NAME


creal, crealf, creall - get real part of a complex number

SYNOPSIS


#include <complex.h>

double creal(double complex z); float crealf(float complex z); long double creall(long double complex z);

Link with -lm.

DESCRIPTION


The creal() function returns the real 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.

CONFORMING TO


C99.

NOTES


The gcc supports also __real__. That is a GNU extension.

SEE ALSO


cabs(3), cimag(3), complex(7)

COLOPHON


This page is part of release 3.23 of the Linux man-pages project. A description of the project, and information about reporting bugs, can be found at http://www.kernel.org/doc/man-pages/.

openSUSE Logo

Contents