public static member function
static constexpr Rep zero();
Returns a tick count value of zero.
duration_values is a traits class. By default, it returns Rep(0), where Rep is the first template parameter (the type used by a duration for its internal tick count).
This function is called by duration::zero to create a zero duration object.
A specific type of tick count can specialize this template to provide a different value.
The value of a tick count of zero.
Rep is the first class template parameter, which is an arithmetic type (or a class emulating an arithmetic type).