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/* Measure strspn functions.
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Copyright (C) 2013-2018 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<http://www.gnu.org/licenses/>. */
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#define TEST_MAIN
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#ifndef WIDE
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# define TEST_NAME "strspn"
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#else
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# define TEST_NAME "wcsspn"
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#endif /* WIDE */
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#include "bench-string.h"
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#ifndef WIDE
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# define STRSPN strspn
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# define CHAR char
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# define SIMPLE_STRSPN simple_strspn
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# define STUPID_STRSPN stupid_strspn
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# define STRLEN strlen
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# define STRCHR strchr
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# define BIG_CHAR CHAR_MAX
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# define SMALL_CHAR 127
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#else
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# include <wchar.h>
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# define STRSPN wcsspn
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# define CHAR wchar_t
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# define SIMPLE_STRSPN simple_wcsspn
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# define STUPID_STRSPN stupid_wcsspn
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# define STRLEN wcslen
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# define STRCHR wcschr
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# define BIG_CHAR WCHAR_MAX
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# define SMALL_CHAR 1273
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#endif /* WIDE */
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typedef size_t (*proto_t) (const CHAR *, const CHAR *);
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size_t SIMPLE_STRSPN (const CHAR *, const CHAR *);
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size_t STUPID_STRSPN (const CHAR *, const CHAR *);
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IMPL (STUPID_STRSPN, 0)
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IMPL (SIMPLE_STRSPN, 0)
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IMPL (STRSPN, 1)
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size_t
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SIMPLE_STRSPN (const CHAR *s, const CHAR *acc)
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{
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const CHAR *r, *str = s;
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CHAR c;
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while ((c = *s++) != '\0')
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{
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for (r = acc; *r != '\0'; ++r)
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if (*r == c)
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break;
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if (*r == '\0')
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return s - str - 1;
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}
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return s - str - 1;
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}
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size_t
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STUPID_STRSPN (const CHAR *s, const CHAR *acc)
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{
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size_t ns = STRLEN (s), nacc = STRLEN (acc);
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size_t i, j;
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for (i = 0; i < ns; ++i)
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{
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for (j = 0; j < nacc; ++j)
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if (s[i] == acc[j])
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break;
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if (j == nacc)
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return i;
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}
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return i;
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}
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static void
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do_one_test (impl_t *impl, const CHAR *s, const CHAR *acc, size_t exp_res)
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{
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size_t res = CALL (impl, s, acc), i, iters = INNER_LOOP_ITERS;
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timing_t start, stop, cur;
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if (res != exp_res)
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{
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error (0, 0, "Wrong result in function %s %p %p", impl->name,
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(void *) res, (void *) exp_res);
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ret = 1;
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return;
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}
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TIMING_NOW (start);
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for (i = 0; i < iters; ++i)
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{
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CALL (impl, s, acc);
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}
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TIMING_NOW (stop);
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TIMING_DIFF (cur, start, stop);
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TIMING_PRINT_MEAN ((double) cur, (double) iters);
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}
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static void
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do_test (size_t align, size_t pos, size_t len)
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{
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size_t i;
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CHAR *acc, *s;
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align &= 7;
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if ((align + pos + 10) * sizeof (CHAR) >= page_size || len > 240 || ! len)
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return;
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acc = (CHAR *) (buf2) + (random () & 255);
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s = (CHAR *) (buf1) + align;
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for (i = 0; i < len; ++i)
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{
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acc[i] = random () & BIG_CHAR;
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if (!acc[i])
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acc[i] = random () & BIG_CHAR;
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if (!acc[i])
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acc[i] = 1 + (random () & SMALL_CHAR);
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}
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acc[len] = '\0';
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for (i = 0; i < pos; ++i)
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s[i] = acc[random () % len];
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s[pos] = random () & BIG_CHAR;
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if (STRCHR (acc, s[pos]))
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s[pos] = '\0';
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else
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{
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for (i = pos + 1; i < pos + 10; ++i)
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s[i] = random () & BIG_CHAR;
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s[i] = '\0';
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}
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printf ("Length %4zd, alignment %2zd, acc len %2zd:", pos, align, len);
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FOR_EACH_IMPL (impl, 0)
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do_one_test (impl, s, acc, pos);
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putchar ('\n');
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}
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int
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test_main (void)
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{
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size_t i;
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test_init ();
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printf ("%32s", "");
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FOR_EACH_IMPL (impl, 0)
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printf ("\t%s", impl->name);
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putchar ('\n');
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for (i = 0; i < 32; ++i)
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{
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do_test (0, 512, i);
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do_test (i, 512, i);
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}
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for (i = 1; i < 8; ++i)
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{
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do_test (0, 16 << i, 4);
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do_test (i, 16 << i, 4);
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}
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for (i = 1; i < 8; ++i)
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do_test (i, 64, 10);
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for (i = 0; i < 64; ++i)
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do_test (0, i, 6);
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return ret;
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}
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#include <support/test-driver.c>
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