table of contents
creal(3) | Library Functions Manual | creal(3) |
NAME¶
creal, crealf, creall - 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¶
2024-05-02 | Linux man-pages 6.9.1 |