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std::chrono::day::operatorunsigned – std::chrono::day::operatorunsigned Synopsis explicit constexpr operator unsigned() const noexcept; (since C++20) Returns the day value stored in *this. Return value The day value stored in *this.
std::chrono::day::operator+=,std::chrono::day::operator-= – std::chrono::day::operator+=,std::chrono::day::operator-= Synopsis constexpr std::chrono::day &operator+=(const std::chrono::days &d) noexcept; (1)(since C++ 20) constexpr std::chrono::day & operator-=(const std::chrono::days &d) noexcept; (2) (since C++20) Adds or subtracts d.count() days from the day value. 1) Equivalent to *this = *this + d; 2) Equivalent to *this = *this – d; Return value A reference to this day…
std::chrono::day::operator++,std::chrono::day::operator– – std::chrono::day::operator++,std::chrono::day::operator– Synopsis constexpr std::chrono::day& operator++() noexcept; (1) (since C++20) constexpr std::chrono::day operator++(int) noexcept; (2) (since C++20) constexpr std::chrono::day& operator–() noexcept; (3) (since C++20) constexpr std::chrono::day operator–(int) noexcept; (4) (since C++20) Adds or subtracts 1 from the day value. 1-2) Performs *this += std::chrono::days{1}; 3-4) Performs *this -= std::chrono::days{1}; Parameters (none) Return value 1,3)…
std::chrono::day::ok – std::chrono::day::ok Synopsis constexpr bool ok() const noexcept; (since C++20) Checks if the day value stored in *this is in the valid range, i.e., [1, 31]. Return value true if the day value stored in *this is in the range [1, 31]. Otherwise false.
std::chrono::day::day – std::chrono::day::day Synopsis day() = default; (1) (since C++20) explicit constexpr day(unsigned d) noexcept; (2) (since C++20) Constructs a day object. 1) Default constructor leaves the day value uninitialized. 2) If d <= 255, constructs a day object holding the day value d. Otherwise the value held is unspecified.
std::chrono::day – std::chrono::day Synopsis Defined in header <chrono> class day; (since C++20) The class day represents a day in a month. Its normal range is [1, 31], but it may hold any number in [0, 255]. day is a TriviallyCopyable StandardLayoutType. Member functions constructs a day constructor (public member function) operator++ increments or decrements the…
std::chrono::current_zone – std::chrono::current_zone Synopsis Defined in header <chrono> const std::chrono::time_zone* current_zone(); (since C++20) Convenience function for obtaining local time zone from the time zone database. Equivalent to std::chrono::get_tzdb().current_zone(). Exceptions std::runtime_error if this is the first reference to the time zone database and the time zone database cannot be initialized. Notes A call to this function…
std::chrono::clock_time_conversion – std::chrono::clock_time_conversion Synopsis Defined in header <chrono> template<class Dest, class Source> struct clock_time_conversion { }; (since C++20) std::chrono::clock_time_conversion is a trait that specifies how to convert a std::chrono::time_point of the Source clock to that of the Dest clock. It does so by providing an const-callable operator() that accepts an argument of type std::chrono::time_point<Source, Duration>…
std::chrono::clock_cast – std::chrono::clock_cast Synopsis Defined in header<chrono> template <class Dest, class Source, class Duration> (since C++ 20) auto clock_cast(const std::chrono::time_point<Source, Duration> &t); Converts the time point t of a clock Source to an equivalent time point of the clock Dest, using std::chrono::system_clock and/or std::chrono::utc_clock as intermediaries if necessary. * If the expression std::chrono::clock_time_conversion<Dest, Source>{}(t) is…
std::chrono::choose – std::chrono::choose Synopsis Defined in header <chrono> enum class choose { earliest, (since C++20) latest }; The scoped enumeration choose can be passed to certain member functions of std::chrono::time_zone and std::chrono::zoned_time to control how ambiguous or nonexistent local times should be resolved. Passing choose::earliest causes the earlier time point to be returned, while passing…
std::chrono::ceil(std::chrono::time_point) – std::chrono::ceil(std::chrono::time_point) Synopsis Defined in header<chrono> template <class ToDuration, class Clock, class Duration> (since C++ 17) constexpr time_point<Clock, ToDuration> ceil(const time_point<Clock, Duration> &tp); Returns the smallest time point t representable in ToDuration that is greater or equal to tp. The function does not participate in the overload resolution unless ToDuration is an instance of…
std::chrono::ceil(std::chrono::duration) – std::chrono::ceil(std::chrono::duration) Synopsis Defined in header<chrono> template <class ToDuration, class Rep, class Period> (since C++ 17) constexpr ToDuration ceil(const duration<Rep, Period> &d); Returns the smallest duration t representable in ToDuration that is greater or equal to d. The function does not participate in the overload resolution unless ToDuration is an instance of std::chrono::duration. Parameters…
std::chrono::ambiguous_local_time – std::chrono::ambiguous_local_time Synopsis Defined in header <chrono> class ambiguous_local_time; (since C++20) Defines a type of object to be thrown as exception to report that an attempt was made to convert a ambiguous std::chrono::local_time to a std::chrono::sys_time without specifying a std::chrono::choose (such as choose::earliest or choose::latest). This exception is thrown by std::chrono::time_zone::to_sys and functions that…
std::chrono::abs(std::chrono::duration) – std::chrono::abs(std::chrono::duration) Synopsis Defined in header <chrono> template <class Rep, class Period> (since C++17) constexpr duration<Rep, Period> abs(duration<Rep, Period> d) Returns the absolute value of the duration d. Specifically, if d >= d.zero(), return d, otherwise return -d. The function does not participate in the overload resolution unless std::numeric_limits<Rep>::is_signed is true. Parameters d –…
std::chrono::_V2::system_clock – Synopsis Public Types typedef chrono::nanoseconds duration typedef duration::period period typedef duration::rep rep typedef chrono::time_point < system_clock, duration > time_point" Public Member Functions < system_clock::duration::zero(),’aclock’sminimumdurationcannotbelessthanitsepoch’);staticconstexprboolis_steady=false;statictime_pointnow() noexcept;staticstd::time_tto_time_t(consttime_point &__t) noexcept{returnstd::time_t(duration_cast < chrono::seconds > __t time_since_epoch ()).count())" Static Public Member Functions static time_point from_time_t (std::time_t __t) noexcept Detailed Description System clock. Time returned represents wall time from…
std::chrono::_V2::steady_clock – Synopsis Public Types typedef chrono::nanoseconds duration typedef duration::period period typedef duration::rep rep typedef chrono::time_point < steady_clock, duration > time_point" Static Public Member Functions static time_point now () noexcept Static Public Attributes static constexpr bool is_steady Detailed Description Monotonic clock. Time returned has the property of only increasing at a uniform rate. Definition at…
std::chrono – Synopsis Classes struct duration struct duration_values struct time_point struct treat_as_floating_point Typedefs typedef duration< int, ratio< 3600 > > hours typedef duration< int64_t, micro > microseconds typedef duration< int64_t, milli > milliseconds typedef duration< int, ratio< 60 > > minutes typedef duration< int64_t, nano > nanoseconds typedef duration< int64_t > seconds Functions template<typename _ToDur…
std::chi_squared_distribution< _RealType >::param_type – Synopsis Public Types typedef chi_squared_distribution < _RealType > distribution_type" Public Attributes __pad0__ : _M_n(__n) { } _RealType n() const { return _M_n Friends bool operator==(const param_type &__p1, const param_type &__p2) Detailed Description template<typename _RealType = double>struct std::chi_squared_distribution< _RealType >::param_type Parameter type. Definition at line 2728 of file random.h. Author Generated automatically…
std::chi_squared_distribution<RealType>::reset – std::chi_squared_distribution<RealType>::reset Synopsis void reset(); (since C++ 11) Resets the internal state of the distribution object. After a call to this function, the next call to operator() on the distribution object will not be dependent on previous calls to operator(). Parameters (none) Return value (none) Complexity Constant.
std::chi_squared_distribution<RealType>::param – std::chi_squared_distribution<RealType>::param Synopsis param_type param() const; (1) (since C++11) void param( const param_type& params ); (2) (since C++11) Manages the associated distribution parameter set. 1) Returns the associated parameter set. 2) Sets the associated parameter set to params Parameters params – new contents of the associated parameter set Return value 1) The associated parameter…