1/* Copyright (C) 1992-2020 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
3
4 The GNU C Library is free software; you can redistribute it and/or
5 modify it under the terms of the GNU Lesser General Public
6 License as published by the Free Software Foundation; either
7 version 2.1 of the License, or (at your option) any later version.
8
9 The GNU C Library is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 Lesser General Public License for more details.
13
14 You should have received a copy of the GNU Lesser General Public
15 License along with the GNU C Library; if not, see
16 <https://www.gnu.org/licenses/>. */
17
18#ifndef _ENDIAN_H
19#define _ENDIAN_H 1
20
21#include <features.h>
22
23/* Get the definitions of __*_ENDIAN, __BYTE_ORDER, and __FLOAT_WORD_ORDER. */
24#include <bits/endian.h>
25
26#ifdef __USE_MISC
27# define LITTLE_ENDIAN __LITTLE_ENDIAN
28# define BIG_ENDIAN __BIG_ENDIAN
29# define PDP_ENDIAN __PDP_ENDIAN
30# define BYTE_ORDER __BYTE_ORDER
31#endif
32
33#if defined __USE_MISC && !defined __ASSEMBLER__
34/* Conversion interfaces. */
35# include <bits/byteswap.h>
36# include <bits/uintn-identity.h>
37
38# if __BYTE_ORDER == __LITTLE_ENDIAN
39# define htobe16(x) __bswap_16 (x)
40# define htole16(x) __uint16_identity (x)
41# define be16toh(x) __bswap_16 (x)
42# define le16toh(x) __uint16_identity (x)
43
44# define htobe32(x) __bswap_32 (x)
45# define htole32(x) __uint32_identity (x)
46# define be32toh(x) __bswap_32 (x)
47# define le32toh(x) __uint32_identity (x)
48
49# define htobe64(x) __bswap_64 (x)
50# define htole64(x) __uint64_identity (x)
51# define be64toh(x) __bswap_64 (x)
52# define le64toh(x) __uint64_identity (x)
53
54# else
55# define htobe16(x) __uint16_identity (x)
56# define htole16(x) __bswap_16 (x)
57# define be16toh(x) __uint16_identity (x)
58# define le16toh(x) __bswap_16 (x)
59
60# define htobe32(x) __uint32_identity (x)
61# define htole32(x) __bswap_32 (x)
62# define be32toh(x) __uint32_identity (x)
63# define le32toh(x) __bswap_32 (x)
64
65# define htobe64(x) __uint64_identity (x)
66# define htole64(x) __bswap_64 (x)
67# define be64toh(x) __uint64_identity (x)
68# define le64toh(x) __bswap_64 (x)
69# endif
70#endif
71
72#endif /* endian.h */
73