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+.\" Copyright 2002 Walter Harms (walter.harms@informatik.uni-oldenburg.de)
+.\" Distributed under GPL
+.\"
+.TH CONJ 3 2002-07-28 "" "complex math routines"
+.SH NAME
+conj, conjf, conjl \- calculate the complex conjugate
+.SH SYNOPSIS
+.B #include <complex.h>
+.sp
+.BI "double complex conj(double complex " z );
+.sp
+.BI "float complex conjf(float complex " z );
+.sp
+.BI "long double complex conjl(long double complex " z );
+.sp
+Link with \-lm.
+.SH DESCRIPTION
+The conj() function returns the complex conjugate value of z.
+That is the value obtained by changing the sign of the imaginary part.
+.LP
+One has cabs(z) = csqrt(z * conj(z)).
+.SH "CONFORMING TO"
+C99
+.SH "SEE ALSO"
+.BR cabs (3),
+.BR sqrt (3),
+.BR complex (5)