CIMAG(3) Linux Programmer s Manual CIMAG(3)

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

SYNOPSIS #include <complex.h>

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

Link with -lm.

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

One has:

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

VERSIONS These functions first appeared in glibc in version 2.1.


NOTES gcc also supports __imag__. That is a GNU extension.

SEE ALSO cabs(3), creal(3), complex(7)

COLOPHON This page is part of release 3.22 of the Linux man-pages project. A description of the project, and information about reporting bugs, can be found at

2008-08-11 CIMAG(3)