Man page - creal(3)

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creal

NAME
LIBRARY
SYNOPSIS
DESCRIPTION
ATTRIBUTES
VERSIONS
STANDARDS
HISTORY
SEE ALSO

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).

Image grohtml-259525-1.png

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

cabs (3), cimag (3), complex (7)