Section: Linux Programmer's Manual (3)
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creal, crealf, creall - get real part of a complex number
double creal(double complex z);
float crealf(float complex z);
long double creall(long double complex z);
Link with -lm.
function returns the real part of the complex number
z = creal(z) + I * cimag(z)
These functions first appeared in glibc in version 2.1.
The gcc supports also __real__.
That is a GNU extension.
This page is part of release 3.54 of the Linux
A description of the project,
and information about reporting bugs,
can be found at
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Time: 03:36:23 GMT, January 24, 2018