uuid/detail/uuid_uint128.ipp

0001 #ifndef BOOST_UUID_DETAIL_UUID_UINT128_IPP_INCLUDED
0002 #define BOOST_UUID_DETAIL_UUID_UINT128_IPP_INCLUDED
0003
0004 // Copyright 2024 Peter Dimov
0005 // Distributed under the Boost Software License, Version 1.0.
0006 // https://www.boost.org/LICENSE_1_0.txt
0007
0008 #include <boost/uuid/detail/endian.hpp>
0009
0010 #if defined(BOOST_UUID_REPORT_IMPLEMENTATION)
0011
0012 #include <boost/config/pragma_message.hpp>
0013 BOOST_PRAGMA_MESSAGE( "Using uuid_uint128.ipp" )
0014
0015 #endif
0016
0017 namespace boost {
0018 namespace uuids {
0019
0020 inline bool uuid::is_nil() const noexcept
0021 {
0022     __uint128_t v = detail::load_native_u128( this->data );
0023     return v == 0;
0024 }
0025
0026 inline void uuid::swap( uuid& rhs ) noexcept
0027 {
0028     __uint128_t v1 = detail::load_native_u128( this->data );
0029     __uint128_t v2 = detail::load_native_u128( rhs.data );
0030
0031     detail::store_native_u128( this->data, v2 );
0032     detail::store_native_u128( rhs.data, v1 );
0033 }
0034
0035 inline bool operator==( uuid const& lhs, uuid const& rhs ) noexcept
0036 {
0037     __uint128_t v1 = detail::load_native_u128( lhs.data );
0038     __uint128_t v2 = detail::load_native_u128( rhs.data );
0039
0040     return v1 == v2;
0041 }
0042
0043 inline bool operator<( uuid const& lhs, uuid const& rhs ) noexcept
0044 {
0045     __uint128_t v1 = detail::load_big_u128( lhs.data );
0046     __uint128_t v2 = detail::load_big_u128( rhs.data );
0047
0048     return v1 < v2;
0049 }
0050
0051 #if defined(BOOST_UUID_HAS_THREE_WAY_COMPARISON)
0052
0053 inline std::strong_ordering operator<=> (uuid const& lhs, uuid const& rhs) noexcept
0054 {
0055     __uint128_t v1 = detail::load_big_u128( lhs.data );
0056     __uint128_t v2 = detail::load_big_u128( rhs.data );
0057
0058     return v1 <=> v2;
0059 }
0060
0061 #endif
0062
0063 } // namespace uuids
0064 } // namespace boost
0065
0066 #endif // BOOST_UUID_DETAIL_UUID_UINT128_IPP_INCLUDED