tst_byteswap.c revision d1154eb460efe588eaed3d439c1caaca149fa362 
1/*
2 * This testing program makes sure the byteswap functions work
3 *
4 * Copyright (C) 2000 by Theodore Ts'o.
5 *
6 * %Begin-Header%
7 * This file may be redistributed under the terms of the GNU Library
8 * General Public License, version 2.
9 * %End-Header%
10 */
11
12#include "config.h"
13#include <stdio.h>
14#include <string.h>
15#if HAVE_UNISTD_H
16#include <unistd.h>
17#endif
18#include <fcntl.h>
19#include <time.h>
20#include <sys/stat.h>
21#include <sys/types.h>
22#if HAVE_ERRNO_H
23#include <errno.h>
24#endif
25
26#include "ext2_fs.h"
27#include "ext2fs.h"
28
29__u16 test1[] = {
30	0x0001, 0x0100,
31	0x1234, 0x3412,
32	0xff00, 0x00ff,
33	0x4000, 0x0040,
34	0xfeff, 0xfffe,
35	0x0000, 0x0000
36	};
37
38__u32 test2[] = {
39	0x00000001, 0x01000000,
40	0x80000000, 0x00000080,
41	0x12345678, 0x78563412,
42	0xffff0000, 0x0000ffff,
43	0x00ff0000, 0x0000ff00,
44	0xff000000, 0x000000ff,
45	0x00000000, 0x00000000
46	};
47
48int main(int argc, char **argv)
49{
50	int	i;
51	int	errors = 0;
52
53	printf("Testing ext2fs_swab16\n");
54	i=0;
55	do {
56		printf("swab16(0x%04x) = 0x%04x\n", test1[i],
57		       ext2fs_swab16(test1[i]));
58		if (ext2fs_swab16(test1[i]) != test1[i+1]) {
59			printf("Error!!!   %04x != %04x\n",
60			       ext2fs_swab16(test1[i]), test1[i+1]);
61			errors++;
62		}
63		if (ext2fs_swab16(test1[i+1]) != test1[i]) {
64			printf("Error!!!   %04x != %04x\n",
65			       ext2fs_swab16(test1[i+1]), test1[i]);
66			errors++;
67		}
68		i += 2;
69	} while (test1[i] != 0);
70
71	printf("Testing ext2fs_swab32\n");
72	i = 0;
73	do {
74		printf("swab32(0x%08x) = 0x%08x\n", test2[i],
75		       ext2fs_swab32(test2[i]));
76		if (ext2fs_swab32(test2[i]) != test2[i+1]) {
77			printf("Error!!!   %04x != %04x\n",
78			       ext2fs_swab32(test2[i]), test2[i+1]);
79			errors++;
80		}
81		if (ext2fs_swab32(test2[i+1]) != test2[i]) {
82			printf("Error!!!   %04x != %04x\n",
83			       ext2fs_swab32(test2[i+1]), test2[i]);
84			errors++;
85		}
86		i += 2;
87	} while (test2[i] != 0);
88
89	if (!errors)
90		printf("No errors found in the byteswap implementation!\n");
91
92	return errors;
93}
94