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// Copyright (c) 2014-2022 The Bitcoin Core developers
// Distributed under the MIT software license, see the accompanying
// file COPYING or http://www.opensource.org/licenses/mit-license.php.
#ifndef BITCOIN_COMPAT_ENDIAN_H
#define BITCOIN_COMPAT_ENDIAN_H
#if defined(HAVE_CONFIG_H)
#include <config/bitcoin-config.h>
#endif
#include <compat/byteswap.h>
#include <cstdint>
#if defined(HAVE_ENDIAN_H)
#include <endian.h>
#elif defined(HAVE_SYS_ENDIAN_H)
#include <sys/endian.h>
#endif
#ifndef HAVE_CONFIG_H
// While not technically a supported configuration, defaulting to defining these
// DECLs when we were compiled without autotools makes it easier for other build
// systems to build things like libbitcoinconsensus for strange targets.
#ifdef htobe16
#define HAVE_DECL_HTOBE16 1
#endif
#ifdef htole16
#define HAVE_DECL_HTOLE16 1
#endif
#ifdef be16toh
#define HAVE_DECL_BE16TOH 1
#endif
#ifdef le16toh
#define HAVE_DECL_LE16TOH 1
#endif
#ifdef htobe32
#define HAVE_DECL_HTOBE32 1
#endif
#ifdef htole32
#define HAVE_DECL_HTOLE32 1
#endif
#ifdef be32toh
#define HAVE_DECL_BE32TOH 1
#endif
#ifdef le32toh
#define HAVE_DECL_LE32TOH 1
#endif
#ifdef htobe64
#define HAVE_DECL_HTOBE64 1
#endif
#ifdef htole64
#define HAVE_DECL_HTOLE64 1
#endif
#ifdef be64toh
#define HAVE_DECL_BE64TOH 1
#endif
#ifdef le64toh
#define HAVE_DECL_LE64TOH 1
#endif
#endif // HAVE_CONFIG_H
#if defined(WORDS_BIGENDIAN)
#if HAVE_DECL_HTOBE16 == 0
inline uint16_t htobe16(uint16_t host_16bits)
{
return host_16bits;
}
#endif // HAVE_DECL_HTOBE16
#if HAVE_DECL_HTOLE16 == 0
inline uint16_t htole16(uint16_t host_16bits)
{
return bswap_16(host_16bits);
}
#endif // HAVE_DECL_HTOLE16
#if HAVE_DECL_BE16TOH == 0
inline uint16_t be16toh(uint16_t big_endian_16bits)
{
return big_endian_16bits;
}
#endif // HAVE_DECL_BE16TOH
#if HAVE_DECL_LE16TOH == 0
inline uint16_t le16toh(uint16_t little_endian_16bits)
{
return bswap_16(little_endian_16bits);
}
#endif // HAVE_DECL_LE16TOH
#if HAVE_DECL_HTOBE32 == 0
inline uint32_t htobe32(uint32_t host_32bits)
{
return host_32bits;
}
#endif // HAVE_DECL_HTOBE32
#if HAVE_DECL_HTOLE32 == 0
inline uint32_t htole32(uint32_t host_32bits)
{
return bswap_32(host_32bits);
}
#endif // HAVE_DECL_HTOLE32
#if HAVE_DECL_BE32TOH == 0
inline uint32_t be32toh(uint32_t big_endian_32bits)
{
return big_endian_32bits;
}
#endif // HAVE_DECL_BE32TOH
#if HAVE_DECL_LE32TOH == 0
inline uint32_t le32toh(uint32_t little_endian_32bits)
{
return bswap_32(little_endian_32bits);
}
#endif // HAVE_DECL_LE32TOH
#if HAVE_DECL_HTOBE64 == 0
inline uint64_t htobe64(uint64_t host_64bits)
{
return host_64bits;
}
#endif // HAVE_DECL_HTOBE64
#if HAVE_DECL_HTOLE64 == 0
inline uint64_t htole64(uint64_t host_64bits)
{
return bswap_64(host_64bits);
}
#endif // HAVE_DECL_HTOLE64
#if HAVE_DECL_BE64TOH == 0
inline uint64_t be64toh(uint64_t big_endian_64bits)
{
return big_endian_64bits;
}
#endif // HAVE_DECL_BE64TOH
#if HAVE_DECL_LE64TOH == 0
inline uint64_t le64toh(uint64_t little_endian_64bits)
{
return bswap_64(little_endian_64bits);
}
#endif // HAVE_DECL_LE64TOH
#else // WORDS_BIGENDIAN
#if HAVE_DECL_HTOBE16 == 0
inline uint16_t htobe16(uint16_t host_16bits)
{
return bswap_16(host_16bits);
}
#endif // HAVE_DECL_HTOBE16
#if HAVE_DECL_HTOLE16 == 0
inline uint16_t htole16(uint16_t host_16bits)
{
return host_16bits;
}
#endif // HAVE_DECL_HTOLE16
#if HAVE_DECL_BE16TOH == 0
inline uint16_t be16toh(uint16_t big_endian_16bits)
{
return bswap_16(big_endian_16bits);
}
#endif // HAVE_DECL_BE16TOH
#if HAVE_DECL_LE16TOH == 0
inline uint16_t le16toh(uint16_t little_endian_16bits)
{
return little_endian_16bits;
}
#endif // HAVE_DECL_LE16TOH
#if HAVE_DECL_HTOBE32 == 0
inline uint32_t htobe32(uint32_t host_32bits)
{
return bswap_32(host_32bits);
}
#endif // HAVE_DECL_HTOBE32
#if HAVE_DECL_HTOLE32 == 0
inline uint32_t htole32(uint32_t host_32bits)
{
return host_32bits;
}
#endif // HAVE_DECL_HTOLE32
#if HAVE_DECL_BE32TOH == 0
inline uint32_t be32toh(uint32_t big_endian_32bits)
{
return bswap_32(big_endian_32bits);
}
#endif // HAVE_DECL_BE32TOH
#if HAVE_DECL_LE32TOH == 0
inline uint32_t le32toh(uint32_t little_endian_32bits)
{
return little_endian_32bits;
}
#endif // HAVE_DECL_LE32TOH
#if HAVE_DECL_HTOBE64 == 0
inline uint64_t htobe64(uint64_t host_64bits)
{
return bswap_64(host_64bits);
}
#endif // HAVE_DECL_HTOBE64
#if HAVE_DECL_HTOLE64 == 0
inline uint64_t htole64(uint64_t host_64bits)
{
return host_64bits;
}
#endif // HAVE_DECL_HTOLE64
#if HAVE_DECL_BE64TOH == 0
inline uint64_t be64toh(uint64_t big_endian_64bits)
{
return bswap_64(big_endian_64bits);
}
#endif // HAVE_DECL_BE64TOH
#if HAVE_DECL_LE64TOH == 0
inline uint64_t le64toh(uint64_t little_endian_64bits)
{
return little_endian_64bits;
}
#endif // HAVE_DECL_LE64TOH
#endif // WORDS_BIGENDIAN
#endif // BITCOIN_COMPAT_ENDIAN_H
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