glibc/string/endian.h

73 lines
2.2 KiB
C

/* Copyright (C) 1992-2020 Free Software Foundation, Inc.
This file is part of the GNU C Library.
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, see
<https://www.gnu.org/licenses/>. */
#ifndef _ENDIAN_H
#define _ENDIAN_H 1
#include <features.h>
/* Get the definitions of __*_ENDIAN, __BYTE_ORDER, and __FLOAT_WORD_ORDER. */
#include <bits/endian.h>
#ifdef __USE_MISC
# define LITTLE_ENDIAN __LITTLE_ENDIAN
# define BIG_ENDIAN __BIG_ENDIAN
# define PDP_ENDIAN __PDP_ENDIAN
# define BYTE_ORDER __BYTE_ORDER
#endif
#if defined __USE_MISC && !defined __ASSEMBLER__
/* Conversion interfaces. */
# include <bits/byteswap.h>
# include <bits/uintn-identity.h>
# if __BYTE_ORDER == __LITTLE_ENDIAN
# define htobe16(x) __bswap_16 (x)
# define htole16(x) __uint16_identity (x)
# define be16toh(x) __bswap_16 (x)
# define le16toh(x) __uint16_identity (x)
# define htobe32(x) __bswap_32 (x)
# define htole32(x) __uint32_identity (x)
# define be32toh(x) __bswap_32 (x)
# define le32toh(x) __uint32_identity (x)
# define htobe64(x) __bswap_64 (x)
# define htole64(x) __uint64_identity (x)
# define be64toh(x) __bswap_64 (x)
# define le64toh(x) __uint64_identity (x)
# else
# define htobe16(x) __uint16_identity (x)
# define htole16(x) __bswap_16 (x)
# define be16toh(x) __uint16_identity (x)
# define le16toh(x) __bswap_16 (x)
# define htobe32(x) __uint32_identity (x)
# define htole32(x) __bswap_32 (x)
# define be32toh(x) __uint32_identity (x)
# define le32toh(x) __bswap_32 (x)
# define htobe64(x) __uint64_identity (x)
# define htole64(x) __bswap_64 (x)
# define be64toh(x) __uint64_identity (x)
# define le64toh(x) __bswap_64 (x)
# endif
#endif
#endif /* endian.h */