Lines Matching full:y
14 /* __kernel_tan( x, y, k )
17 * Input y is the tail of x.
34 * Note: tan(x+y) = tan(x) + tan'(x)*y
35 * ~ tan(x) + (1+x*x)*y
36 * Therefore, for better accuracy in computing tan(x+y), let
41 * tan(x+y) = x + (T1*x + (x *(r+y)+y))
43 * 4. For x in [0.67434,pi/4], let y = pi/4 - x, then
44 * tan(x) = tan(pi/4-y) = (1-tan(y))/(1+tan(y))
45 * = 1 - 2*(tan(y) - (tan(y)^2)/(1+tan(y)))
73 __kernel_tan(__float64 x, __float64 y, int iy) in __kernel_tan() argument
90 z = w = x + y; in __kernel_tan()
92 v = y - (z - x); in __kernel_tan()
104 y = -y; in __kernel_tan()
107 w = pio4lo - y; in __kernel_tan()
109 y = _F_64(0.0); in __kernel_tan()
121 r = y + z * (s * (r + v) + y); in __kernel_tan()