1 /* Test hton/ntoh functions.
2 Copyright (C) 1997-2021 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 <https://www.gnu.org/licenses/>. */
21 #include <sys/types.h>
22 #include <netinet/in.h>
24 #if BYTE_ORDER == BIG_ENDIAN
25 # define TEST(orig, swapped, fct) \
26 if ((fct (orig)) != (orig)) { \
27 printf ("Failed for %s -> %#x\n", #fct "(" #orig ")", fct (orig)); \
30 #elif BYTE_ORDER == LITTLE_ENDIAN
31 # define TEST(orig, swapped, fct) \
32 if ((fct (orig)) != (swapped)) { \
33 printf ("Failed for %s -> %#x\n", #fct "(" #orig ")", fct (orig)); \
37 # error "Bah, what kind of system do you use?"
40 uint32_t lo
= 0x67452301;
41 uint16_t foo
= 0x1234;
48 TEST (0x67452301, 0x01234567, htonl
);
49 TEST (0x67452301, 0x01234567, (htonl
));
50 TEST (0x67452301, 0x01234567, ntohl
);
51 TEST (0x67452301, 0x01234567, (ntohl
));
53 TEST (lo
, 0x01234567, htonl
);
54 TEST (lo
, 0x01234567, (htonl
));
55 TEST (lo
, 0x01234567, ntohl
);
56 TEST (lo
, 0x01234567, (ntohl
));
58 TEST (0x1234, 0x3412, htons
);
59 TEST (0x1234, 0x3412, (htons
));
60 TEST (0x1234, 0x3412, ntohs
);
61 TEST (0x1234, 0x3412, (ntohs
));
63 TEST (foo
, 0x3412, htons
);
64 TEST (foo
, 0x3412, (htons
));
65 TEST (foo
, 0x3412, ntohs
);
66 TEST (foo
, 0x3412, (ntohs
));