mirror of https://github.com/mkerrisk/man-pages
52 lines
1.1 KiB
Groff
52 lines
1.1 KiB
Groff
.\" Copyright 2002 Walter Harms (walter.harms@informatik.uni-oldenburg.de)
|
|
.\"
|
|
.\" %%%LICENSE_START(GPL_NOVERSION_ONELINE)
|
|
.\" Distributed under GPL
|
|
.\" %%%LICENSE_END
|
|
.\"
|
|
.TH CONJ 3 2015-04-19 "" "Linux Programmer's Manual"
|
|
.SH NAME
|
|
conj, conjf, conjl \- calculate the complex conjugate
|
|
.SH SYNOPSIS
|
|
.B #include <complex.h>
|
|
.PP
|
|
.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 );
|
|
.PP
|
|
Link with \fI\-lm\fP.
|
|
.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:
|
|
.nf
|
|
|
|
cabs(z) = csqrt(z * conj(z))
|
|
.fi
|
|
.SH VERSIONS
|
|
These functions first appeared in glibc in version 2.1.
|
|
.SH ATTRIBUTES
|
|
For an explanation of the terms used in this section, see
|
|
.BR attributes (7).
|
|
.TS
|
|
allbox;
|
|
lbw24 lb lb
|
|
l l l.
|
|
Interface Attribute Value
|
|
T{
|
|
.BR conj (),
|
|
.BR conjf (),
|
|
.BR conjl ()
|
|
T} Thread safety MT-Safe
|
|
.TE
|
|
.SH CONFORMING TO
|
|
C99, POSIX.1-2001, POSIX.1-2008.
|
|
.SH SEE ALSO
|
|
.BR cabs (3),
|
|
.BR csqrt (3),
|
|
.BR complex (7)
|