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+'\" t
+.\" Copyright 2002 Walter Harms (walter.harms@informatik.uni-oldenburg.de)
+.\"
+.\" SPDX-License-Identifier: GPL-1.0-or-later
+.\"
+.TH conj 3 2023-07-20 "Linux man-pages 6.05.01"
+.SH NAME
+conj, conjf, conjl \- calculate the complex conjugate
+.SH LIBRARY
+Math library
+.RI ( libm ", " \-lm )
+.SH SYNOPSIS
+.nf
+.B #include <complex.h>
+.PP
+.BI "double complex conj(double complex " z );
+.BI "float complex conjf(float complex " z );
+.BI "long double complex conjl(long double complex " z );
+.fi
+.SH DESCRIPTION
+These functions return the complex conjugate value of
+.IR z .
+That is the value obtained by changing the sign of the imaginary part.
+.PP
+One has:
+.PP
+.in +4n
+.EX
+cabs(z) = csqrt(z * conj(z))
+.EE
+.in
+.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 conj (),
+.BR conjf (),
+.BR conjl ()
+T}	Thread safety	MT-Safe
+.TE
+.sp 1
+.SH STANDARDS
+C11, POSIX.1-2008.
+.SH HISTORY
+glibc 2.1.
+C99, POSIX.1-2001.
+.SH SEE ALSO
+.BR cabs (3),
+.BR csqrt (3),
+.BR complex (7)