Ubuntu Manpages

conj, conjf, conjl

calculate the complex conjugate

#include <complex.h>

double complex conj(double complex z);
float complex conjf(float complex z);
long double complex conjl(long double complex z);

Link with -lm.

The conj() function returns the complex conjugate value of z. That is the value obtained by changing the sign of the imaginary part.

One has:

    cabs(z) = csqrt(z * conj(z))

These functions first appeared in glibc in version 2.1.

see_pthreads(7))">

The conj(), conjf(), and conjl() functions are thread-safe.

C99.

cabs(3), csqrt(3), complex(7)

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