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fea681da 1.\" Copyright 2002 Walter Harms (walter.harms@informatik.uni-oldenburg.de)
2297bf0e 2.\"
38f20bb9 3.\" %%%LICENSE_START(GPL_NOVERSION_ONELINE)
fea681da 4.\" Distributed under GPL
38f20bb9 5.\" %%%LICENSE_END
fea681da 6.\"
4b8c67d9 7.TH CTANH 3 2017-09-15 "" "Linux Programmer's Manual"
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8.SH NAME
9ctanh, ctanhf, ctanhl \- complex hyperbolic tangent
10.SH SYNOPSIS
11.B #include <complex.h>
68e4db0a 12.PP
fea681da 13.BI "double complex ctanh(double complex " z ");"
d39541ec 14.br
fea681da 15.BI "float complex ctanhf(float complex " z );
d39541ec 16.br
fea681da 17.BI "long double complex ctanhl(long double complex " z ");"
68e4db0a 18.PP
20c58d70 19Link with \fI\-lm\fP.
fea681da 20.SH DESCRIPTION
4f337c12
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21These functions calculate the complex hyperbolic tangent of
22.IR z .
847e0d88 23.PP
daac0b39
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24The complex hyperbolic tangent function is defined
25mathematically as:
207050fa 26.PP
daac0b39 27.nf
daac0b39
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28 ctanh(z) = csinh(z) / ccosh(z)
29.fi
f0d7ce1d
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30.SH VERSIONS
31These functions first appeared in glibc in version 2.1.
8716ac07
MS
32.SH ATTRIBUTES
33For an explanation of the terms used in this section, see
34.BR attributes (7).
35.TS
36allbox;
37lbw27 lb lb
38l l l.
39Interface Attribute Value
40T{
41.BR ctanh (),
42.BR ctanhf (),
43.BR ctanhl ()
44T} Thread safety MT-Safe
45.TE
847e0d88 46.sp 1
47297adb 47.SH CONFORMING TO
9a74e018 48C99, POSIX.1-2001, POSIX.1-2008.
47297adb 49.SH SEE ALSO
fea681da 50.BR cabs (3),
f54fb0fa 51.BR catanh (3),
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52.BR ccosh (3),
53.BR csinh (3),
a8bda636 54.BR complex (7)