1/* Copyright (C) 1992-2025 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 */