uint32_t env;
uint32_t count;
uint32_t timer;
int gtrig;
int stage;
int32_t goal;
int strig;
uint32_t rate;
int32_t level;
int32_t prevlevel;
int otrig;

level = 0;
stage = 3;
otrig = 0;

if ((inlet_gate > 0) && !gtrig) {
  gtrig = 1;
  env = 0;
  stage = 1;
  goal = (1 << 27);
  prevlevel = level;
} else if (!(inlet_gate > 0)) {
  gtrig = 0;
}

if ((inlet_gate == 0) && !otrig) {
  otrig = 1;
  prevlevel = level;
  goal = 0;
  stage = 0;
  env = 0;
} else if (inlet_gate > 0) {
  otrig = 0;
}
if ((level == 0) && (stage == 0)) {
  stage = 3;
}

if (stage == 1) {
  rate = timer * param_division / param_A;
  env += rate;
  level = ___SMMUL(env >> 1, goal - prevlevel << 1) + prevlevel;
  if (param_A == 0) {
    stage = 2;
    env = 0;
    goal = param_S;
    prevlevel = level = (1 << 27);
  } else if (((env >> 2) + (rate >> 2)) >= (1 << 30) - 1) {
    stage = 2;
    env = 0;
    goal = param_S;
    prevlevel = level;
  }
}

if (stage == 2) {
  rate = timer * param_division / param_D;
  env += rate;
  level = ___SMMUL(env >> 1, goal - prevlevel << 1) + prevlevel;
  if (param_D == 0) {
    stage = 3;
    env = 0;
    goal = 0;
    prevlevel = level;
  } else if (((env >> 2) + (rate >> 2)) >= (1 << 30) - 1) {
    stage = 3;
    prevlevel = level;
    env = 0;
    goal = 0;
  }
}

if (stage == 0) {
  if (param_R == 0) {
    stage = 3;
    level = 0;
    prevlevel = level;
    env = 0;
  } else {
    rate = timer * param_division / param_R;
    env += rate;
    level = ___SMMUL(env >> 1, goal - prevlevel << 1) + prevlevel;
    if (((env >> 2) + (rate >> 2)) > (1 << 30) - 1) {
      stage = 3;
      level = 0;
      prevlevel = level;
      env = 0;
    }
  }
}

outlet_out = level;
outlet_stage = stage;

if ((inlet_sync > 0) && !strig) {
  strig = 1;
  timer = ((1 << 31) / (count)) << 4;
  count = 0;
} else if (!(inlet_sync > 0)) {
  strig = 0;
}
count += 1;