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conjf, conj, conjl

Defined in header <complex.h> 
float complex       conjf( float complex z );
-		 (1) (since C99) 
double complex      conj( double complex z );
-		 (2) (since C99) 
long double complex conjl( long double complex z );
-		 (3) (since C99)
Defined in header <tgmath.h> 
#define conj( z )
-		 (4) (since C99)
-1-3) Computes the complex conjugate of z by reversing the sign of the imaginary part.
-4) Type-generic macro: if z has type long double complex, long double imaginary, or long double, conjl is called. If z has type float complex, float imaginary, or float, conjf is called. If z has type double complex, double imaginary, double, or any integer type, conj is called.

Parameters

- -
z - complex argument

Return value

The complex conjugate of z.

-

Notes

On C99 implementations that do not implement I as _Imaginary_I, conj may be used to obtain complex numbers with negative zero imaginary part. In C11, the macro CMPLX is used for that purpose.

-

Example

#include <stdio.h>
-#include <complex.h>
- 
-int main(void)
-{
-    double complex z = 1.0 + 2.0*I;
-    double complex z2 = conj(z);
-    printf("The conjugate of %.1f%+.1fi is %.1f%+.1fi\n",
-            creal(z), cimag(z), creal(z2), cimag(z2));
- 
-    printf("Their product is %.1f%+.1fi\n", creal(z*z2), cimag(z*z2));
-}

Output:

-
The conjugate of 1.0+2.0i is 1.0-2.0i
-Their product is 5.0+0.0i

References

See also

-
C++ documentation for conj
-

- © cppreference.com
Licensed under the Creative Commons Attribution-ShareAlike Unported License v3.0.
- https://en.cppreference.com/w/c/numeric/complex/conj -

-
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