6.2.45 conj Function

Calculates the complex conjugate of a double precision complex value.

Include

<complex.h>

Prototype

double complex conj(double complex z);

Argument

z

value for which to return the complex conjugate

Return Value

Returns the complex conjugate of z, being the value of the argument with the sign of the imaginary part reversed.

Example

See the notes at the beginning of this chapter or section for information on using printf() or scanf() (and other functions reading and writing the stdin or stdout streams) in the example code.

#include <stdio.h>
#include <complex.h>

int main(void)
{
  double complex x, y;

  x = -2.0 + 1.0*I;
  y = conj(x);
  printf("The complex conjugate of %f + %fi is %f + %fi\n", creal(x), cimag(x), creal(y), cimag(y));
}

Example Output

The complex conjugate of -2.000000 + 1.000000i is -2.000000 + -1.000000i