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<td class="t-dcl-nopad"> </td> <td > (since C++11) </td> </tr> Template:ddcl list end
std::chrono::system_clock represents the system-wide real time wall clock.
It may not be monotonic: on most systems, the system time can be adjusted at any moment. It is the only C++ clock that has the ability to map its time points to C-style time, and, therefore, to be displayed.
std::chrono::system_clock meets the requirements of
||signed arithmetic type representing the number of ticks in the clock's duration|
||an std::ratio type representing the tick period of the clock, in seconds|
||std::chrono::duration<rep, period>, capable of representing negative durations|
| true if the time between ticks is always constant, i.e. calls to now() return values that increase monotonically even in case of some external clock adjustment |
(public static member constant)
| monotonic clock that will never be adjusted |
| the clock with the shortest tick period available |