duration_cast_impl()

template<typename Rep, typename Period = fl::ratio<1>>

template<typename ToRep, typename ToPeriod, typename FromRep, typename FromPeriod>

static constexpr ToRep fl::chrono::duration< Rep, Period >::duration_cast_impl ( FromRep count )

inlinestaticconstexprprivate

Internal duration_cast implementation.

Definition at line 64 of file chrono.h.

                                                                         {
        // Convert from source period to destination period
        // target_count = source_count * (FromPeriod / ToPeriod)
        // Using: target = source * FromPeriod::num * ToPeriod::den / (FromPeriod::den * ToPeriod::num)
        using ratio = fl::ratio_divide<FromPeriod, ToPeriod>;
        return static_cast<ToRep>(
            static_cast<FromRep>(count) * static_cast<FromRep>(ratio::num) / static_cast<FromRep>(ratio::den)
        );
    }