std::chrono::floor(std::chrono::time_point)
From cppreference.com
< cpp | chrono | time point
| Defined in header
<chrono>
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||
| template <class ToDuration, class Clock, class Duration>
constexpr time_point<Clock, ToDuration> floor(const time_point<Clock, Duration>& tp); |
(since C++17) | |
Returns the largest time point t representable in ToDuration that is smaller or equal to tp.
The function does not participate in the overload resolution unless ToDuration is an specialization of std::chrono::duration.
Contents |
[edit] Parameters
| tp | - | time point to round down |
[edit] Return value
d rounded down to a the next time point using duration of type ToDuration.
[edit] Possible implementation
template <class T> struct is_duration : std::false_type {}; template <class Rep, class Period> struct is_duration< std::chrono::duration<Rep, Period>> : std::true_type {}; template <class To, class Clock, class FromDuration, class = std::enable_if_t<is_duration<To>{}>> constexpr std::chrono::time_point<Clock, To> floor(const std::chrono::time_point<Clock, FromDuration>& tp) { return std::chrono::time_point<Clock, To>{ std::chrono::floor<To>(tp.time_since_epoch())}; } |
[edit] Example
| This section is incomplete Reason: no example |
[edit] See also
| converts a time point to another time point on the same clock, with a different duration (function template) |
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| (C++17)
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converts a time_point to another, rounding up (function template) |
| (C++17)
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converts a time_point to another, rounding to nearest, ties to even (function template) |
| (C++17)
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converts a duration to another, rounding down (function template) |
| nearest integer not greater than the given value (function) |