// Protocol Buffers - Google's data interchange format

// Copyright 2008 Google Inc.  All rights reserved.

// https://developers.google.com/protocol-buffers/

//

// Redistribution and use in source and binary forms, with or without

// modification, are permitted provided that the following conditions are

// met:

//

//     * Redistributions of source code must retain the above copyright

// notice, this list of conditions and the following disclaimer.

//     * Redistributions in binary form must reproduce the above

// copyright notice, this list of conditions and the following disclaimer

// in the documentation and/or other materials provided with the

// distribution.

//     * Neither the name of Google Inc. nor the names of its

// contributors may be used to endorse or promote products derived from

// this software without specific prior written permission.

//

// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS

// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT

// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR

// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT

// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,

// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT

// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,

// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY

// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT

// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE

// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

#ifndef GOOGLE_PROTOBUF_ENDIAN_H__

#define GOOGLE_PROTOBUF_ENDIAN_H__

#if defined(_MSC_VER)

#include <stdlib.h>

#endif

#include <cstdint>

// Must be included last.

#include "google/protobuf/port_def.inc"

namespace google {

namespace protobuf {

namespace internal {

inline uint64_t BSwap64(uint64_t host_int) {

#if defined(PROTOBUF_BUILTIN_BSWAP64)

  return PROTOBUF_BUILTIN_BSWAP64(host_int);

#elif defined(_MSC_VER)

  return _byteswap_uint64(host_int);

#else

  return (((host_int & uint64_t{0xFF}) << 56) |

          ((host_int & uint64_t{0xFF00}) << 40) |

          ((host_int & uint64_t{0xFF0000}) << 24) |

          ((host_int & uint64_t{0xFF000000}) << 8) |

          ((host_int & uint64_t{0xFF00000000}) >> 8) |

          ((host_int & uint64_t{0xFF0000000000}) >> 24) |

          ((host_int & uint64_t{0xFF000000000000}) >> 40) |

          ((host_int & uint64_t{0xFF00000000000000}) >> 56));

#endif

}

inline uint32_t BSwap32(uint32_t host_int) {

#if defined(PROTOBUF_BUILTIN_BSWAP32)

  return PROTOBUF_BUILTIN_BSWAP32(host_int);

#elif defined(_MSC_VER)

  return _byteswap_ulong(host_int);

#else

  return (((host_int & uint32_t{0xFF}) << 24) |

          ((host_int & uint32_t{0xFF00}) << 8) |

          ((host_int & uint32_t{0xFF0000}) >> 8) |

          ((host_int & uint32_t{0xFF000000}) >> 24));

#endif

}

inline uint16_t BSwap16(uint16_t host_int) {

#if defined(PROTOBUF_BUILTIN_BSWAP16)

  return PROTOBUF_BUILTIN_BSWAP16(host_int);

#elif defined(_MSC_VER)

  return _byteswap_ushort(host_int);

#else

  return (((host_int & uint16_t{0xFF}) << 8) |

          ((host_int & uint16_t{0xFF00}) >> 8));

#endif

}

namespace little_endian {

inline uint16_t FromHost(uint16_t value) {

#if defined(PROTOBUF_BIG_ENDIAN)

  return BSwap16(value);

#else

  return value;

#endif

}

inline uint32_t FromHost(uint32_t value) {

#if defined(PROTOBUF_BIG_ENDIAN)

  return BSwap32(value);

#else

  return value;

#endif

}

inline uint64_t FromHost(uint64_t value) {

#if defined(PROTOBUF_BIG_ENDIAN)

  return BSwap64(value);

#else

  return value;

#endif

}

inline uint16_t ToHost(uint16_t value) {

#if defined(PROTOBUF_BIG_ENDIAN)

  return BSwap16(value);

#else

  return value;

#endif

}

inline uint32_t ToHost(uint32_t value) {

#if defined(PROTOBUF_BIG_ENDIAN)

  return BSwap32(value);

#else

  return value;

#endif

}

inline uint64_t ToHost(uint64_t value) {

#if defined(PROTOBUF_BIG_ENDIAN)

  return BSwap64(value);

#else

  return value;

#endif

}

}  // namespace little_endian

namespace big_endian {

inline uint16_t FromHost(uint16_t value) {

#if defined(PROTOBUF_BIG_ENDIAN)

  return value;

#else

  return BSwap16(value);

#endif

}

inline uint32_t FromHost(uint32_t value) {

#if defined(PROTOBUF_BIG_ENDIAN)

  return value;

#else

  return BSwap32(value);

#endif

}

inline uint64_t FromHost(uint64_t value) {

#if defined(PROTOBUF_BIG_ENDIAN)

  return value;

#else

  return BSwap64(value);

#endif

}

inline uint16_t ToHost(uint16_t value) {

#if defined(PROTOBUF_BIG_ENDIAN)

  return value;

#else

  return BSwap16(value);

#endif

}

inline uint32_t ToHost(uint32_t value) {

#if defined(PROTOBUF_BIG_ENDIAN)

  return value;

#else

  return BSwap32(value);

#endif

}

inline uint64_t ToHost(uint64_t value) {

#if defined(PROTOBUF_BIG_ENDIAN)

  return value;

#else

  return BSwap64(value);

#endif

}

}  // namespace big_endian

}  // namespace internal

}  // namespace protobuf

}  // namespace google

#include "google/protobuf/port_undef.inc"

#endif  // GOOGLE_PROTOBUF_ENDIAN_H__