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GNU/Linux man pages

Livre :
Expressions régulières,
Syntaxe et mise en oeuvre :

ISBN : 978-2-7460-9712-4
EAN : 9782746097124
(Editions ENI)

GNU/Linux

Debian 6.0.5

(Squeeze)

crealf(3)
CREAL

CREAL

NAME
SYNOPSIS
DESCRIPTION
VERSIONS
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

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.

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 3.27 of the Linux man-pages project. A description of the project, and information about reporting bugs, can be found at http://www.kernel.org/doc/man-pages/.

crealf(3)