[thirdparty/man-pages.git] / man3 / catanh.3

.\" Copyright 2002 Walter Harms (walter.harms@informatik.uni-oldenburg.de)
.\" Distributed under GPL
.\"
.TH CATANH 3 2002-07-28 "" "Linux Programmer's Manual"
.SH NAME
catanh, catanhf, catanhl \- complex arc tangents hyperbolic
.SH SYNOPSIS
.B #include <complex.h>
.sp
.BI "double complex catanh(double complex " z );
.br
.BI "float complex catanhf(float complex " z );
.br
.BI "long double complex catanhl(long double complex " z );
.sp
Link with \fI\-lm\fP.
.SH DESCRIPTION
The
.BR catanh ()
function calculates the complex atanh(3).
If y = catanh(z), then z = ctanh(y).
The imaginary part of y is chosen in the interval [\-pi/2,pi/2].
.LP
One has catanh(z) = 0.5 * clog((1 + z) / (1 \- z)).
.SH "CONFORMING TO"
C99
.SH "SEE ALSO"
.BR atanh (3),
.BR cabs (3),
.BR cimag (3),
.BR complex (7)
Commit	Line	Data
fea681da MK	1	.\" Copyright 2002 Walter Harms (walter.harms@informatik.uni-oldenburg.de)
	2	.\" Distributed under GPL
	3	.\"
0ed55ece	4	.TH CATANH 3 2002-07-28 "" "Linux Programmer's Manual"
fea681da MK	5	.SH NAME
	6	catanh, catanhf, catanhl \- complex arc tangents hyperbolic
	7	.SH SYNOPSIS
	8	.B #include <complex.h>
	9	.sp
c13182ef	10	.BI "double complex catanh(double complex " z );
d39541ec	11	.br
fea681da	12	.BI "float complex catanhf(float complex " z );
d39541ec	13	.br
fea681da MK	14	.BI "long double complex catanhl(long double complex " z );
fea681da MK	15	.sp
20c58d70	16	Link with \fI\-lm\fP.
fea681da	17	.SH DESCRIPTION
c13182ef MK	18	The
c13182ef MK	19	.BR catanh ()
d80882c7	20	function calculates the complex atanh(3).
fea681da	21	If y = catanh(z), then z = ctanh(y).
8c383102	22	The imaginary part of y is chosen in the interval [\-pi/2,pi/2].
fea681da	23	.LP
f262c004	24	One has catanh(z) = 0.5 * clog((1 + z) / (1 \- z)).
fea681da MK	25	.SH "CONFORMING TO"
	26	C99
	27	.SH "SEE ALSO"
	28	.BR atanh (3),
	29	.BR cabs (3),
	30	.BR cimag (3),
a8bda636	31	.BR complex (7)