| COS(3) | Library Functions Manual | COS(3) |
cos, cosf —
#include <math.h>
double
cos(double
x);
float
cosf(float
x);
cos() and 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).
cos() function returns the cosine value.
cos() function conforms to ANSI
X3.159-1989 (“ANSI C89”).
| May 2, 1991 | NetBSD 8.99 |