creall(3) -- Linux man page

 

NAME

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

SYNOPSIS

#include <complex.h>

double creal(double complex z);

float crealf(float double complex z);

long double creall(long double complex z);

 

DESCRIPTION

The creal() function returns the real part of the complex number z.

One has z = creal(z) + I*cimag(z).  

NOTE

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

CONFORMING TO

C99  

SEE ALSO

cabs(3), cimag(3), complex(5)