.\" Copyright 2002 Walter Harms (walter.harms@informatik.uni-oldenburg.de)
.\" Distributed under GPL
.\"
.TH CONJ 3 2008-08-11 "" "Linux Programmer's Manual"
.SH NAME
conj, conjf, conjl \- calculate the complex conjugate
.SH SYNOPSIS
.B #include <complex.h>
.sp
.BI "double complex conj(double complex " z );
.br
.BI "float complex conjf(float complex " z );
.br
.BI "long double complex conjl(long double complex " z );
.sp
Link with \fI\-lm\fP.
.SH DESCRIPTION
The
.BR conj ()
function returns the complex conjugate value of
.IR z .
That is the value obtained by changing the sign of the imaginary part.
.LP
One has:
.nf

    cabs(z) = csqrt(z * conj(z))
.fi
.SH VERSIONS
These functions first appeared in glibc in version 2.1.
.SH "CONFORMING TO"
C99.
.SH "SEE ALSO"
.BR cabs (3),
.BR csqrt (3),
.BR complex (7)
.SH COLOPHON
This page is part of release 3.44 of the Linux
.I man-pages
project.
A description of the project,
and information about reporting bugs,
can be found at
http://www.kernel.org/doc/man-pages/.