# std::complex<T>::operator=

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< cpp‎ | numeric‎ | complex

primary template complex<T> |  |
| (1) |
complex& operator=(const T& x); |  | (until C++20)
constexpr complex& operator=(const T& x); |  | (since C++20)
specialization complex<float> |  |
| (1) |
complex& operator=(float x); |  | (until C++20)
constexpr complex& operator=(float x); |  | (since C++20)
specialization complex<double> |  |
| (1) |
complex& operator=(double x); |  | (until C++20)
constexpr complex& operator=(double x); |  | (since C++20)
specialization complex<long double> |  |
| (1) |
complex& operator=(long double x); |  | (until C++20)
constexpr complex& operator=(long double x); |  | (since C++20)
all specializations |  |
| (2) |
complex& operator=(const complex& cx); |  | (until C++20)
constexpr complex& operator=(const complex& cx); |  | (since C++20)
| (3) |
template<class X> complex& operator=(const std::complex <X>& cx); |  | (until C++20)
template<class X> constexpr complex& operator=(const std::complex <X>& cx); |  | (since C++20)

Assigns new values to the contents.

1) Assigns `x` to the real part of the complex number. Imaginary part is set to zero.
2,3) Assigns `cx.real()` and `cx.imag()` to the real and the imaginary parts of the complex number respectively.

### Parameters

x | - | value to assign
cx | - | complex value to assign

### Return value

*this

### See also

(constructor) | constructs a complex number (public member function)
operator""ifoperator""ioperator""il (C++14) | A std::complex literal representing pure imaginary number (function)

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