COS(3)

NAME
cos, cosf - cosine functions

SYNOPSIS
#include <math.h>
double
cos(double x);
float
cos(float x);

DESCRIPTION
The cos() and the cosf() functions compute the cosine 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 cos() and the cosf() functions return the cosine value.

SEE ALSO
sin(3), tan(3), asin(3), acos(3), atan(3), atan2(3), sinh(3), cosh(3), tanh(3), math(3)

STANDARDS
The cos() function conforms to ansiC.