NAME
tan,
tanf
- tangent function
LIBRARY
Math Library (libm, -lm)
SYNOPSIS
double
tan(double x)
float
tanf(float x)
DESCRIPTION
The
tan()
and
tanf()
functions compute the tangent of
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
math(3).
RETURN VALUES
The
tan()
function returns the tangent value.
SEE ALSO
acos(3),
asin(3),
atan(3),
atan2(3),
cos(3),
cosh(3),
math(3),
sin(3),
sinh(3),
tanh(3)
STANDARDS
The
tan()
function conforms to
ANSI X3.159-1989 (``ANSI C89'') .