Lines Matching defs:alpha
80 "Bits in EMA's alpha.");
211 /* Exp Moving Average, alpha = 1 / (1 << alpha_bits) */
241 int alpha;
541 clp->alpha = 20; /* Alpha == gain. 20 = .2 */
583 * is why we use a relatively low alpha of between .1 and .25 to
598 (100 + clp->alpha) / 100; /* Scale up */
601 (100 - clp->alpha) / 100; /* Scale down */
928 OID_AUTO, "alpha", CTLFLAG_RW,
929 &clp->alpha, 0,
1488 * Classic expoentially decaying average with a tiny alpha
1492 * ema_t = y_t * alpha + ema_t-1 * (1 - alpha)
1493 * alpha = 1 / (1 << alpha_bits)
1495 * Since alpha is a power of two, we can compute this w/o any mult or
1513 * N ~ 2 / alpha - 1
1514 * alpha < 1 / 16 (typically much less)