Lines Matching refs:z
33 * For |x| < pi/4, let z = x * x, and approximate sin(x) by
35 * S(x) = x(S0 + S1*z)(S2 + S3*z + z*z)
45 * C(x) = (C0 + C1*z + C2*z*z) * (C3 + C4*z + z*z)
98 double y, z, w;
119 z = y * y;
120 *s = (float)((y * (S0 + z * S1)) *
121 (S2 + z * (S3 + z)));
122 *c = (float)(((C0 + z * C1) + (z * z) * C2) *
123 (C3 + z * (C4 + z)));
126 z = y * y;
127 *s = (float)(((C0 + z * C1) + (z * z) * C2) *
128 (C3 + z * (C4 + z)));
129 *c = (float)-((y * (S0 + z * S1)) *
130 (S2 + z * (S3 + z)));
133 z = y * y;
134 *s = (float)-(((C0 + z * C1) + (z * z) * C2) *
135 (C3 + z * (C4 + z)));
136 *c = (float)((y * (S0 + z * S1)) *
137 (S2 + z * (S3 + z)));
172 z = y * y;
173 f = (float)((y * (S0 + z * S1)) * (S2 + z * (S3 + z)));
174 g = (float)(((C0 + z * C1) + (z * z) * C2) *
175 (C3 + z * (C4 + z)));