endian.h

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// Copyright (c) 2014-2016 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
 
#include <compat/byteswap.h>
 
#include <bit>
#include <cstdint>
 
inline BSWAP_CONSTEXPR uint16_t htobe16_internal(uint16_t host_16bits) {
    if constexpr (std::endian::native == std::endian::little) {
        return internal_bswap_16(host_16bits);
    } else {
        return host_16bits;
    }
}
inline BSWAP_CONSTEXPR uint16_t htole16_internal(uint16_t host_16bits) {
    if constexpr (std::endian::native == std::endian::big) {
        return internal_bswap_16(host_16bits);
    } else {
        return host_16bits;
    }
}
inline BSWAP_CONSTEXPR uint16_t be16toh_internal(uint16_t big_endian_16bits) {
    if constexpr (std::endian::native == std::endian::little) {
        return internal_bswap_16(big_endian_16bits);
    } else {
        return big_endian_16bits;
    }
}
inline BSWAP_CONSTEXPR uint16_t
le16toh_internal(uint16_t little_endian_16bits) {
    if constexpr (std::endian::native == std::endian::big) {
        return internal_bswap_16(little_endian_16bits);
    } else {
        return little_endian_16bits;
    }
}
inline BSWAP_CONSTEXPR uint32_t htobe32_internal(uint32_t host_32bits) {
    if constexpr (std::endian::native == std::endian::little) {
        return internal_bswap_32(host_32bits);
    } else {
        return host_32bits;
    }
}
inline BSWAP_CONSTEXPR uint32_t htole32_internal(uint32_t host_32bits) {
    if constexpr (std::endian::native == std::endian::big) {
        return internal_bswap_32(host_32bits);
    } else {
        return host_32bits;
    }
}
inline BSWAP_CONSTEXPR uint32_t be32toh_internal(uint32_t big_endian_32bits) {
    if constexpr (std::endian::native == std::endian::little) {
        return internal_bswap_32(big_endian_32bits);
    } else {
        return big_endian_32bits;
    }
}
inline BSWAP_CONSTEXPR uint32_t
le32toh_internal(uint32_t little_endian_32bits) {
    if constexpr (std::endian::native == std::endian::big) {
        return internal_bswap_32(little_endian_32bits);
    } else {
        return little_endian_32bits;
    }
}
inline BSWAP_CONSTEXPR uint64_t htobe64_internal(uint64_t host_64bits) {
    if constexpr (std::endian::native == std::endian::little) {
        return internal_bswap_64(host_64bits);
    } else {
        return host_64bits;
    }
}
inline BSWAP_CONSTEXPR uint64_t htole64_internal(uint64_t host_64bits) {
    if constexpr (std::endian::native == std::endian::big) {
        return internal_bswap_64(host_64bits);
    } else {
        return host_64bits;
    }
}
inline BSWAP_CONSTEXPR uint64_t be64toh_internal(uint64_t big_endian_64bits) {
    if constexpr (std::endian::native == std::endian::little) {
        return internal_bswap_64(big_endian_64bits);
    } else {
        return big_endian_64bits;
    }
}
inline BSWAP_CONSTEXPR uint64_t
le64toh_internal(uint64_t little_endian_64bits) {
    if constexpr (std::endian::native == std::endian::big) {
        return internal_bswap_64(little_endian_64bits);
    } else {
        return little_endian_64bits;
    }
}
 
#endif // BITCOIN_COMPAT_ENDIAN_H