Lines Matching defs:sy
56 1.41... > sg >= 0.70.., 0.70.. >= sy > 0.35... .
63 double sy; /* Estimate of 1/2g (overestimated by 1ulp). */
64 double sy2; /* 2*sy */
81 sy = t_sqrt[1];
88 sy2 = sy + sy;
89 sg = sy*sd + sg; /* 16-bit approximation to sqrt(sx). */
91 e = -(sy*sg - almost_half);
95 sy = sy + e*sy2;
96 sg = sg + sy*sd; /* 32-bit approximation to sqrt(sx). */
97 sy2 = sy + sy;
98 e = -(sy*sg - almost_half);
100 sy = sy + e*sy2;
102 sg = sg + sy*sd; /* 64-bit approximation to sqrt(sx),
104 sy2 = sy + sy;
106 e = -(sy*sg - almost_half);
108 sy = sy + e*sy2;
110 return g + sy*d;