xref: /freebsd/lib/msun/man/tan.3 (revision 75141cc9877bd4c86b39c602f68ae5dc205cefdb)

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.\"     from: @(#)tan.3	5.1 (Berkeley) 5/2/91
.\"	$FreeBSD$
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.Dd May 2, 1991
.Dt TAN 3
.Os
.Sh NAME
.Nm tan ,
.Nm tanf
.Nd tangent functions
.Sh SYNOPSIS
.Fd #include <math.h>
.Ft double
.Fn tan "double x"
.Ft float
.Fn tanf "float x"
.Sh DESCRIPTION
The
.Fn tan
and the
.Fn tanf
functions compute the tangent of
.Fa x
(measured in radians).
A large magnitude argument may yield a result
with little or no significance.
For a discussion of error due to roundoff, see
.Xr math 3 .
.Sh RETURN VALUES
The
.Fn tan
function returns the tangent value.
.Sh SEE ALSO
.Xr acos 3 ,
.Xr asin 3 ,
.Xr atan 3 ,
.Xr atan2 3 ,
.Xr cos 3 ,
.Xr cosh 3 ,
.Xr math 3 ,
.Xr sin 3 ,
.Xr sinh 3 ,
.Xr tanh 3
.Sh STANDARDS
The
.Fn tan
function conforms to
.St -ansiC .