NAME
tan, tanf,
tanl —
tangent functions
SYNOPSIS
#include
<math.h>
double
tan(double
x);
float
tanf(float
x);
long double
tanl(long
double x);
DESCRIPTION
The
tan()
function computes the tangent of x (measured in
radians). The
tanf()
function is a single precision version of tan(). The
tanl()
function is an extended precision version of tan().
A large magnitude argument may yield a result with little or no
significance.
RETURN VALUES
The tan(), tanf()
and tanl() functions return the tangent value.
SEE ALSO
acos(3), asin(3), atan(3), atan2(3), cos(3), cosh(3), sin(3), sinh(3), tanh(3)
STANDARDS
The tan() function conforms to
ANSI X3.159-1989
(“ANSI C89”).