Lines Matching refs:w2
37 * log2(x) = w1 + w2,
163 double y1, y2, w1, w2;
286 /* first compute log2(ax) = w1+w2, with 24 bits w1 */
287 w1 = log2_x(ax, &w2);
289 /* split up y into y1+y2 and compute (y1+y2)*(w1+w2) */
294 y2 = y * w2;
297 y2 = (y - y1) * w1 + y * w2;
306 w2 = y1 - z;
307 w2 += y2;
309 if (w2 >= -8.008566259537296567160e-17)
317 w2 = y1 - z;
318 w2 += y2;
319 if (w2 <= zero) /* underflow */
329 w2 = _TBL_exp2_hi[j];
330 z = _TBL_exp2_lo[j] + (w2 * w1) * (E1 + w1 * (E2 + w1 * (E3 + w1 *
332 z += w2;