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Improve uuid_clock::from_sys, to_sys

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This commit is contained in:
Peter Dimov
2024-05-04 04:33:21 +03:00
parent b20a0ba4d2
commit 64d070bf95
1 changed files with 6 additions and 7 deletions
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13
include/boost/uuid/uuid_clock.hpp
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@@ -25,8 +25,8 @@ public:
static time_point now() noexcept;
static time_point from_sys( std::chrono::system_clock::time_point const& tp ) noexcept;
static std::chrono::system_clock::time_point to_sys( time_point const& tp ) noexcept;
template<class Duration> static time_point from_sys( std::chrono::time_point<std::chrono::system_clock, Duration> const& tp ) noexcept;
static std::chrono::time_point<std::chrono::system_clock, duration> to_sys( time_point const& tp ) noexcept;
static time_point from_timestamp( std::uint64_t timestamp ) noexcept;
static std::uint64_t to_timestamp( time_point const& tp ) noexcept;
@@ -37,7 +37,8 @@ inline uuid_clock::time_point uuid_clock::now() noexcept
return from_sys( std::chrono::system_clock::now() );
}
inline uuid_clock::time_point uuid_clock::from_sys( std::chrono::system_clock::time_point const& tp ) noexcept
template<class Duration>
inline uuid_clock::time_point uuid_clock::from_sys( std::chrono::time_point<std::chrono::system_clock, Duration> const& tp ) noexcept
{
using days = std::chrono::duration< std::int32_t, std::ratio<86400> >;
constexpr auto epoch_diff = days( 141427 );
@@ -47,14 +48,12 @@ inline uuid_clock::time_point uuid_clock::from_sys( std::chrono::system_clock::t
return uuid_clock::time_point( uuid_since );
}
inline std::chrono::system_clock::time_point uuid_clock::to_sys( time_point const& tp ) noexcept
inline std::chrono::time_point<std::chrono::system_clock, uuid_clock::duration> uuid_clock::to_sys( time_point const& tp ) noexcept
{
using days = std::chrono::duration< std::int32_t, std::ratio<86400> >;
constexpr auto epoch_diff = days( 141427 );
auto sys_since = std::chrono::duration_cast<std::chrono::system_clock::duration>( tp.time_since_epoch() - epoch_diff );
return std::chrono::system_clock::time_point( sys_since );
return std::chrono::time_point<std::chrono::system_clock, duration>( tp.time_since_epoch() - epoch_diff );
}
inline uuid_clock::time_point uuid_clock::from_timestamp( std::uint64_t timestamp ) noexcept