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

USAGE
       #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).

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

CONFORMING TO
       C99

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