Support _Float32 in libm_alias_float.
[glibc.git] / benchtests / bench-rawmemchr.c
blob9a2c00a9303fae6d20e9b87c2fff5f2a496482ce
1 /* Measure memchr functions.
2 Copyright (C) 2013-2017 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
5 The GNU C Library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Lesser General Public
7 License as published by the Free Software Foundation; either
8 version 2.1 of the License, or (at your option) any later version.
10 The GNU C Library is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 Lesser General Public License for more details.
15 You should have received a copy of the GNU Lesser General Public
16 License along with the GNU C Library; if not, see
17 <http://www.gnu.org/licenses/>. */
19 #include <assert.h>
21 #define TEST_MAIN
22 #define TEST_NAME "rawmemchr"
23 #include "bench-string.h"
25 typedef char *(*proto_t) (const char *, int);
26 char *simple_rawmemchr (const char *, int);
28 IMPL (simple_rawmemchr, 0)
29 IMPL (rawmemchr, 1)
31 char *
32 simple_rawmemchr (const char *s, int c)
34 while (1)
35 if (*s++ == (char) c)
36 return (char *) s - 1;
37 return NULL;
40 static void
41 do_one_test (impl_t *impl, const char *s, int c, char *exp_res)
43 size_t i, iters = INNER_LOOP_ITERS;
44 timing_t start, stop, cur;
45 char *res = CALL (impl, s, c);
46 if (res != exp_res)
48 error (0, 0, "Wrong result in function %s %p %p", impl->name,
49 res, exp_res);
50 ret = 1;
51 return;
54 TIMING_NOW (start);
55 for (i = 0; i < iters; ++i)
57 CALL (impl, s, c);
59 TIMING_NOW (stop);
61 TIMING_DIFF (cur, start, stop);
63 TIMING_PRINT_MEAN ((double) cur, (double) iters);
66 static void
67 do_test (size_t align, size_t pos, size_t len, int seek_char)
69 size_t i;
70 char *result;
72 align &= 7;
73 if (align + len >= page_size)
74 return;
76 for (i = 0; i < len; ++i)
78 buf1[align + i] = 1 + 23 * i % 127;
79 if (buf1[align + i] == seek_char)
80 buf1[align + i] = seek_char + 1;
82 buf1[align + len] = 0;
84 assert (pos < len);
86 buf1[align + pos] = seek_char;
87 buf1[align + len] = -seek_char;
88 result = (char *) (buf1 + align + pos);
90 printf ("Length %4zd, alignment %2zd:", pos, align);
92 FOR_EACH_IMPL (impl, 0)
93 do_one_test (impl, (char *) (buf1 + align), seek_char, result);
95 putchar ('\n');
98 int
99 test_main (void)
101 size_t i;
103 test_init ();
105 printf ("%20s", "");
106 FOR_EACH_IMPL (impl, 0)
107 printf ("\t%s", impl->name);
108 putchar ('\n');
110 for (i = 1; i < 7; ++i)
112 do_test (0, 16 << i, 2048, 23);
113 do_test (i, 64, 256, 23);
114 do_test (0, 16 << i, 2048, 0);
115 do_test (i, 64, 256, 0);
117 for (i = 1; i < 32; ++i)
119 do_test (0, i, i + 1, 23);
120 do_test (0, i, i + 1, 0);
123 return ret;
126 #include <support/test-driver.c>