creal - Man Page
get real part of a complex number
Library
Math library (libm, -lm)
Synopsis
#include <complex.h> double creal(double complex z); float crealf(float complex z); long double creall(long double complex z);
Description
These functions return the real part of the complex number z.
One has:
z = creal(z) + I * cimag(z)
Attributes
For an explanation of the terms used in this section, see attributes(7).
Interface | Attribute | Value |
---|---|---|
creal(), crealf(), creall() | Thread safety | MT-Safe |
Versions
GCC supports also __real__. That is a GNU extension.
Standards
C11, POSIX.1-2008.
History
glibc 2.1. C99, POSIX.1-2001.
See Also
Referenced By
The man pages crealf(3) and creall(3) are aliases of creal(3).
2024-05-02 Linux man-pages 6.9.1