std::conj(std::complex)

 

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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!= (until C++20)   operator<<operator>> get(std::complex) (C++26)	real imag abs arg norm conj proj (C++11) polar operator""ioperator""ifoperator""il (C++14)(C++14)(C++14)
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sinh   cosh tanh asinh (C++11) acosh (C++11) atanh (C++11)
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tuple_size<std::complex> (C++26)
tuple_element<std::complex> (C++26)

 

Defined in header <complex>
template< class T > complex<T> conj( const complex<T>& z );	(1)
std::complex<long double> conj( long double z );	(2)	(since C++11)
template< class DoubleOrIngeter > std::complex<double> conj( DoubleOrInteger z );	(3)	(since C++11)
std::complex<float> conj( float z );	(4)	(since C++11)

Computes the complex conjugate of z by reversing the sign of the imaginary part.

(since C++11)Additional overloads are provided for float, double, long double, and all integer types, which are treated as complex numbers with zero imaginary component.

Parameters

z

-

complex value

Return value

The complex conjugate of z

Example

Run this code

#include <iostream>
#include <complex>
 
int main()
{
    std::complex<double> z(1,2);
    std::cout << "The conjugate of " << z << " is " << std::conj(z) << '\n'
              << "Their product is " << z*std::conj(z) << '\n';
}

Output:

The conjugate of (1,2) is (1,-2)
Their product is (5,0)

See also

abs(std::complex)	returns the magnitude of a complex number (function template)
norm	returns the squared magnitude (function template)
polar	constructs a complex number from magnitude and phase angle (function template)
C documentation for conj