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Diffstat (limited to '3rdParty/Boost/src/boost/chrono/duration.hpp')
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diff --git a/3rdParty/Boost/src/boost/chrono/duration.hpp b/3rdParty/Boost/src/boost/chrono/duration.hpp new file mode 100644 index 0000000..97fe3d7 --- /dev/null +++ b/3rdParty/Boost/src/boost/chrono/duration.hpp @@ -0,0 +1,795 @@ +// duration.hpp --------------------------------------------------------------// + +// Copyright 2008 Howard Hinnant +// Copyright 2008 Beman Dawes +// Copyright 2009-2011 Vicente J. Botet Escriba + +// Distributed under the Boost Software License, Version 1.0. +// See http://www.boost.org/LICENSE_1_0.txt + +/* + +This code was derived by Beman Dawes from Howard Hinnant's time2_demo prototype. +Many thanks to Howard for making his code available under the Boost license. +The original code was modified to conform to Boost conventions and to section +20.9 Time utilities [time] of the C++ committee's working paper N2798. +See http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2798.pdf. + +time2_demo contained this comment: + + Much thanks to Andrei Alexandrescu, + Walter Brown, + Peter Dimov, + Jeff Garland, + Terry Golubiewski, + Daniel Krugler, + Anthony Williams. +*/ + + +#ifndef BOOST_CHRONO_DURATION_HPP +#define BOOST_CHRONO_DURATION_HPP + +#include <boost/chrono/config.hpp> +#include <boost/chrono/detail/static_assert.hpp> + +#include <climits> +#include <limits> + + +#include <boost/mpl/logical.hpp> +#include <boost/ratio/ratio.hpp> +#include <boost/type_traits/common_type.hpp> +#include <boost/type_traits/is_arithmetic.hpp> +#include <boost/type_traits/is_convertible.hpp> +#include <boost/type_traits/is_floating_point.hpp> +#include <boost/type_traits/is_unsigned.hpp> +#include <boost/chrono/detail/is_evenly_divisible_by.hpp> + +#include <boost/cstdint.hpp> +#include <boost/utility/enable_if.hpp> +#include <boost/detail/workaround.hpp> +#include <boost/integer_traits.hpp> + +#if !defined(BOOST_NO_CXX11_STATIC_ASSERT) || !defined(BOOST_CHRONO_USES_MPL_ASSERT) +#define BOOST_CHRONO_A_DURATION_REPRESENTATION_CAN_NOT_BE_A_DURATION "A duration representation can not be a duration" +#define BOOST_CHRONO_SECOND_TEMPLATE_PARAMETER_OF_DURATION_MUST_BE_A_STD_RATIO "Second template parameter of duration must be a boost::ratio" +#define BOOST_CHRONO_DURATION_PERIOD_MUST_BE_POSITIVE "duration period must be positive" +#define BOOST_CHRONO_SECOND_TEMPLATE_PARAMETER_OF_TIME_POINT_MUST_BE_A_BOOST_CHRONO_DURATION "Second template parameter of time_point must be a boost::chrono::duration" +#endif + +#ifndef BOOST_CHRONO_HEADER_ONLY +// this must occur after all of the includes and before any code appears: +#include <boost/config/abi_prefix.hpp> // must be the last #include +#endif + +//----------------------------------------------------------------------------// +// // +// 20.9 Time utilities [time] // +// synopsis // +// // +//----------------------------------------------------------------------------// + +namespace boost { +namespace chrono { + + template <class Rep, class Period = ratio<1> > + class duration; + + namespace detail + { + template <class T> + struct is_duration + : boost::false_type {}; + + template <class Rep, class Period> + struct is_duration<duration<Rep, Period> > + : boost::true_type {}; + + template <class Duration, class Rep, bool = is_duration<Rep>::value> + struct duration_divide_result + { + }; + + template <class Duration, class Rep2, + bool = ( + ((boost::is_convertible<typename Duration::rep, + typename common_type<typename Duration::rep, Rep2>::type>::value)) + && ((boost::is_convertible<Rep2, + typename common_type<typename Duration::rep, Rep2>::type>::value)) + ) + > + struct duration_divide_imp + { + }; + + template <class Rep1, class Period, class Rep2> + struct duration_divide_imp<duration<Rep1, Period>, Rep2, true> + { + typedef duration<typename common_type<Rep1, Rep2>::type, Period> type; + }; + + template <class Rep1, class Period, class Rep2> + struct duration_divide_result<duration<Rep1, Period>, Rep2, false> + : duration_divide_imp<duration<Rep1, Period>, Rep2> + { + }; + +/// + template <class Rep, class Duration, bool = is_duration<Rep>::value> + struct duration_divide_result2 + { + }; + + template <class Rep, class Duration, + bool = ( + ((boost::is_convertible<typename Duration::rep, + typename common_type<typename Duration::rep, Rep>::type>::value)) + && ((boost::is_convertible<Rep, + typename common_type<typename Duration::rep, Rep>::type>::value)) + ) + > + struct duration_divide_imp2 + { + }; + + template <class Rep1, class Rep2, class Period > + struct duration_divide_imp2<Rep1, duration<Rep2, Period>, true> + { + //typedef typename common_type<Rep1, Rep2>::type type; + typedef double type; + }; + + template <class Rep1, class Rep2, class Period > + struct duration_divide_result2<Rep1, duration<Rep2, Period>, false> + : duration_divide_imp2<Rep1, duration<Rep2, Period> > + { + }; + +/// + template <class Duration, class Rep, bool = is_duration<Rep>::value> + struct duration_modulo_result + { + }; + + template <class Duration, class Rep2, + bool = ( + //boost::is_convertible<typename Duration::rep, + //typename common_type<typename Duration::rep, Rep2>::type>::value + //&& + boost::is_convertible<Rep2, + typename common_type<typename Duration::rep, Rep2>::type>::value + ) + > + struct duration_modulo_imp + { + }; + + template <class Rep1, class Period, class Rep2> + struct duration_modulo_imp<duration<Rep1, Period>, Rep2, true> + { + typedef duration<typename common_type<Rep1, Rep2>::type, Period> type; + }; + + template <class Rep1, class Period, class Rep2> + struct duration_modulo_result<duration<Rep1, Period>, Rep2, false> + : duration_modulo_imp<duration<Rep1, Period>, Rep2> + { + }; + +} // namespace detail +} // namespace chrono + + +// common_type trait specializations + +template <class Rep1, class Period1, class Rep2, class Period2> +struct common_type<chrono::duration<Rep1, Period1>, + chrono::duration<Rep2, Period2> >; + + +namespace chrono { + + // customization traits + template <class Rep> struct treat_as_floating_point; + template <class Rep> struct duration_values; + + // convenience typedefs + typedef duration<boost::int_least64_t, nano> nanoseconds; // at least 64 bits needed + typedef duration<boost::int_least64_t, micro> microseconds; // at least 55 bits needed + typedef duration<boost::int_least64_t, milli> milliseconds; // at least 45 bits needed + typedef duration<boost::int_least64_t> seconds; // at least 35 bits needed + typedef duration<boost::int_least32_t, ratio< 60> > minutes; // at least 29 bits needed + typedef duration<boost::int_least32_t, ratio<3600> > hours; // at least 23 bits needed + +//----------------------------------------------------------------------------// +// duration helpers // +//----------------------------------------------------------------------------// + +namespace detail +{ + + // duration_cast + + // duration_cast is the heart of this whole prototype. It can convert any + // duration to any other. It is also (implicitly) used in converting + // time_points. The conversion is always exact if possible. And it is + // always as efficient as hand written code. If different representations + // are involved, care is taken to never require implicit conversions. + // Instead static_cast is used explicitly for every required conversion. + // If there are a mixture of integral and floating point representations, + // the use of common_type ensures that the most logical "intermediate" + // representation is used. + template <class FromDuration, class ToDuration, + class Period, + bool PeriodNumEq1, + bool PeriodDenEq1> + struct duration_cast_aux; + + // When the two periods are the same, all that is left to do is static_cast from + // the source representation to the target representation (which may be a no-op). + // This conversion is always exact as long as the static_cast from the source + // representation to the destination representation is exact. + template <class FromDuration, class ToDuration, class Period> + struct duration_cast_aux<FromDuration, ToDuration, Period, true, true> + { + BOOST_CONSTEXPR ToDuration operator()(const FromDuration& fd) const + { + return ToDuration(static_cast<typename ToDuration::rep>(fd.count())); + } + }; + + // When the numerator of FromPeriod / ToPeriod is 1, then all we need to do is + // divide by the denominator of FromPeriod / ToPeriod. The common_type of + // the two representations is used for the intermediate computation before + // static_cast'ing to the destination. + // This conversion is generally not exact because of the division (but could be + // if you get lucky on the run time value of fd.count()). + template <class FromDuration, class ToDuration, class Period> + struct duration_cast_aux<FromDuration, ToDuration, Period, true, false> + { + BOOST_CONSTEXPR ToDuration operator()(const FromDuration& fd) const + { + typedef typename common_type< + typename ToDuration::rep, + typename FromDuration::rep, + boost::intmax_t>::type C; + return ToDuration(static_cast<typename ToDuration::rep>( + static_cast<C>(fd.count()) / static_cast<C>(Period::den))); + } + }; + + // When the denominator of FromPeriod / ToPeriod is 1, then all we need to do is + // multiply by the numerator of FromPeriod / ToPeriod. The common_type of + // the two representations is used for the intermediate computation before + // static_cast'ing to the destination. + // This conversion is always exact as long as the static_cast's involved are exact. + template <class FromDuration, class ToDuration, class Period> + struct duration_cast_aux<FromDuration, ToDuration, Period, false, true> + { + BOOST_CONSTEXPR ToDuration operator()(const FromDuration& fd) const + { + typedef typename common_type< + typename ToDuration::rep, + typename FromDuration::rep, + boost::intmax_t>::type C; + return ToDuration(static_cast<typename ToDuration::rep>( + static_cast<C>(fd.count()) * static_cast<C>(Period::num))); + } + }; + + // When neither the numerator or denominator of FromPeriod / ToPeriod is 1, then we need to + // multiply by the numerator and divide by the denominator of FromPeriod / ToPeriod. The + // common_type of the two representations is used for the intermediate computation before + // static_cast'ing to the destination. + // This conversion is generally not exact because of the division (but could be + // if you get lucky on the run time value of fd.count()). + template <class FromDuration, class ToDuration, class Period> + struct duration_cast_aux<FromDuration, ToDuration, Period, false, false> + { + BOOST_CONSTEXPR ToDuration operator()(const FromDuration& fd) const + { + typedef typename common_type< + typename ToDuration::rep, + typename FromDuration::rep, + boost::intmax_t>::type C; + return ToDuration(static_cast<typename ToDuration::rep>( + static_cast<C>(fd.count()) * static_cast<C>(Period::num) + / static_cast<C>(Period::den))); + } + }; + + template <class FromDuration, class ToDuration> + struct duration_cast { + typedef typename ratio_divide<typename FromDuration::period, + typename ToDuration::period>::type Period; + typedef duration_cast_aux< + FromDuration, + ToDuration, + Period, + Period::num == 1, + Period::den == 1 + > Aux; + BOOST_CONSTEXPR ToDuration operator()(const FromDuration& fd) const + { + return Aux()(fd); + } + }; + +} // namespace detail + +//----------------------------------------------------------------------------// +// // +// 20.9.2 Time-related traits [time.traits] // +// // +//----------------------------------------------------------------------------// +//----------------------------------------------------------------------------// +// 20.9.2.1 treat_as_floating_point [time.traits.is_fp] // +// Probably should have been treat_as_floating_point. Editor notifed. // +//----------------------------------------------------------------------------// + + // Support bidirectional (non-exact) conversions for floating point rep types + // (or user defined rep types which specialize treat_as_floating_point). + template <class Rep> + struct treat_as_floating_point : boost::is_floating_point<Rep> {}; + +//----------------------------------------------------------------------------// +// 20.9.2.2 duration_values [time.traits.duration_values] // +//----------------------------------------------------------------------------// + +namespace detail { + template <class T, bool = is_arithmetic<T>::value> + struct chrono_numeric_limits { + static BOOST_CHRONO_LIB_CONSTEXPR T lowest() BOOST_CHRONO_LIB_NOEXCEPT_OR_THROW {return (std::numeric_limits<T>::min) ();} + }; + + template <class T> + struct chrono_numeric_limits<T,true> { + static BOOST_CHRONO_LIB_CONSTEXPR T lowest() BOOST_CHRONO_LIB_NOEXCEPT_OR_THROW {return (std::numeric_limits<T>::min) ();} + }; + + template <> + struct chrono_numeric_limits<float,true> { + static BOOST_CHRONO_LIB_CONSTEXPR float lowest() BOOST_CHRONO_LIB_NOEXCEPT_OR_THROW + { + return -(std::numeric_limits<float>::max) (); + } + }; + + template <> + struct chrono_numeric_limits<double,true> { + static BOOST_CHRONO_LIB_CONSTEXPR double lowest() BOOST_CHRONO_LIB_NOEXCEPT_OR_THROW + { + return -(std::numeric_limits<double>::max) (); + } + }; + + template <> + struct chrono_numeric_limits<long double,true> { + static BOOST_CHRONO_LIB_CONSTEXPR long double lowest() BOOST_CHRONO_LIB_NOEXCEPT_OR_THROW + { + return -(std::numeric_limits<long double>::max)(); + } + }; + + template <class T> + struct numeric_limits : chrono_numeric_limits<typename remove_cv<T>::type> + {}; + +} +template <class Rep> +struct duration_values +{ + static BOOST_CONSTEXPR Rep zero() {return Rep(0);} + static BOOST_CHRONO_LIB_CONSTEXPR Rep max BOOST_PREVENT_MACRO_SUBSTITUTION () + { + return (std::numeric_limits<Rep>::max)(); + } + + static BOOST_CHRONO_LIB_CONSTEXPR Rep min BOOST_PREVENT_MACRO_SUBSTITUTION () + { + return detail::numeric_limits<Rep>::lowest(); + } +}; + +} // namespace chrono + +//----------------------------------------------------------------------------// +// 20.9.2.3 Specializations of common_type [time.traits.specializations] // +//----------------------------------------------------------------------------// + +template <class Rep1, class Period1, class Rep2, class Period2> +struct common_type<chrono::duration<Rep1, Period1>, + chrono::duration<Rep2, Period2> > +{ + typedef chrono::duration<typename common_type<Rep1, Rep2>::type, + typename boost::ratio_gcd<Period1, Period2>::type> type; +}; + + +//----------------------------------------------------------------------------// +// // +// 20.9.3 Class template duration [time.duration] // +// // +//----------------------------------------------------------------------------// + + +namespace chrono { + + template <class Rep, class Period> + class duration + { + //BOOST_CHRONO_STATIC_ASSERT(boost::is_integral<Rep>::value, BOOST_CHRONO_A_DURATION_REPRESENTATION_MUST_BE_INTEGRAL, ()); + BOOST_CHRONO_STATIC_ASSERT(!boost::chrono::detail::is_duration<Rep>::value, + BOOST_CHRONO_A_DURATION_REPRESENTATION_CAN_NOT_BE_A_DURATION, ()); + BOOST_CHRONO_STATIC_ASSERT(boost::ratio_detail::is_ratio<typename Period::type>::value, + BOOST_CHRONO_SECOND_TEMPLATE_PARAMETER_OF_DURATION_MUST_BE_A_STD_RATIO, ()); + BOOST_CHRONO_STATIC_ASSERT(Period::num>0, + BOOST_CHRONO_DURATION_PERIOD_MUST_BE_POSITIVE, ()); + public: + typedef Rep rep; + typedef Period period; + private: + rep rep_; + public: + + BOOST_CONSTEXPR + duration() : rep_(duration_values<rep>::zero()) { } + template <class Rep2> + BOOST_CONSTEXPR + explicit duration(const Rep2& r + , typename boost::enable_if < + mpl::and_ < + boost::is_convertible<Rep2, rep>, + mpl::or_ < + treat_as_floating_point<rep>, + mpl::and_ < + mpl::not_ < treat_as_floating_point<rep> >, + mpl::not_ < treat_as_floating_point<Rep2> > + > + > + > + >::type* = 0 + ) : rep_(r) { } + //~duration() {} //= default; + //BOOST_CONSTEXPR + //duration(const duration& rhs) : rep_(rhs.rep_) {} // = default; + duration& operator=(const duration& rhs) // = default; + { + if (&rhs != this) rep_= rhs.rep_; + return *this; + } + + // conversions + template <class Rep2, class Period2> + BOOST_CONSTEXPR + duration(const duration<Rep2, Period2>& d + , typename boost::enable_if < + mpl::or_ < + treat_as_floating_point<rep>, + mpl::and_ < + chrono_detail::is_evenly_divisible_by<Period2, period>, + mpl::not_ < treat_as_floating_point<Rep2> > + > + > + >::type* = 0 + ) + : rep_(chrono::detail::duration_cast<duration<Rep2, Period2>, duration>()(d).count()) {} + + // observer + + BOOST_CONSTEXPR + rep count() const {return rep_;} + + // arithmetic + + BOOST_CONSTEXPR + duration operator+() const {return duration(rep_);;} + BOOST_CONSTEXPR + duration operator-() const {return duration(-rep_);} + duration& operator++() {++rep_; return *this;} + duration operator++(int) {return duration(rep_++);} + duration& operator--() {--rep_; return *this;} + duration operator--(int) {return duration(rep_--);} + + duration& operator+=(const duration& d) + { + rep_ += d.count(); return *this; + } + duration& operator-=(const duration& d) + { + rep_ -= d.count(); return *this; + } + + duration& operator*=(const rep& rhs) {rep_ *= rhs; return *this;} + duration& operator/=(const rep& rhs) {rep_ /= rhs; return *this;} + duration& operator%=(const rep& rhs) {rep_ %= rhs; return *this;} + duration& operator%=(const duration& rhs) + { + rep_ %= rhs.count(); return *this; + } + // 20.9.3.4 duration special values [time.duration.special] + + static BOOST_CONSTEXPR duration zero() + { + return duration(duration_values<rep>::zero()); + } + static BOOST_CHRONO_LIB_CONSTEXPR duration min BOOST_PREVENT_MACRO_SUBSTITUTION () + { + return duration((duration_values<rep>::min)()); + } + static BOOST_CHRONO_LIB_CONSTEXPR duration max BOOST_PREVENT_MACRO_SUBSTITUTION () + { + return duration((duration_values<rep>::max)()); + } + }; + +//----------------------------------------------------------------------------// +// 20.9.3.5 duration non-member arithmetic [time.duration.nonmember] // +//----------------------------------------------------------------------------// + + // Duration + + + template <class Rep1, class Period1, class Rep2, class Period2> + inline BOOST_CONSTEXPR + typename common_type<duration<Rep1, Period1>, duration<Rep2, Period2> >::type + operator+(const duration<Rep1, Period1>& lhs, + const duration<Rep2, Period2>& rhs) + { + typedef typename common_type<duration<Rep1, Period1>, + duration<Rep2, Period2> >::type CD; + return CD(CD(lhs).count()+CD(rhs).count()); + } + + // Duration - + + template <class Rep1, class Period1, class Rep2, class Period2> + inline BOOST_CONSTEXPR + typename common_type<duration<Rep1, Period1>, duration<Rep2, Period2> >::type + operator-(const duration<Rep1, Period1>& lhs, + const duration<Rep2, Period2>& rhs) + { + typedef typename common_type<duration<Rep1, Period1>, + duration<Rep2, Period2> >::type CD; + return CD(CD(lhs).count()-CD(rhs).count()); + } + + // Duration * + + template <class Rep1, class Period, class Rep2> + inline BOOST_CONSTEXPR + typename boost::enable_if < + mpl::and_ < + boost::is_convertible<Rep1, typename common_type<Rep1, Rep2>::type>, + boost::is_convertible<Rep2, typename common_type<Rep1, Rep2>::type> + >, + duration<typename common_type<Rep1, Rep2>::type, Period> + >::type + operator*(const duration<Rep1, Period>& d, const Rep2& s) + { + typedef typename common_type<Rep1, Rep2>::type CR; + typedef duration<CR, Period> CD; + return CD(CD(d).count()*static_cast<CR>(s)); + } + + template <class Rep1, class Period, class Rep2> + inline BOOST_CONSTEXPR + typename boost::enable_if < + mpl::and_ < + boost::is_convertible<Rep1, typename common_type<Rep1, Rep2>::type>, + boost::is_convertible<Rep2, typename common_type<Rep1, Rep2>::type> + >, + duration<typename common_type<Rep1, Rep2>::type, Period> + >::type + operator*(const Rep1& s, const duration<Rep2, Period>& d) + { + return d * s; + } + + // Duration / + + template <class Rep1, class Period, class Rep2> + inline BOOST_CONSTEXPR + typename boost::disable_if <boost::chrono::detail::is_duration<Rep2>, + typename boost::chrono::detail::duration_divide_result< + duration<Rep1, Period>, Rep2>::type + >::type + operator/(const duration<Rep1, Period>& d, const Rep2& s) + { + typedef typename common_type<Rep1, Rep2>::type CR; + typedef duration<CR, Period> CD; + + return CD(CD(d).count()/static_cast<CR>(s)); + } + + template <class Rep1, class Period1, class Rep2, class Period2> + inline BOOST_CONSTEXPR + typename common_type<Rep1, Rep2>::type + operator/(const duration<Rep1, Period1>& lhs, const duration<Rep2, Period2>& rhs) + { + typedef typename common_type<duration<Rep1, Period1>, + duration<Rep2, Period2> >::type CD; + return CD(lhs).count() / CD(rhs).count(); + } + + #ifdef BOOST_CHRONO_EXTENSIONS + template <class Rep1, class Rep2, class Period> + inline BOOST_CONSTEXPR + typename boost::disable_if <boost::chrono::detail::is_duration<Rep1>, + typename boost::chrono::detail::duration_divide_result2< + Rep1, duration<Rep2, Period> >::type + >::type + operator/(const Rep1& s, const duration<Rep2, Period>& d) + { + typedef typename common_type<Rep1, Rep2>::type CR; + typedef duration<CR, Period> CD; + + return static_cast<CR>(s)/CD(d).count(); + } + #endif + // Duration % + + template <class Rep1, class Period, class Rep2> + inline BOOST_CONSTEXPR + typename boost::disable_if <boost::chrono::detail::is_duration<Rep2>, + typename boost::chrono::detail::duration_modulo_result< + duration<Rep1, Period>, Rep2>::type + >::type + operator%(const duration<Rep1, Period>& d, const Rep2& s) + { + typedef typename common_type<Rep1, Rep2>::type CR; + typedef duration<CR, Period> CD; + + return CD(CD(d).count()%static_cast<CR>(s)); + } + + template <class Rep1, class Period1, class Rep2, class Period2> + inline BOOST_CONSTEXPR + typename common_type<duration<Rep1, Period1>, duration<Rep2, Period2> >::type + operator%(const duration<Rep1, Period1>& lhs, + const duration<Rep2, Period2>& rhs) { + typedef typename common_type<duration<Rep1, Period1>, + duration<Rep2, Period2> >::type CD; + + return CD(CD(lhs).count()%CD(rhs).count()); + } + + +//----------------------------------------------------------------------------// +// 20.9.3.6 duration comparisons [time.duration.comparisons] // +//----------------------------------------------------------------------------// + +namespace detail +{ + template <class LhsDuration, class RhsDuration> + struct duration_eq + { + BOOST_CONSTEXPR bool operator()(const LhsDuration& lhs, const RhsDuration& rhs) + { + typedef typename common_type<LhsDuration, RhsDuration>::type CD; + return CD(lhs).count() == CD(rhs).count(); + } + }; + + template <class LhsDuration> + struct duration_eq<LhsDuration, LhsDuration> + { + BOOST_CONSTEXPR bool operator()(const LhsDuration& lhs, const LhsDuration& rhs) + { + return lhs.count() == rhs.count(); + } + }; + + template <class LhsDuration, class RhsDuration> + struct duration_lt + { + BOOST_CONSTEXPR bool operator()(const LhsDuration& lhs, const RhsDuration& rhs) + { + typedef typename common_type<LhsDuration, RhsDuration>::type CD; + return CD(lhs).count() < CD(rhs).count(); + } + }; + + template <class LhsDuration> + struct duration_lt<LhsDuration, LhsDuration> + { + BOOST_CONSTEXPR bool operator()(const LhsDuration& lhs, const LhsDuration& rhs) + { + return lhs.count() < rhs.count(); + } + }; + +} // namespace detail + + // Duration == + + template <class Rep1, class Period1, class Rep2, class Period2> + inline BOOST_CONSTEXPR + bool + operator==(const duration<Rep1, Period1>& lhs, + const duration<Rep2, Period2>& rhs) + { + return boost::chrono::detail::duration_eq< + duration<Rep1, Period1>, duration<Rep2, Period2> >()(lhs, rhs); + } + + // Duration != + + template <class Rep1, class Period1, class Rep2, class Period2> + inline BOOST_CONSTEXPR + bool + operator!=(const duration<Rep1, Period1>& lhs, + const duration<Rep2, Period2>& rhs) + { + return !(lhs == rhs); + } + + // Duration < + + template <class Rep1, class Period1, class Rep2, class Period2> + inline BOOST_CONSTEXPR + bool + operator< (const duration<Rep1, Period1>& lhs, + const duration<Rep2, Period2>& rhs) + { + return boost::chrono::detail::duration_lt< + duration<Rep1, Period1>, duration<Rep2, Period2> >()(lhs, rhs); + } + + // Duration > + + template <class Rep1, class Period1, class Rep2, class Period2> + inline BOOST_CONSTEXPR + bool + operator> (const duration<Rep1, Period1>& lhs, + const duration<Rep2, Period2>& rhs) + { + return rhs < lhs; + } + + // Duration <= + + template <class Rep1, class Period1, class Rep2, class Period2> + inline BOOST_CONSTEXPR + bool + operator<=(const duration<Rep1, Period1>& lhs, + const duration<Rep2, Period2>& rhs) + { + return !(rhs < lhs); + } + + // Duration >= + + template <class Rep1, class Period1, class Rep2, class Period2> + inline BOOST_CONSTEXPR + bool + operator>=(const duration<Rep1, Period1>& lhs, + const duration<Rep2, Period2>& rhs) + { + return !(lhs < rhs); + } + +//----------------------------------------------------------------------------// +// 20.9.3.7 duration_cast [time.duration.cast] // +//----------------------------------------------------------------------------// + + // Compile-time select the most efficient algorithm for the conversion... + template <class ToDuration, class Rep, class Period> + inline BOOST_CONSTEXPR + typename boost::enable_if < + boost::chrono::detail::is_duration<ToDuration>, ToDuration>::type + duration_cast(const duration<Rep, Period>& fd) + { + return boost::chrono::detail::duration_cast< + duration<Rep, Period>, ToDuration>()(fd); + } + +} // namespace chrono +} // namespace boost + +#ifndef BOOST_CHRONO_HEADER_ONLY +// the suffix header occurs after all of our code: +#include <boost/config/abi_suffix.hpp> // pops abi_prefix.hpp pragmas +#endif + +#endif // BOOST_CHRONO_DURATION_HPP |