man/, share/mk/: Move man*/ to man/

[thirdparty/man-pages.git] / man3 / creal.3

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-'\" t
-.\" Copyright 2002 Walter Harms (walter.harms@informatik.uni-oldenburg.de)
-.\"
-.\" SPDX-License-Identifier: GPL-1.0-or-later
-.\"
-.TH creal 3 (date) "Linux man-pages (unreleased)"
-.SH NAME
-creal, crealf, creall \- get real part of a complex number
-.SH LIBRARY
-Math library
-.RI ( libm ", " \-lm )
-.SH SYNOPSIS
-.nf
-.B #include <complex.h>
-.P
-.BI "double creal(double complex " z );
-.BI "float crealf(float complex " z );
-.BI "long double creall(long double complex " z );
-.fi
-.SH DESCRIPTION
-These functions return the real part of the complex number
-.IR z .
-.P
-One has:
-.P
-.nf
-    z = creal(z) + I * cimag(z)
-.fi
-.SH ATTRIBUTES
-For an explanation of the terms used in this section, see
-.BR attributes (7).
-.TS
-allbox;
-lbx lb lb
-l l l.
-Interface      Attribute       Value
-T{
-.na
-.nh
-.BR creal (),
-.BR crealf (),
-.BR creall ()
-T}     Thread safety   MT-Safe
-.TE
-.SH VERSIONS
-GCC supports also __real__.
-That is a GNU extension.
-.SH STANDARDS
-C11, POSIX.1-2008.
-.SH HISTORY
-glibc 2.1.
-C99, POSIX.1-2001.
-.SH SEE ALSO
-.BR cabs (3),
-.BR cimag (3),
-.BR complex (7)