1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
|
/* Copyright (C) 1994, 1997, 2000 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Joel Sherrill (jsherril@redstone-emh2.army.mil),
On-Line Applications Research Corporation.
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, write to the Free
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
02111-1307 USA. */
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
int
main (void)
{
int failures = 0;
int i;
auto void try (int value, int expected);
void try (int value, int expected)
{
if (ffs (value) != expected)
{
fprintf (stderr, "%#x expected %d got %d\n",
value, expected, ffs (value));
++failures;
}
}
try (0, 0);
for (i=0 ; i<32 ; i++)
try (1<<i, i+1);
for (i=0 ; i<32 ; i++)
try ((~0 >> i) << i, i+1);
try (0x80008000, 16);
if (failures)
printf ("Test FAILED! %d failure%s.\n", failures, &"s"[failures == 1]);
else
puts ("Test succeeded.");
return failures;
}
|
GitWeb
