std::imag(std::complex)

C++

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Named requirements

Language support library

Concepts library (C++20)

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Regular expressions library (C++11)

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Technical Specifications

Numerics library

Common mathematical functions

Special mathematical functions

Floating-point environment (C++11)

Complex numbers

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Compile-time rational arithmetic (C++11)

Numeric algorithms

gcd (C++17)

lcm (C++17)

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iota (C++11)

accumulate

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reduce (C++17)

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inclusive_scan (C++17)

exclusive_scan (C++17)

transform_inclusive_scan (C++17)

transform_exclusive_scan (C++17)

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bit_cast (C++20)

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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)

Defined in header <complex>
	(1)
template< class T > T imag( const std::complex<T>& z );			(until C++14)
template< class T > constexpr T imag( const std::complex<T>& z );			(since C++14)
		(2)
float imag( float z ); template< class DoubleOrInteger > double imag( DoubleOrInteger z ); long double imag( long double z );				(since C++11) (until C++14)
constexpr float imag( float z ); template< class DoubleOrInteger > constexpr double imag( DoubleOrInteger z ); constexpr long double imag( long double z );				(since C++14)

1) Returns the imaginary component of the complex number z, i.e. z.imag().

2) Additional overloads are provided for float, double, long double, and all integer types, which are treated as complex numbers with zero imaginary component.

(since C++11)

Parameters

z

-

complex value

Return value

the imaginary component of z

See also

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