78   template <class Rep, class Period = ratio<1> >
87     template <class Rep, class Period>
88       struct is_duration<duration<Rep, Period> >
111     template <class Rep1, class Period, class Rep2>
112     struct duration_divide_imp<duration<Rep1, Period>, Rep2, true>
114         typedef duration<typename boost::common_type<Rep1, Rep2>::type, Period> type;
117     template <class Rep1, class Period, class Rep2>
118     struct duration_divide_result<duration<Rep1, Period>, Rep2, false>
119         : duration_divide_imp<duration<Rep1, Period>, Rep2>
141     template <class Rep1, class Rep2, class Period >
142     struct duration_divide_imp2<Rep1, duration<Rep2, Period>, true>
148     template <class Rep1, class Rep2, class Period >
149     struct duration_divide_result2<Rep1, duration<Rep2, Period>, false>
150         : duration_divide_imp2<Rep1, duration<Rep2, Period> >
173     template <class Rep1, class Period, class Rep2>
174     struct duration_modulo_imp<duration<Rep1, Period>, Rep2, true>
176         typedef duration<typename boost::common_type<Rep1, Rep2>::type, Period> type;
179     template <class Rep1, class Period, class Rep2>
180     struct duration_modulo_result<duration<Rep1, Period>, Rep2, false>
181         : duration_modulo_imp<duration<Rep1, Period>, Rep2>
285               class Period = typename boost::ratio_divide<typename FromDuration::period,
287               bool = Period::num == 1,
288               bool = Period::den == 1>
295     template <class FromDuration, class ToDuration, class Period>
296     struct duration_cast<FromDuration, ToDuration, Period, true, true>
310     template <class FromDuration, class ToDuration, class Period>
311     struct duration_cast<FromDuration, ToDuration, Period, true, false>
320                               static_cast<C>(fd.count()) / static_cast<C>(Period::den)));  in operator ()()
329     template <class FromDuration, class ToDuration, class Period>
330     struct duration_cast<FromDuration, ToDuration, Period, false, true>
339                               static_cast<C>(fd.count()) * static_cast<C>(Period::num)));  in operator ()()
349     template <class FromDuration, class ToDuration, class Period>
350     struct duration_cast<FromDuration, ToDuration, Period, false, false>
359                static_cast<C>(fd.count()) * static_cast<C>(Period::num)  in operator ()()
360                  / static_cast<C>(Period::den)));  in operator ()()
449     template <class Rep, class Period>
453 …BOOST_EX_CHRONO_STATIC_ASSERT(boost::ratio_detail::is_ratio<Period>::value, BOOST_EX_CHRONO_SECOND…
454 …BOOST_EX_CHRONO_STATIC_ASSERT(Period::num>0, BOOST_EX_CHRONO_DURATION_PERIOD_MUST_BE_POSITIVE, ());
457         typedef Period period;
577   template <class Rep1, class Period, class Rep2>
580     duration<typename boost::common_type<Rep1, Rep2>::type, Period>
587     duration<typename boost::common_type<Rep1, Rep2>::type, Period>
590   operator*(const duration<Rep1, Period>& d, const Rep2& s)  in operator *()
593       duration<CR, Period> r = d;  in operator *()
598   template <class Rep1, class Period, class Rep2>
601     duration<typename boost::common_type<Rep1, Rep2>::type, Period>
608     duration<typename boost::common_type<Rep1, Rep2>::type, Period>
611   operator*(const Rep1& s, const duration<Rep2, Period>& d)  in operator *()
618   template <class Rep1, class Period, class Rep2>
621     typename boost_ex::chrono::detail::duration_divide_result<duration<Rep1, Period>, Rep2>::type
623   operator/(const duration<Rep1, Period>& d, const Rep2& s)  in operator /()
626       duration<CR, Period> r = d;  in operator /()
641   template <class Rep1, class Rep2, class Period>
644     typename boost_ex::chrono::detail::duration_divide_result2<Rep1, duration<Rep2, Period> >::type
646   operator/(const Rep1& s, const duration<Rep2, Period>& d)  in operator /()
649       duration<CR, Period> r = d;  in operator /()
656   template <class Rep1, class Period, class Rep2>
658     typename boost_ex::chrono::detail::duration_modulo_result<duration<Rep1, Period>, Rep2>::type
660   operator%(const duration<Rep1, Period>& d, const Rep2& s) {  in operator %()
662     duration<CR, Period> r = d;  in operator %()
785   template <class ToDuration, class Rep, class Period>
792   duration_cast(const duration<Rep, Period>& fd)  in duration_cast()
794       return boost_ex::chrono::detail::duration_cast<duration<Rep, Period>, ToDuration>()(fd);  in duration_cast()