uint8_t k_i;
int32_t k_r[5];
int32_t *k_rt[16];
/*
k_r, k_r + 1,
k_r, k_r +   2,
k_r, k_r + 1,
k_r, k_r +     3,
k_r, k_r + 1,
k_r, k_r +   2,
k_r, k_r + 1,
k_r, k_r +       4
*/
int32_t rt0, rt1, rt2, rt3, acc = 0;

for (int i = 0; i < 16; i += 2) {
  k_rt[i] = k_r;
}
for (int i = 1; i < 16; i += 4) {
  k_rt[i] = k_r + 1;
}
for (int i = 3; i < 16; i += 8) {
  k_rt[i] = k_r + 2;
}
k_rt[7] = k_r + 3;
k_rt[15] = k_r + 4;
for (uint8_t i = 0; i < 5; i++) {
  k_r[i] = 0;
}
rt0 = rt1 = rt2 = rt3 = acc = 0;

acc -= rt0;
{ outlet_out[0] = acc += rt0 = inlet_in[0] >> 3; }
acc -= rt1;
{ outlet_out[1] = acc += rt1 = inlet_in[1] >> 3; }
acc -= rt0;
{ outlet_out[2] = acc += rt0 = inlet_in[2] >> 3; }
acc -= rt2;
{ outlet_out[3] = acc += rt2 = inlet_in[3] >> 3; }
acc -= rt0;
{ outlet_out[4] = acc += rt0 = inlet_in[4] >> 3; }
acc -= rt1;
{ outlet_out[5] = acc += rt1 = inlet_in[5] >> 3; }
acc -= rt0;
{ outlet_out[6] = acc += rt0 = inlet_in[6] >> 3; }
acc -= rt3;
{ outlet_out[7] = acc += rt3 = inlet_in[7] >> 3; }
acc -= rt0;
{ outlet_out[8] = acc += rt0 = inlet_in[8] >> 3; }
acc -= rt1;
{ outlet_out[9] = acc += rt1 = inlet_in[9] >> 3; }
acc -= rt0;
{ outlet_out[10] = acc += rt0 = inlet_in[10] >> 3; }
acc -= rt2;
{ outlet_out[11] = acc += rt2 = inlet_in[11] >> 3; }
acc -= rt0;
{ outlet_out[12] = acc += rt0 = inlet_in[12] >> 3; }
acc -= rt1;
{ outlet_out[13] = acc += rt1 = inlet_in[13] >> 3; }
acc -= rt0;
{ outlet_out[14] = acc += rt0 = inlet_in[14] >> 3; }
acc -= *k_rt[k_i];
outlet_out[15] = acc += *k_rt[k_i] = inlet_in[15] >> 3;

k_i++;
k_i &= 15;