5.8 KiB
[complex.ops]
29 Numerics library [numerics]
29.4 Complex numbers [complex.numbers]
29.4.6 Non-member operations [complex.ops]
template<class T> constexpr complex<T> operator+(const complex<T>& lhs);
Returns: complex(lhs).
template<class T> constexpr complex<T> operator+(const complex<T>& lhs, const complex<T>& rhs); template<class T> constexpr complex<T> operator+(const complex<T>& lhs, const T& rhs); template<class T> constexpr complex<T> operator+(const T& lhs, const complex<T>& rhs);
Returns: complex(lhs) += rhs.
template<class T> constexpr complex<T> operator-(const complex<T>& lhs);
Returns: complex(-lhs.real(),-lhs.imag()).
template<class T> constexpr complex<T> operator-(const complex<T>& lhs, const complex<T>& rhs); template<class T> constexpr complex<T> operator-(const complex<T>& lhs, const T& rhs); template<class T> constexpr complex<T> operator-(const T& lhs, const complex<T>& rhs);
Returns: complex(lhs) -= rhs.
template<class T> constexpr complex<T> operator*(const complex<T>& lhs, const complex<T>& rhs); template<class T> constexpr complex<T> operator*(const complex<T>& lhs, const T& rhs); template<class T> constexpr complex<T> operator*(const T& lhs, const complex<T>& rhs);
Returns: complex(lhs) *= rhs.
template<class T> constexpr complex<T> operator/(const complex<T>& lhs, const complex<T>& rhs); template<class T> constexpr complex<T> operator/(const complex<T>& lhs, const T& rhs); template<class T> constexpr complex<T> operator/(const T& lhs, const complex<T>& rhs);
Returns: complex(lhs) /= rhs.
template<class T> constexpr bool operator==(const complex<T>& lhs, const complex<T>& rhs); template<class T> constexpr bool operator==(const complex<T>& lhs, const T& rhs);
Returns: lhs.real() == rhs.real() && lhs.imag() == rhs.imag().
Remarks: The imaginary part is assumed to beT(), or 0.0, for theT arguments.
template<class T, class charT, class traits> basic_istream<charT, traits>& operator>>(basic_istream<charT, traits>& is, complex<T>& x);
Preconditions: The input values are convertible toT.
Effects: Extracts a complex number x of the form:u,(u), or(u,v), whereu is the real part andv is the imaginary part ([istream.formatted]).
If bad input is encountered, callsis.setstate(ios_base::failbit) (which may throwios_base::failure ([iostate.flags])).
Returns: is.
Remarks: This extraction is performed as a series of simpler extractions.
Therefore, the skipping of whitespace is specified to be the same for each of the simpler extractions.
template<class T, class charT, class traits> basic_ostream<charT, traits>& operator<<(basic_ostream<charT, traits>& o, const complex<T>& x);
Effects: Inserts the complex number x onto the stream o as if it were implemented as follows:basic_ostringstream<charT, traits> s; s.flags(o.flags()); s.imbue(o.getloc()); s.precision(o.precision()); s << '(' << x.real() << ',' << x.imag() << ')';return o << s.str();
[Note 1:
In a locale in which comma is used as a decimal point character, the use of comma as a field separator can be ambiguous.
Insertingshowpoint into the output stream forces all outputs to show an explicit decimal point character; as a result, all inserted sequences of complex numbers can be extracted unambiguously.
â end note]