#include <math.h> double
cos (double x); float
cosf (float x);
DESCRIPTION
The
cos ();
and the
cosf ();
functions compute the cosine 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
math(3).
RETURN VALUES
The
cos ();
and the
cosf ();
functions return the cosine value.
