Man Pages

CREAL


NAME
SYNOPSIS
DESCRIPTION
VERSIONS
ATTRIBUTES
CONFORMING TO
NOTES
SEE ALSO
COLOPHON

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

These functions return 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

For an explanation of the terms used in this section, see attributes(7).

CONFORMING TO

C99, POSIX.1-2001, POSIX.1-2008.

NOTES

The gcc supports also __real__. That is a GNU extension.

SEE ALSO

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

COLOPHON

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