xref: /dragonfly/contrib/openbsd_libm/man/tan.3 (revision e5a92d33)
1.\"	$OpenBSD: tan.3,v 1.12 2013/06/05 03:40:26 tedu Exp $
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29.\"     from: @(#)tan.3	5.1 (Berkeley) 5/2/91
30.\"
31.Dd $Mdocdate: June 5 2013 $
32.Dt TAN 3
33.Os
34.Sh NAME
35.Nm tan ,
36.Nm tanf ,
37.Nm tanl
38.Nd tangent functions
39.Sh SYNOPSIS
40.In math.h
41.Ft double
42.Fn tan "double x"
43.Ft float
44.Fn tanf "float x"
45.Ft long double
46.Fn tanl "long double x"
47.Sh DESCRIPTION
48The
49.Fn tan
50function computes the tangent of
51.Fa x
52(measured in radians).
53The
54.Fn tanf
55function is a single precision version of
56.Fn tan .
57The
58.Fn tanl
59function is an extended precision version of
60.Fn tan .
61A large magnitude argument may yield a result
62with little or no significance.
63.Sh RETURN VALUES
64The
65.Fn tan ,
66.Fn tanf
67and
68.Fn tanl
69functions return the tangent value.
70.Sh SEE ALSO
71.Xr acos 3 ,
72.Xr asin 3 ,
73.Xr atan 3 ,
74.Xr atan2 3 ,
75.Xr cos 3 ,
76.Xr cosh 3 ,
77.Xr sin 3 ,
78.Xr sinh 3 ,
79.Xr tanh 3
80.Sh STANDARDS
81The
82.Fn tan
83function conforms to
84.St -ansiC .
85