std::complex::operator+(unary),operator-(unary) (3) Linux Manual Page

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

Synopsis

template <class T>
(until C++ 20)

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

template <class T>
(since C++ 20)

    constexpr std::complex<T>
    operator+(const std::complex<T> &val);
(1)

    template <class T>
    (until C++ 20)

        std::complex<T>
        operator-(const std::complex<T> &val);
(2)

    template <class T>
    (since C++ 20)

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

Implements the analogs of the unary arithmetic operators for complex numbers.
1) Returns the value of its argument
2) Negates the argument

Parameters

val – the complex number argument

Return value

1) a copy of the argument, std::complex<T>(val)
2) negated argument, std::complex<T>(-val.real(), -val.imag())

See also

operator+ performs complex number arithmetics on two complex values or a complex and a scalar
operator- (function template)
operator*
operator/