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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 CTAN 3 2017-09-15 "" "Linux Programmer's Manual"
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8.SH NAME
9ctan, ctanf, ctanl \- complex tangent function
10.SH SYNOPSIS
11.B #include <complex.h>
68e4db0a 12.PP
fea681da 13.BI "double complex ctan(double complex " z ");"
d39541ec 14.br
fea681da 15.BI "float complex ctanf(float complex " z );
d39541ec 16.br
fea681da 17.BI "long double complex ctanl(long double complex " z ");"
68e4db0a 18.PP
20c58d70 19Link with \fI\-lm\fP.
fea681da 20.SH DESCRIPTION
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21These functions calculate the complex tangent of
22.IR z .
847e0d88 23.PP
51065a83 24The complex tangent function is defined as:
207050fa 25.PP
51065a83 26.nf
51065a83
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27 ctan(z) = csin(z) / ccos(z)
28.fi
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29.SH VERSIONS
30These functions first appeared in glibc in version 2.1.
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31.SH ATTRIBUTES
32For an explanation of the terms used in this section, see
33.BR attributes (7).
34.TS
35allbox;
36lbw24 lb lb
37l l l.
38Interface Attribute Value
39T{
40.BR ctan (),
41.BR ctanf (),
42.BR ctanl ()
43T} Thread safety MT-Safe
44.TE
847e0d88 45.sp 1
47297adb 46.SH CONFORMING TO
9a74e018 47C99, POSIX.1-2001, POSIX.1-2008.
47297adb 48.SH SEE ALSO
fea681da 49.BR cabs (3),
f54fb0fa 50.BR catan (3),
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51.BR ccos (3),
52.BR csin (3),
a8bda636 53.BR complex (7)