std::complex<T>::imag

 

C++

Language

Standard Library Headers

Freestanding and hosted implementations

Named requirements

Language support library

Concepts library (C++20)

Diagnostics library

Utilities library

Strings library

Containers library

Iterators library

Ranges library (C++20)

Algorithms library

Numerics library

Input/output library

Localizations library

Regular expressions library (C++11)

Atomic operations library (C++11)

Thread support library (C++11)

Filesystem library (C++17)

Technical Specifications

 

Numerics library

Common mathematical functions

Special mathematical functions

Floating-point environment (C++11)

Complex numbers

Numeric arrays

Pseudo-random number generation

Compile-time rational arithmetic (C++11)

Numeric algorithms

gcd (C++17)

lcm (C++17)

Interpolations

midpoint (C++20)

lerp (C++20)

Generic numeric operations

iota (C++11)

accumulate

inner_product

adjacent_difference

partial_sum

reduce (C++17)

transform_reduce (C++17)

inclusive_scan (C++17)

exclusive_scan (C++17)

transform_inclusive_scan (C++17)

transform_exclusive_scan (C++17)

Bit operations

bit_cast (C++20)

ispow2 (C++20)

ceil2 (C++20)

floor2 (C++20)

log2p1 (C++20)

 

std::complex

Member functions
complex::complex
complex::operator=
complex::real
complex::imag
complex::operator+=complex::operator-=complex::operator*=complex::operator/=
Non-member functions
operator+operator- operator+operator-operator*operator/ operator==operator!= operator<<operator>>	real imag abs arg norm conj proj (C++11) polar operator""ioperator""ifoperator""il (C++14)(C++14)(C++14)
Exponential functions
exp
log
log10
Power functions
pow
sqrt
Trigonometric functions
sin cos tan	asin (C++11) acos (C++11) atan (C++11)
Hyperbolic functions
sinh cosh tanh	asinh (C++11) acosh (C++11) atanh (C++11)

 

primary template complex<T>
	(1)
T imag() const;			(until C++14)
constexpr T imag() const;			(since C++14)
		(2)
void imag( T value );				(until C++20)
constexpr void imag( T value );				(since C++20)
specialization complex<float>
			(1)
float imag() const;					(until C++11)
constexpr float imag();					(since C++11) (until C++14)
constexpr float imag() const;					(since C++14)
				(2)
void imag( float value );						(until C++20)
constexpr void imag( float value );						(since C++20)
specialization complex<double>
					(1)
double imag() const;							(until C++11)
constexpr double imag();							(since C++11) (until C++14)
constexpr double imag() const;							(since C++14)
						(2)
void imag( double value );								(until C++20)
constexpr void imag( double value );								(since C++20)
specialization complex<long double>
							(1)
long double imag() const;									(until C++11)
constexpr long double imag();									(since C++11) (until C++14)
constexpr long double imag() const;									(since C++14)
								(2)
void imag( long double value );										(until C++20)
constexpr void imag( long double value );										(since C++20)

Accesses the imaginary part of the complex number.

1) Returns the imaginary part.

2) Sets the imaginary part to value.

Parameters

value

-

the value to set the imaginary part to

See also

imag	returns the imaginary component (function template)
real	accesses the real part of the complex number (public member function)