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. One has: z = creal(z) + I * cimag(z) VERSIONS These functions first appeared in glibc in version 2.1. ATTRIBUTES Multithreading (see pthreads(7)) The creal(), crealf(), and creall() functions are thread-safe. 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 3.74 of the Linux man-pages project. A description of the project, information about reporting bugs, and the latest version of this page, can be found at http://www.kernel.org/doc/man-pages/. 2013-09-18 CREAL(3)
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