NAME

std::chrono::duration::zero - std::chrono::duration::zero

Synopsis

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.

Parameters

(none)

Return value

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

Example

// Run this code

#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()));
}

See also

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