CREALSection: Linux Programmer's Manual (3)
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NAMEcreal, 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);
DESCRIPTIONThe creal() function returns the real part of the complex number z.
z = creal(z) + I * cimag(z)
VERSIONSThese functions first appeared in glibc in version 2.1.
NOTESThe gcc supports also __real__. That is a GNU extension.
SEE ALSOcabs(3), cimag(3), complex(7)
COLOPHONThis page is part of release 3.21 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/.