cimagl(3) - Linux man page

Name

cimag, cimagf, cimagl - get imaginary part of a complex number

#include <complex.h>

double cimag(double complex z);
float cimagf(float complex z);
long double cimagl(long double complex z);

Link with -lm.

The cimag() function returns the imaginary part of the complex number z.

One has:

z = creal(z) + I * cimag(z)

These functions first appeared in glibc in version 2.1.

C99.

gcc also supports __imag__. That is a GNU extension.