int32_t j;
/*
 *  TX81Z algorithms:
 *  1: op4 -> op3 -> op2 -> op1
 *  2: (op4 + op3) -> op2 -> op1
 *  3: op3 -> op2 + op4 -> op1
 *  4: op4 -> op3 + op2 -> op1
 *  5: (op2 -> op1) + (op4 -> op3)
 *  6: (op4 -> op1) + (op4 -> op2) + op4 -> op3)
 *  7: op1 + op2 + (op4 -> op3)
 *  8: op1 + op2 + op3 + op4
 */
switch (param_algorithm) {
case 0:
  // 1: op4 -> op3 -> op2 -> op1
  for (j = 0; j < BUFSIZE; ++j) {
    outlet_op1o[j] = inlet_op2i[j];
    outlet_op2o[j] = inlet_op3i[j];
    outlet_op3o[j] = inlet_op4i[j];
    outlet_op4o[j] = inlet_op4i[j];
    outlet_out[j] = __SSAT(inlet_op1i[j], 28);
  }
  break;
case 1:
  // 2: (op4 + op3) -> op2 -> op1
  for (j = 0; j < BUFSIZE; ++j) {
    outlet_op1o[j] = inlet_op2i[j];
    outlet_op2o[j] = inlet_op3i[j] + inlet_op4i[j];
    outlet_op3o[j] = inlet_op3i[j]; // = 0
    outlet_op4o[j] = inlet_op4i[j];
    outlet_out[j] = __SSAT(inlet_op1i[j], 28);
  }
  break;
case 2:
  // 3: op3 -> op2 + op4 -> op1
  for (j = 0; j < BUFSIZE; ++j) {
    outlet_op1o[j] = inlet_op2i[j] + inlet_op4i[j];
    outlet_op2o[j] = inlet_op3i[j];
    outlet_op3o[j] = inlet_op3i[j]; // = 0
    outlet_op4o[j] = inlet_op4i[j];
    outlet_out[j] = __SSAT(inlet_op1i[j], 28);
  }
  break;
case 3:
  // 4: op4 -> op3 + op2 -> op1
  for (j = 0; j < BUFSIZE; ++j) {
    outlet_op1o[j] = inlet_op2i[j] + inlet_op3i[j];
    outlet_op2o[j] = inlet_op2i[j]; // = 0;
    outlet_op3o[j] = inlet_op4i[j];
    outlet_op4o[j] = inlet_op4i[j];
    outlet_out[j] = __SSAT(inlet_op1i[j], 28);
  }
  break;
case 4:
  // 5: (op2 -> op1) + (op4 -> op3)
  for (j = 0; j < BUFSIZE; ++j) {
    outlet_op1o[j] = inlet_op2i[j];
    outlet_op2o[j] = inlet_op2i[j]; // = 0;
    outlet_op3o[j] = inlet_op4i[j];
    outlet_op4o[j] = inlet_op4i[j];
    outlet_out[j] = __SSAT(inlet_op1i[j] + inlet_op3i[j], 28);
  }
  break;
case 5:
  // 6: (op4 -> op1) + (op4 -> op2) + (op4 -> op3)
  for (j = 0; j < BUFSIZE; ++j) {
    outlet_op1o[j] = inlet_op4i[j];
    outlet_op2o[j] = inlet_op4i[j];
    outlet_op3o[j] = inlet_op4i[j];
    outlet_op4o[j] = inlet_op4i[j];
    outlet_out[j] = __SSAT(inlet_op1i[j] + inlet_op2i[j] + inlet_op3i[j], 28);
  }
  break;
case 6:
  // 7: op1 + op2 + (op4 -> op3)
  for (j = 0; j < BUFSIZE; ++j) {
    outlet_op1o[j] = inlet_op1i[j]; //= 0;
    outlet_op2o[j] = inlet_op2i[j]; //= 0;
    outlet_op3o[j] = inlet_op4i[j];
    outlet_op4o[j] = inlet_op4i[j];
    outlet_out[j] = __SSAT(inlet_op1i[j] + inlet_op2i[j] + inlet_op3i[j], 28);
  }
  break;
case 7:
  // 8: op1 + op2 + op3 + op4
  for (j = 0; j < BUFSIZE; ++j) {
    outlet_op1o[j] = inlet_op1i[j]; // = 0
    outlet_op2o[j] = inlet_op2i[j]; // = 0
    outlet_op3o[j] = inlet_op3i[j]; // = 0
    outlet_op4o[j] = inlet_op4i[j];
    outlet_out[j] = __SSAT(
        inlet_op1i[j] + inlet_op2i[j] + inlet_op3i[j] + inlet_op4i[j], 28);
  }
  break;
}