std::chrono::duration<Rep,Period>::zero
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
#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
|
[static]
|
returns the special duration value min (public static member function) |
|
[static]
|
returns the special duration value max (public static member function) |
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https://en.cppreference.com/w/cpp/chrono/duration/zero
