Lines Matching defs:qx
52 * For better accuracy when x > 0.3, let qx = |x|/4 with
53 * the last 32 bits mask off, and if x > 0.78125, let qx = 0.28125.
55 * cos(x+y) = (1-qx) - ((x*x/2-qx) - (r-x*y)).
56 * Note that 1-qx and (x*x/2-qx) is EXACT here, and the
83 double a,hz,z,r,qx;
95 qx = 0.28125;
97 __HI(qx) = ix-0x00200000; /* x/4 */
98 __LO(qx) = 0;
100 hz = 0.5*z-qx;
101 a = one-qx;