190   p->b0 = p->b1 = p->b2 = p->a1 = p->a2 = 0;  in start()
219       p->b1 =   1 - cos(w0);  in start()
228       p->b1 = -(1 + cos(w0));  in start()
237       p->b1 =   0;  in start()
246       p->b1 =   0;  in start()
255       p->b1 =  -2*cos(w0);  in start()
264       p->b1 =  -2*cos(w0);  in start()
275       p->b1 =  -2*cos(w0);  in start()
286       p->b1 =  2*A*( (A-1) - (A+1)*cos(w0)                   );  in start()
299       p->b1 = -2*A*( (A-1) + (A+1)*cos(w0)                   );  in start()
314       p->b1 = -p->b0;  in start()
330       p->b1 = -1;  in start()
336       p->b1 = -2 * cos(w0);  in start()
380         double b_re = p->b0 + p->b1 * cos(-y) + p->b2 * cos(-2 * y);  in start()
382         double b_im = p->b1 * sin(-y) + p->b2 * sin(-2 * y);  in start()
385         p->b0 *= g; p->b1 *= g; p->b2 *= g;  in start()
387       mult = (p->b0 + p->b1 + p->b2) / (p->a0 + p->a1 + p->a2);  in start()