endian.h raw

   1  // Copyright (c) 2014-present The Bitcoin Core developers
   2  // Distributed under the MIT software license, see the accompanying
   3  // file COPYING or http://www.opensource.org/licenses/mit-license.php.
   4  
   5  #ifndef BITCOIN_COMPAT_ENDIAN_H
   6  #define BITCOIN_COMPAT_ENDIAN_H
   7  
   8  #include <compat/byteswap.h>
   9  
  10  #include <bit>
  11  #include <cstdint>
  12  
  13  inline BSWAP_CONSTEXPR uint16_t htobe16_internal(uint16_t host_16bits)
  14  {
  15      if constexpr (std::endian::native == std::endian::little) return internal_bswap_16(host_16bits);
  16          else return host_16bits;
  17  }
  18  inline BSWAP_CONSTEXPR uint16_t htole16_internal(uint16_t host_16bits)
  19  {
  20      if constexpr (std::endian::native == std::endian::big) return internal_bswap_16(host_16bits);
  21          else return host_16bits;
  22  }
  23  inline BSWAP_CONSTEXPR uint16_t be16toh_internal(uint16_t big_endian_16bits)
  24  {
  25      if constexpr (std::endian::native == std::endian::little) return internal_bswap_16(big_endian_16bits);
  26          else return big_endian_16bits;
  27  }
  28  inline BSWAP_CONSTEXPR uint16_t le16toh_internal(uint16_t little_endian_16bits)
  29  {
  30      if constexpr (std::endian::native == std::endian::big) return internal_bswap_16(little_endian_16bits);
  31          else return little_endian_16bits;
  32  }
  33  inline BSWAP_CONSTEXPR uint32_t htobe32_internal(uint32_t host_32bits)
  34  {
  35      if constexpr (std::endian::native == std::endian::little) return internal_bswap_32(host_32bits);
  36          else return host_32bits;
  37  }
  38  inline BSWAP_CONSTEXPR uint32_t htole32_internal(uint32_t host_32bits)
  39  {
  40      if constexpr (std::endian::native == std::endian::big) return internal_bswap_32(host_32bits);
  41          else return host_32bits;
  42  }
  43  inline BSWAP_CONSTEXPR uint32_t be32toh_internal(uint32_t big_endian_32bits)
  44  {
  45      if constexpr (std::endian::native == std::endian::little) return internal_bswap_32(big_endian_32bits);
  46          else return big_endian_32bits;
  47  }
  48  inline BSWAP_CONSTEXPR uint32_t le32toh_internal(uint32_t little_endian_32bits)
  49  {
  50      if constexpr (std::endian::native == std::endian::big) return internal_bswap_32(little_endian_32bits);
  51          else return little_endian_32bits;
  52  }
  53  inline BSWAP_CONSTEXPR uint64_t htobe64_internal(uint64_t host_64bits)
  54  {
  55      if constexpr (std::endian::native == std::endian::little) return internal_bswap_64(host_64bits);
  56          else return host_64bits;
  57  }
  58  inline BSWAP_CONSTEXPR uint64_t htole64_internal(uint64_t host_64bits)
  59  {
  60      if constexpr (std::endian::native == std::endian::big) return internal_bswap_64(host_64bits);
  61          else return host_64bits;
  62  }
  63  inline BSWAP_CONSTEXPR uint64_t be64toh_internal(uint64_t big_endian_64bits)
  64  {
  65      if constexpr (std::endian::native == std::endian::little) return internal_bswap_64(big_endian_64bits);
  66          else return big_endian_64bits;
  67  }
  68  inline BSWAP_CONSTEXPR uint64_t le64toh_internal(uint64_t little_endian_64bits)
  69  {
  70      if constexpr (std::endian::native == std::endian::big) return internal_bswap_64(little_endian_64bits);
  71          else return little_endian_64bits;
  72  }
  73  
  74  #endif // BITCOIN_COMPAT_ENDIAN_H
  75