AcadEx: Updatelabels Function - ITA

int updatelabels() {
  int check=0, i;
  int right, over, left, under, site;
  for(i=0;i<L*L;i++){
    site = label[i];
    if(site != EMPTY ) {
      /*controllo il vicino di destra*/
      right = label[(i+1)%L+(int)(i/L)*L];
      if( right != EMPTY && site != right) {
    if( site > right ) label[i] = label[(i+1)%L+(int)(i/L)*L];
    else label[(i+1)%L+(int)(i/L)*L] = label[i];
    check=1;
      }
      /*conrollo il vicino di sopra*/
      if( ((int)(i/L)) != L-1 ) {
    over=label[i+L];
    if( over != EMPTY && site != over) {
      if( site > over ) label[i] = label[i+1];
      else label[i+1] = label[i];
      check=1;
    }
      }
      /*sinistra*/
      left = label[(i-1)%L+(int)(i/L)*L];
      if( left != EMPTY && site != left) {
    if( site > left ) label[i] = label[(i-1)%L+(int)(i/L)*L];
    else label[(i-1)%L+(int)(i/L)*L] = label[i];
    check=1;
      }
      /*sotto*/
      if( ((int)(i/L)) != 0 ) {
    under = label[i-L];
    if( under != EMPTY && site != under) {
      if( site > under ) label[i] = label[i-1];
      else label[i-1] = label[i];
      check=1;
    }
      }
    }
  }
return check;
}