Home | History | Annotate | Download | only in noieee_src

Lines Matching refs:cos

76  * 		j0(x) = sqrt(2/(pi*x))*(p0(x)*cos(x0)-q0(x)*sin(x0))
77  * 	   where x0 = x-pi/4. It is better to compute sin(x0),cos(x0)
79  *		cos(x0) = cos(x)cos(pi/4)+sin(x)sin(pi/4)
80  *			= 1/sqrt(2) * (cos(x) + sin(x))
81  *		sin(x0) = sin(x)cos(pi/4)-cos(x)sin(pi/4)
82  *			= 1/sqrt(2) * (sin(x) - cos(x))
84  *		sin(x) +- cos(x) = -cos(2x)/(sin(x) -+ cos(x))
106  * 		y0(x) = sqrt(2/(pi*x))*(p0(x)*cos(x0)+q0(x)*sin(x0))
107  * 	   where x0 = x-pi/4. It is better to compute sin(x0),cos(x0)
156 		c = cos(x);
160 		    z = -cos(x+x);
237         /* y0(x) = sqrt(2/(pi*x))*(p0(x)*sin(x0)+q0(x)*cos(x0))
240          *              cos(x0) = cos(x)cos(pi/4)+sin(x)sin(pi/4)
241          *                      =  1/sqrt(2) * (sin(x) + cos(x))
242          *              sin(x0) = sin(x)cos(3pi/4)-cos(x)sin(3pi/4)
243          *                      =  1/sqrt(2) * (sin(x) - cos(x))
245          *              sin(x) +- cos(x) = -cos(2x)/(sin(x) -+ cos(x))
249                 c = cos(x);
257                     z = -cos(x+x);