COS(3) Linux Programmer s Manual COS(3)

NAME cos, cosf, cosl - cosine function

SYNOPSIS #include <math.h>

double cos(double x); float cosf(float x); long double cosl(long double x);

Link with -lm.

DESCRIPTION The cos() function returns the cosine of x, where x is given in radi- ans.

RETURN VALUE The cos() function returns a value between -1 and 1.

CONFORMING TO SVr4, 4.3BSD, C99. The float and long double variants are C99 require- ments.

SEE ALSO acos(3), asin(3), atan(3), atan2(3), ccos(3), sin(3), tan(3)

2002-07-27 COS(3)