From Jason Turner

[time.clock.tai.members]

C++17 → C++20 1.2 KB 52 lines
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Archived: C++17 | C++20
Markdown: C++17 | C++20
Explore in Adventure Game
C++ Weekly: Ep 397

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+ #### Member functions <a id="time.clock.tai.members">[[time.clock.tai.members]]</a>
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+
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+ ``` cpp
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+ static time_point now();
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+ ```
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+
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+ *Returns:* `from_utc(utc_clock::now())`, or a more accurate value of
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+ `tai_time`.
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+
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+ ``` cpp
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+ template<class Duration>
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+ static utc_time<common_type_t<Duration, seconds>>
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+ to_utc(const tai_time<Duration>& t) noexcept;
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+ ```
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+
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+ *Returns:*
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+
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+ ``` cpp
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+ utc_time<common_type_t<Duration, seconds>>{t.time_since_epoch()} - 378691210s
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+ ```
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+
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+ [*Note 1*:
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+
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+ ``` cpp
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+ 378691210s == sys_days{1970y/January/1} - sys_days{1958y/January/1} + 10s
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+ ```
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+
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+ — *end note*]
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+
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+ ``` cpp
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+ template<class Duration>
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+ static tai_time<common_type_t<Duration, seconds>>
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+ from_utc(const utc_time<Duration>& t) noexcept;
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+ ```
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+
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+ *Returns:*
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+
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+ ``` cpp
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+ tai_time<common_type_t<Duration, seconds>>{t.time_since_epoch()} + 378691210s
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+ ```
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+
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+ [*Note 2*:
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+
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+ ``` cpp
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+ 378691210s == sys_days{1970y/January/1} - sys_days{1958y/January/1} + 10s
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+ ```
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+
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+ — *end note*]
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+