s1[len + 1] = 23;
s2[len + 1] = 24 + exp_result;
if ((s2[len - 1] == 'z' && exp_result == -1)
|| (s2[len - 1] == 'a' && exp_result == 1))
s1[len - 1] += exp_result;
else
s2[len - 1] -= exp_result;
FOR_EACH_IMPL (impl, 0)
do_one_test (json_ctx, impl, s1, s2, exp_result);
json_array_end (json_ctx);
json_element_object_end (json_ctx);
}
int
test_main (void)
{
json_ctx_t json_ctx;
size_t i;
test_init ();
json_init (&json_ctx, 0, stdout);
json_document_begin (&json_ctx);
json_attr_string (&json_ctx, "timing_type", TIMING_TYPE);
json_attr_object_begin (&json_ctx, "functions");
json_attr_object_begin (&json_ctx, TEST_NAME);
json_attr_string (&json_ctx, "bench-variant", "");
json_array_begin (&json_ctx, "ifuncs");
FOR_EACH_IMPL (impl, 0)
json_element_string (&json_ctx, impl->name);
json_array_end (&json_ctx);
json_array_begin (&json_ctx, "results");
for (i = 1; i < 16; ++i)
{
do_test (&json_ctx, i, i, i, 127, 0);
do_test (&json_ctx, i, i, i, 127, 1);
do_test (&json_ctx, i, i, i, 127, -1);
}
for (i = 1; i < 10; ++i)
{
do_test (&json_ctx, 0, 0, 2 << i, 127, 0);
do_test (&json_ctx, 0, 0, 2 << i, 254, 0);
do_test (&json_ctx, 0, 0, 2 << i, 127, 1);
do_test (&json_ctx, 0, 0, 2 << i, 254, 1);
do_test (&json_ctx, 0, 0, 2 << i, 127, -1);
do_test (&json_ctx, 0, 0, 2 << i, 254, -1);
}
for (i = 1; i < 8; ++i)
{
do_test (&json_ctx, i, 2 * i, 8 << i, 127, 0);
do_test (&json_ctx, 2 * i, i, 8 << i, 254, 0);
do_test (&json_ctx, i, 2 * i, 8 << i, 127, 1);
do_test (&json_ctx, 2 * i, i, 8 << i, 254, 1);
do_test (&json_ctx, i, 2 * i, 8 << i, 127, -1);
do_test (&json_ctx, 2 * i, i, 8 << i, 254, -1);
}
json_array_end (&json_ctx);
json_attr_object_end (&json_ctx);
json_attr_object_end (&json_ctx);
json_document_end (&json_ctx);
return ret;
}
#include <support/test-driver.c>
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