std::chrono::ceil(std::chrono::duration) (3) - Linux Manuals

std::chrono::ceil(std::chrono::duration): std::chrono::ceil(std::chrono::duration)

NAME

std::chrono::ceil(std::chrono::duration) - std::chrono::ceil(std::chrono::duration)

Synopsis


Defined in header <chrono>
template <class ToDuration, class Rep, class Period> (since C++17)
constexpr ToDuration ceil(const duration<Rep, Period>& d);


Returns the smallest duration t representable in ToDuration that is greater or equal to d.
The function does not participate in the overload resolution unless ToDuration is an instance of std::chrono::duration.

Parameters


d - duration to convert

Return value


d rounded up to a duration of type ToDuration.

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 Rep, class Period,
            class = enable_if_t<is_duration<To>{}>>
  constexpr To ceil(const std::chrono::duration<Rep, Period>& d)
  {
      To t = std::chrono::duration_cast<To>(d);
      if (t < d)
          return t + To{1};
      return t;
  }

Example


 This section is incomplete
 Reason: no example

See also


                              converts a duration to another, with a different tick interval
duration_cast (function template)


floor(std::chrono::duration) converts a duration to another, rounding down
                              (function template)
(C++17)


round(std::chrono::duration) converts a duration to another, rounding to nearest, ties to even
                              (function template)
(C++17)


ceil(std::chrono::time_point) converts a time_point to another, rounding up
                              (function template)
(C++17)


ceil
ceilf
ceill nearest integer not less than the given value
                              (function)


(C++11)
(C++11)

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