Improved comments for the minimax polynomial.

This commit is contained in:
Bruce Evans 2005-11-12 19:54:45 +00:00
parent 006846f7ae
commit 787d6d77d5
Notes: svn2git 2020-12-20 02:59:44 +00:00
svn path=/head/; revision=152340

View file

@ -21,12 +21,12 @@ static char rcsid[] = "$FreeBSD$";
#include "math.h"
#include "math_private.h"
/* Range of maximum relative error in polynomial: ~[-1.15e-10, 1.169e-10]. */
/* |cos(x) - c(x)| < 2**-33.1 (~[-9.39e-11, 1.083e-10]). */
static const float
one = 1.0,
C1 = 0xaaaaa5.0p-28, /* 0.04166664555668830871582031250 */
C2 = -0xb60615.0p-33, /* -0.001388731063343584537506103516 */
C3 = 0xccf47d.0p-39; /* 0.00002443254288664320483803749084 */
C1 = 0xaaaaa5.0p-28, /* 0.041666645557 */
C2 = -0xb60615.0p-33, /* -0.0013887310633 */
C3 = 0xccf47d.0p-39; /* 0.000024432542887 */
float
__kernel_cosf(float x, float y)