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std::chrono::round(std::chrono::time_point)

Std：：Time：：整数%28 std：：time：：time[医]点%29

Defined in header ​​
template <class ToDuration, class Clock, class Duration> constexpr time_point<Clock, ToDuration> round(const time_point<Clock, Duration>& tp​(since C++17)

返回最近的时间点tp可在ToDuration甚至在半途而废的情况下。

该函数不参与重载解析，除非ToDuration是std::chrono::duration和std::chrono::treat_as_floating_point<typename ToDuration::rep>::value是false...

参数

tp-time point to round to nearest

返回值

d使用类型的持续时间舍入到最近的时间点ToDuration甚至在半途而废的情况下。

可能的实施

模板<class T>结构是[医]持续时间：STD：：false[医]类型{}；模板<类Rep，类周期>结构是[医]持续时间<std：：time：：time<rep，time>>：std：：true[医]类型{}；模板<class到，类时钟，类FromDuration，class=std：：Enable[医]如果[医]T<IS[医]持续时间<To>{}&%21 std：：rono：：[医]如[医]浮[医]点<typename To::rep>{}>>std：：time：：time[医]点<Clock，to>24%28 Const STD：：Time：：Time[医]点<时钟，倒转>&tp%29{返回std：：chrono：：time[医]点<时钟，to>{std：：rono：：圆形<To>%28 tp.time[医]自[医]EIRCH%28%29%29}；}

*。

例

另见

time_point_castconverts a time point to another time point on the same clock, with a different duration (function template)
ceil(std::chrono::time_point) (C++17)converts a time_point to another, rounding up (function template)
floor(std::chrono::time_point) (C++17)converts a time_point to another, rounding down (function template)
round(std::chrono::duration) (C++17)converts a duration to another, rounding to nearest, ties to even (function template)
roundlroundllround (C++11)(C++11)(C++11)nearest integer, rounding away from zero in halfway cases (function)

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