Lines Matching defs:atan
16 /* atan(x)
18 * 1. Reduce x to positive by atan(x) = -atan(-x).
23 * [0,7/16] atan(x) = t-t^3*(a1+t^2*(a2+...(a10+t^2*a11)...)
24 * [7/16,11/16] atan(x) = atan(1/2) + atan( (t-0.5)/(1+t/2) )
25 * [11/16.19/16] atan(x) = atan( 1 ) + atan( (t-1)/(1+t) )
26 * [19/16,39/16] atan(x) = atan(3/2) + atan( (t-1.5)/(1+1.5t) )
27 * [39/16,INF] atan(x) = atan(INF) + atan( -1/t )
42 4.63647609000806093515e-01, /* atan(0.5)hi 0x3FDDAC67, 0x0561BB4F */
43 7.85398163397448278999e-01, /* atan(1.0)hi 0x3FE921FB, 0x54442D18 */
44 9.82793723247329054082e-01, /* atan(1.5)hi 0x3FEF730B, 0xD281F69B */
45 1.57079632679489655800e+00, /* atan(inf)hi 0x3FF921FB, 0x54442D18 */
49 2.26987774529616870924e-17, /* atan(0.5)lo 0x3C7A2B7F, 0x222F65E2 */
50 3.06161699786838301793e-17, /* atan(1.0)lo 0x3C81A626, 0x33145C07 */
51 1.39033110312309984516e-17, /* atan(1.5)lo 0x3C700788, 0x7AF0CBBD */
52 6.12323399573676603587e-17, /* atan(inf)lo 0x3C91A626, 0x33145C07 */
74 atan(double x)
123 __weak_reference(atan, atanl);