THUAI6/CAPI/cpp/grpc/include/google/protobuf/endian.h

// Protocol Buffers - Google's data interchange format
// Copyright 2008 Google Inc.  All rights reserved.
// https://developers.google.com/protocol-buffers/
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#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__