98             for (int k = 0; k < 9; k++)  in compute_lpc_coeffs()  local
99                 c[k][s] = dot(xs, xs + k, (xe - xs) - k);  in compute_lpc_coeffs()
105         for (int k = 1; k < 9; k++)  in compute_lpc_coeffs()  local
106             r[f][k] = e0 == 0 || e1 == 0 || e2 == 0 ? 0 :  in compute_lpc_coeffs()
107                 (c[k][0]/e0 + c[k][1]/e1 + c[k][2]/e2) * lag_window[k];  in compute_lpc_coeffs()
119         for (int k = 1; k < 9; ) {  in compute_lpc_coeffs()  local
121             rc = -r[f][k];  in compute_lpc_coeffs()
122             for (int i = 1; i < k; i++)  in compute_lpc_coeffs()
123                 rc -= a0[i] * r[f][k-i];  in compute_lpc_coeffs()
128             for (int i = 1; i < k; i++)  in compute_lpc_coeffs()
129                 a1[i] = a0[i] + rc * a0[k-i];  in compute_lpc_coeffs()
130             a1[k++] = rc;  in compute_lpc_coeffs()
132             rc = -r[f][k];  in compute_lpc_coeffs()
133             for (int i = 1; i < k; i++)  in compute_lpc_coeffs()
134                 rc -= a1[i] * r[f][k-i];  in compute_lpc_coeffs()
139             for (int i = 1; i < k; i++)  in compute_lpc_coeffs()
140                 a0[i] = a1[i] + rc * a1[k-i];  in compute_lpc_coeffs()
141             a0[k++] = rc;  in compute_lpc_coeffs()
177     for (int k = 6; k > 0; k--) {  in lpc_reflection()  local
178         b0 = b1, b1 = b[k & 1];  in lpc_reflection()
180         rc[k] = b0[k];  in lpc_reflection()
181         e = 1 - rc[k] * rc[k];  in lpc_reflection()
183         for (int i = 0; i < k; i++)  in lpc_reflection()
184             b1[i] = (b0[i] - rc[k] * b0[k-1-i]) / e;  in lpc_reflection()
277             for (int k = 0; k < rc_order[f]; k++) {  in forward_filtering()  local
278                 s0 = s[k];  in forward_filtering()
279                 s[k] = s1;  in forward_filtering()
281                 s1  = rc[f][k] * xi + s0;  in forward_filtering()
282                 xi += rc[f][k] * s0;  in forward_filtering()
318             for (int k = 6; k >= 0; k--) {  in inverse_filtering()  local
319                 xi -= s[k] * rc[f][k];  in inverse_filtering()
320                 s[k+1] = s[k] + rc[f][k] * xi;  in inverse_filtering()
326         for (int k = 7; k >= rc_order[f]; k--)  in inverse_filtering()  local
327             s[k] = 0;  in inverse_filtering()