2004-11-03 13:51:07 +00:00
|
|
|
.\" Copyright 2002 Walter Harms (walter.harms@informatik.uni-oldenburg.de)
|
|
|
|
|
.\" Distributed under GPL
|
|
|
|
|
.\"
|
2007-05-18 08:43:42 +00:00
|
|
|
.TH CACOS 3 2002-07-28 "" "Linux Programmer's Manual"
|
2004-11-03 13:51:07 +00:00
|
|
|
.SH NAME
|
|
|
|
|
cacos, cacosf, cacosl \- complex arc cosine
|
|
|
|
|
.SH SYNOPSIS
|
|
|
|
|
.B #include <complex.h>
|
|
|
|
|
.sp
|
2007-04-12 22:42:49 +00:00
|
|
|
.BI "double complex cacos(double complex " z );
|
2004-11-11 17:28:42 +00:00
|
|
|
.br
|
2007-04-12 22:42:49 +00:00
|
|
|
.BI "float complex cacosf(float complex " z );
|
2004-11-11 17:28:42 +00:00
|
|
|
.br
|
2007-04-12 22:42:49 +00:00
|
|
|
.BI "long double complex cacosl(long double complex " z );
|
2004-11-03 13:51:07 +00:00
|
|
|
.sp
|
2007-07-21 05:25:03 +00:00
|
|
|
Link with \fI\-lm\fP.
|
2004-11-03 13:51:07 +00:00
|
|
|
.SH DESCRIPTION
|
2007-04-12 22:42:49 +00:00
|
|
|
The
|
|
|
|
|
.BR cacos ()
|
2007-11-16 06:41:19 +00:00
|
|
|
function calculates the complex acos(3).
|
2004-11-03 13:51:07 +00:00
|
|
|
If y = cacos(z), then z = ccos(y).
|
|
|
|
|
The real part of y is chosen in the interval [0,pi].
|
|
|
|
|
.LP
|
2007-05-01 08:15:41 +00:00
|
|
|
One has cacos(z) = \-i clog(z + csqrt(z * z \- 1)).
|
2004-11-03 13:51:07 +00:00
|
|
|
.SH "CONFORMING TO"
|
|
|
|
|
C99
|
|
|
|
|
.SH "SEE ALSO"
|
|
|
|
|
.BR ccos (3),
|
|
|
|
|
.BR clog (3),
|
2006-04-21 01:24:06 +00:00
|
|
|
.BR complex (7)
|
