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std::chrono::duration<Rep,Period>::zero

From cppreference.com
< cpp‎ | chrono‎ | duration
 
 
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static constexpr duration zero();
(until C++20)
static constexpr duration zero() noexcept;
(since C++20)

Returns a zero-length duration.

If the representation rep of the duration requires some other implementation to return a zero-length duration, std::chrono::duration_values can be specialized to return the desired value.

Contents

[edit] Parameters

(none)

[edit] Return value

returns duration(std::chrono::duration_values<rep>::zero())

[edit] Example

#include <chrono>
#include <ratio>
int main() {
    static_assert((std::chrono::hours::zero() == std::chrono::nanoseconds::zero()) &&
                  (std::chrono::duration<short, std::nano>::zero() ==
                   std::chrono::duration<int, std::deci>::zero()) &&
                  (std::chrono::duration<short, std::deca>::zero() ==
                   std::chrono::duration<long, std::exa>::zero()) &&
                  (std::chrono::duration<long, std::atto>::zero().count() ==
                   std::chrono::duration<float, std::exa>::zero().count()));
}

[edit] See also

[static]
returns the special duration value min
(public static member function) [edit]
[static]
returns the special duration value max
(public static member function) [edit]