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std::complex<T>::complex – std::complex<T>::complex Synopsis primary template complex<T> complex(const T &re = T(), const T &im = T()); (1)(until C++ 14) constexpr complex(const T &re = T(), const T &im = T()); (1)(since C++ 14) complex(const complex &other); (2)(until C++ 14) constexpr complex(const complex &other); (2)(since C++ 14) template <class X> (3)(until C++ 14) complex(const complex<X>…
std::complex – std::complex Synopsis Defined in header <complex> template< class T > (1) class complex; template<> class complex<float>; (2) template<> class complex<double>; (3) template<> class complex<long double>; (4) The specializations std::complex<float>, std::complex<double>, and std::complex<long double> are LiteralTypes for representing and manipulating complex_numbers. The effect of instantiating the template complex for any other type is unspecified….
std::compare_3way – std::compare_3way Synopsis Defined in header<algorithm> template <class T, class U> (since C++ 20) constexpr auto compare_3way(const T &a, const U &b); Compares two values using three-way comparison and produces a result of the strongest applicable comparison category type. In detail: * If the expression a <=> b is well-formed, returns its result *…
std::comp_ellint_3,std::comp_ellint_3f,std::comp_ellint_3l – std::comp_ellint_3,std::comp_ellint_3f,std::comp_ellint_3l Synopsis double comp_ellint_3( double k, double ν ); float comp_ellint_3f( float k, float ν ); (1) (since C++17) long double comp_ellint_3l( long double k, long double ν ); Promoted comp_ellint_3( Arithmetic k, Arithmetic ν ); (2) (since C++17) 1) Computes the complete_elliptic_integral_of_the_third_kind of the arguments k and ν. 2) A set of…
std::comp_ellint_2,std::comp_ellint_2f,std::comp_ellint_2l – std::comp_ellint_2,std::comp_ellint_2f,std::comp_ellint_2l Synopsis double comp_ellint_2( double k); float comp_ellint_2( float k ); long double comp_ellint_2( long double k ); (1) (since C++17) float comp_ellint_2f( float k ); long double comp_ellint_2l( long double k ); double comp_ellint_2( IntegralType k ); (2) (since C++17) 1) Computes the complete_elliptic_integral_of_the_second_kind of k. 2) A set of overloads or…
std::comp_ellint_1,std::comp_ellint_1f,std::comp_ellint_1l – std::comp_ellint_1,std::comp_ellint_1f,std::comp_ellint_1l Synopsis double comp_ellint_1( double k ); float comp_ellint_1( float k ); long double comp_ellint_1( long double k ); (1) (since C++17) float comp_ellint_1f( float k ); long double comp_ellint_1l( long double k ); double comp_ellint_1( IntegralType k ); (2) (since C++17) 1) Computes the complete_elliptic_integral_of_the_first_kind of k. 2) A set of overloads…
std::common_type – std::common_type Synopsis Defined in header<type_traits> template <class… T> (since C++ 11) struct common_type; Determines the common type among all types T…, that is the type all T… can be implicitly converted to. If such a type exists (as determined according to the rules below), the member type names that type. Otherwise, there is…
std::common_type(std::chrono::time_point) – std::common_type(std::chrono::time_point) Synopsis template <class Clock, class Duration1, class Duration2> struct common_type<std::chrono::time_point<Clock, Duration1>, std::chrono::time_point<Clock, Duration2>> { (since C++ 11) typedef std::chrono::time_point< Clock, typename std::common_type<Duration1, Duration2>::type> type; }; Exposes the type named type, which is the common type of two std::chrono::time_points. Notes The common type of two std::chrono::time_point types is a std::chrono::time_point with the same…
std::common_type(std::chrono::duration) – std::common_type(std::chrono::duration) Synopsis template <class Rep1, class Period1, class Rep2, class Period2> struct common_type<std::chrono::duration<Rep1, Period1>, std::chrono::duration<Rep2, Period2>> { (since C++ 11) typedef std::chrono::duration< typename std::common_type<Rep1, Rep2>::type, /*see note*/> type; }; Exposes the type named type, which is the common type of two std::chrono::durations. Note The period of the resulting duration is the greatest common…
std::common_reference – std::common_reference Synopsis Defined in header<type_traits> template <class… T> (since C++ 20) struct common_reference; Determines the common reference type of the types T…, that is, the type to which all the types in T… can be converted or bound. If such a type exists (as determined according to the rules below), the member type…
std::common_comparison_category – std::common_comparison_category Synopsis Defined in header<compare> template <class… Ts> struct common_comparison_category { (since C++ 20) using type = /*see below*/; }; The class template std::common_comparison_category provides an alias (as the member typedef type) for the strongest comparison category to which all of the template arguments Ts… can be converted. In detail, the common comparison…
std::collate_byname – std::collate_byname Synopsis Defined in header <locale> template< class CharT > class collate_byname : public std::collate<CharT>; std::collate_byname is a std::collate facet which encapsulates locale-specific collation (comparison) and hashing of strings. Just like std::collate, it can be imbued in std::regex and applied, by means of std::locale::operator(), directly to all standard algorithms that expect a string…
std::collate<CharT>::transform,do_transform – std::collate<CharT>::transform,do_transform Synopsis Defined in header<locale> public : (1) string_type transform(const CharT *low, const CharT *high) const; protected: (2) virtual string_type do_transform(const CharT *low, const CharT *high) const; 1) Public member function, calls the protected virtual member function do_transform of the most derived class. 2) Converts the character sequence [low, high) to a string…
std::collate<CharT>::hash,std::collate<CharT>::do_hash – std::collate<CharT>::hash,std::collate<CharT>::do_hash Synopsis Defined in header<locale> public : (1) long hash(const CharT *beg, const CharT *end) const; protected: (2) virtual long do_hash(const CharT *beg, const CharT *end) const; 1) Public member function, calls the protected virtual member function do_hash of the most derived class. 2) Converts the character sequence [beg, end) to an integer…
std::collate<CharT>::compare,std::collate<CharT>::do_compare – std::collate<CharT>::compare,std::collate<CharT>::do_compare Synopsis Defined in header<locale> public : int compare(const CharT *low1, const CharT *high1, (1) const CharT *low2, const CharT *high2) const; protected: virtual int do_compare(const CharT *low1, const CharT *high1, (2) const CharT *low2, const CharT *high2) const; 1) Public member function, calls the protected virtual member function do_compare of the most…
std::collate<CharT>::~collate – std::collate<CharT>::~collate Synopsis Defined in header <locale> protected: ~collate(); Destructs a std::collate facet. This destructor is protected and virtual (due to base_class destructor being virtual). An object of type std::collate, like most facets, can only be destroyed when the last std::locale object that implements this facet goes out of scope or if a user-defined…
std::collate – std::collate Synopsis Defined in header <locale> template< class CharT > class collate; Class std::collate encapsulates locale-specific collation (comparison) and hashing of strings. This facet is used by std::basic_regex and can be applied, by means of std::locale::operator(), directly to all standard algorithms that expect a string comparison predicate. std-collate-inheritance.svg Inheritance diagram Two standalone (locale-independent)…
std::codecvt_utf8_utf16 – std::codecvt_utf8_utf16 Synopsis Defined in header<codecvt> template <class Elem, unsigned long Maxcode = 0x10ffff, (since C++ 11) std::codecvt_mode Mode = (std::codecvt_mode)0> (deprecated in C++ 17) class codecvt_utf8_utf16 : public std::codecvt<Elem, char, std::mbstate_t>; std::codecvt_utf8_utf16 is a std::codecvt facet which encapsulates conversion between a UTF-8 encoded byte string and UTF-16 encoded character string. If Elem is…
std::codecvt_utf8 – std::codecvt_utf8 Synopsis Defined in header<codecvt> template < class Elem, (since C++ 11) unsigned long Maxcode = 0x10ffff, (deprecated in C++ 17) std::codecvt_mode Mode = (std::codecvt_mode)0 > class codecvt_utf8 : public std::codecvt<Elem, char, std::mbstate_t>; std::codecvt_utf8 is a std::codecvt facet which encapsulates conversion between a UTF-8 encoded byte string and UCS2 or UTF-32 character string…
std::codecvt_utf16 – std::codecvt_utf16 Synopsis Defined in header<codecvt> template <class Elem, unsigned long Maxcode = 0x10ffff, (since C++ 11) std::codecvt_mode Mode = (std::codecvt_mode)0> (deprecated in C++ 17) class codecvt_utf16 : public std::codecvt<Elem, char, std::mbstate_t>; std::codecvt_utf16 is a std::codecvt facet which encapsulates conversion between a UTF-16 encoded byte string and UCS2 or UTF-32 character string (depending on…