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Showing content from https://cplusplus.com/reference/complex/conj/ below:

function template

std::conj complex (1)

template<class T> complex<T> conj (const complex<T>& x);

complex (1)

template<class T> complex<T> conj (const complex<T>& x);

arithmetic type (2)

complex<double> conj (ArithmeticType x);

Complex conjugate

Returns the conjugate of the complex number x.

The conjugate of a complex number (real,imag) is (real,-imag).

Only available for instantiations of

complex

Additional overloads

are provided for arguments of any

fundamental arithmetic type

: In this case, the function assumes the value has a zero

imaginary

component.

The return type is

complex<double>

, except if the argument is

float

long double

(in which case, the return type is the

complex

instantiation for that type: either

complex<float>

complex<long double>

Parameters

x: Complex value.

Return value Complex conjugate value of x.

Example

// conj example
#include <iostream>     // std::cout
#include <complex>      // std::complex, std::conj

int main ()
{
  std::complex<double> mycomplex (10.0,2.0);

  std::cout << "The conjugate of " << mycomplex << " is " << std::conj(mycomplex) << '\n';

  return 0;
}

Output:

The conjugate of (10,2) is (10,-2)