#define conj( z )
(4) (since C99) 1-3)Computes the
complex conjugateof
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.
[edit] Parameters [edit] Return valueThe complex conjugate of z.
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.
#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[edit] References
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