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.


These functions return 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.


For an explanation of the terms used in this section, see attributes(7).

Interface Attribute Value
cimag(), cimagf(), cimagl() Thread safety MT-Safe

Conforming to

C99, POSIX.1-2001, POSIX.1-2008.


gcc also supports __imag__. That is a GNU extension.

See Also

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


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Referenced By

cabs(3), cacosh(3), casinh(3), catanh(3), complex(7), creal(3).

The man pages cimagf(3) and cimagl(3) are aliases of cimag(3).

2015-04-19 Linux Programmer's Manual