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);
Note
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 3.22 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/.
Copyright 2002 Walter Harms (walter.harmsinformatik.uni-oldenburg.de)
Distributed under GPL