62 lines
1.6 KiB
C
62 lines
1.6 KiB
C
/* endian.h - portable endian routines
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*
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* Copyright (C) 2005-2008 Natanael Copa <n@tanael.org>
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* Copyright (C) 2008-2011 Timo Teräs <timo.teras@iki.fi>
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* Copyright (C) 2011 Rich Felker
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* All rights reserved.
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*
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* SPDX-License-Identifier: GPL-2.0-only
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*/
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#ifdef __linux__
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# include_next <endian.h>
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#else
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#pragma once
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#include <stdint.h>
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static __inline uint16_t __portable_bswap16(uint16_t __x)
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{
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return (__x<<8) | (__x>>8);
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}
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static __inline uint32_t __portable_bswap32(uint32_t __x)
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{
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return (__x>>24) | (__x>>8&0xff00) | (__x<<8&0xff0000) | (__x<<24);
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}
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static __inline uint64_t __portable_bswap64(uint64_t __x)
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{
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return (__portable_bswap32(__x)+0ULL)<<32 | __portable_bswap32(__x>>32);
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}
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#if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
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# define htobe16(x) __portable_bswap16(x)
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# define be16toh(x) __portable_bswap16(x)
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# define htobe32(x) __portable_bswap32(x)
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# define be32toh(x) __portable_bswap32(x)
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# define htobe64(x) __portable_bswap64(x)
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# define be64toh(x) __portable_bswap64(x)
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# define htole16(x) (uint16_t)(x)
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# define le16toh(x) (uint16_t)(x)
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# define htole32(x) (uint32_t)(x)
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# define le32toh(x) (uint32_t)(x)
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# define htole64(x) (uint64_t)(x)
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# define le64toh(x) (uint64_t)(x)
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#else
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# define htobe16(x) (uint16_t)(x)
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# define be16toh(x) (uint16_t)(x)
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# define htobe32(x) (uint32_t)(x)
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# define be32toh(x) (uint32_t)(x)
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# define htobe64(x) (uint64_t)(x)
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# define be64toh(x) (uint64_t)(x)
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# define htole16(x) __portable_bswap16(x)
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# define le16toh(x) __portable_bswap16(x)
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# define htole32(x) __portable_bswap32(x)
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# define le32toh(x) __portable_bswap32(x)
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# define htole64(x) __portable_bswap64(x)
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# define le64toh(x) __portable_bswap64(x)
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#endif
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#endif
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