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

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std::chrono::duration

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duration::duration
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duration::operator++duration::operator--
duration::operator+=duration::operator-=duration::operator*=duration::operator/=duration::operator%=

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staticconstexpr duration zero();		(until C++20)
staticconstexpr duration zero()noexcept;		(since C++20)

Returns a zero-length duration.

If the representationrep 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.

[edit]Parameters

(none)

[edit]Return value

Returnsduration(std::chrono::duration_values<rep>::zero()).

[edit]Example

Run this code

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

[edit]See also

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

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

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