Cosine
[Classification]
Mathematical library
[Syntax]
#include <math.h>
float __far cosf(float x);
[Return value]
Returns the cosine of x.
If x is Not-a-Number or , cosf returns a Not-a-Number (NaN) and sets macro EDOM to global variable errno.
If the solution is a denormal number, cosf sets macro ERANGE to global variable errno.
[Description]
This function calculates the cosine of x. Specify the angle in radian.