CREAL(3) Linux Programmer s Manual CREAL(3)
NAME 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);
Link with -lm.
DESCRIPTION The creal() function returns the real part of the complex number z.
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/.