1/* Verify that ftime is sane.
2 Copyright (C) 2014-2022 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
4
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.
9
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.
14
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 <https://www.gnu.org/licenses/>. */
18
19#include <features.h>
20#include <sys/timeb.h>
21#include <libc-diag.h>
22
23#include <support/check.h>
24
25static int
26do_test (void)
27{
28 struct timeb prev, curr = {.time = 0, .millitm = 0};
29 int sec = 0;
30
31 while (sec != 3)
32 {
33 prev = curr;
34
35 /* ftime was deprecated on 2.31. */
36 DIAG_PUSH_NEEDS_COMMENT;
37 DIAG_IGNORE_NEEDS_COMMENT (4.9, "-Wdeprecated-declarations");
38
39 TEST_COMPARE (ftime (&curr), 0);
40
41 DIAG_POP_NEEDS_COMMENT;
42
43 TEST_VERIFY (curr.time >= prev.time);
44
45 if (curr.time == prev.time)
46 TEST_VERIFY (curr.millitm >= prev.millitm);
47
48 if (curr.time > prev.time)
49 sec ++;
50 }
51 return 0;
52}
53
54#include <support/test-driver.c>
55

source code of glibc/time/tst-ftime.c