std::complex<T>::operator+(unary), operator-(unary)

Since C++20

Implements the analogs of the unary arithmetic operators for complex numbers.

# Declarations

template< class T >
std::complex<T> operator+( const std::complex<T>& val );

(until C++20)

template< class T >
constexpr std::complex<T> operator+( const std::complex<T>& val );

(since C++20)

template< class T >
std::complex<T> operator-( const std::complex<T>& val );

(until C++20)

template< class T >
constexpr std::complex<T> operator-( const std::complex<T>& val );

(since C++20)