190   p->b0 = p->b1 = p->b2 = p->a1 = p->a2 = 0;  in start()
218       p->b0 =  (1 - cos(w0))/2;  in start()
227       p->b0 =  (1 + cos(w0))/2;  in start()
236       p->b0 =   sin(w0)/2;  in start()
245       p->b0 =   alpha;  in start()
254       p->b0 =   1;  in start()
263       p->b0 =   1 - alpha;  in start()
274       p->b0 =   1 + alpha*A;  in start()
285       p->b0 =    A*( (A+1) - (A-1)*cos(w0) + 2*sqrt(A)*alpha );  in start()
298       p->b0 =    A*( (A+1) + (A-1)*cos(w0) + 2*sqrt(A)*alpha );  in start()
308       p->b0 = 1 + p->a1;  in start()
313       p->b0 = (1 - p->a1)/2;  in start()
314       p->b1 = -p->b0;  in start()
329       p->b0 = exp(-w0);  in start()
335       p->b0 = 1 - sin(w0);  in start()
347         make_poly_from_roots(zeros, (size_t)2, &p->b0);  in start()
353         make_poly_from_roots(zeros, (size_t)2, &p->b0);  in start()
359         make_poly_from_roots(zeros, (size_t)2, &p->b0);  in start()
365         make_poly_from_roots(zeros, (size_t)2, &p->b0);  in start()
371         make_poly_from_roots(zeros, (size_t)2, &p->b0);  in start()
380         double b_re = p->b0 + p->b1 * cos(-y) + p->b2 * cos(-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()