std::complex<T>:: operator=
From cppreference.com
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All specializations
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| (1) | ||
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complex
&
operator
=
(
const
complex
&
cx
)
;
|
(until C++20) | |
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constexpr
complex
&
operator
=
(
const
complex
&
cx
)
;
|
(since C++20) | |
| (2) | ||
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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) | |
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Primary template
complex<T>
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| (3) | ||
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complex
&
operator
=
(
const
T
&
x
)
;
|
(until C++20) | |
|
constexpr
complex
&
operator
=
(
const
T
&
x
)
;
|
(since C++20) | |
|
Specializations for standard floating-point types
complex<F>
(until C++23)
|
||
| (3) | ||
|
complex
&
operator
=
(
F x
)
;
|
(until C++20) | |
|
constexpr
complex
&
operator
=
(
F x
)
;
|
(since C++20)
(until C++23) |
|
Assigns new values to the contents.
1,2)
Assigns
cx.real()
and
cx.imag()
to the real and the imaginary parts of the complex number respectively.
The copy assignment operator
(1)
is
trivial
when
T
is a floating-point type.
(since C++23)
3)
Assigns
x
to the real part of the complex number. Imaginary part is set to zero.
Parameters
| x | - | value to assign |
| cx | - | complex value to assign |
Return value
* this
Notes
The copy assignment operator is required to be trivial since C++23, but implementations generally make it trivial in all modes.
Defect reports
The following behavior-changing defect reports were applied retroactively to previously published C++ standards.
| DR | Applied to | Behavior as published | Correct behavior |
|---|---|---|---|
| LWG 3935 | C++98 | the description of overload (2) was missing | added |
See also
|
constructs a complex number
(public member function) |
|
|
a
std::complex
literal representing purely imaginary number
(function) |