public double[] getDoublePivot () {
      double[] vals = new double[m];
      for (int i = 0; i < m; i++) {
         vals[i] = (double) piv[i];
      }
      return vals;
   }
public double [ ] getDoublePivot ( ) { double [ ] vals = new double [ m ] ; for ( int i = 0 ; i < m ; i ++ ) { vals [ i ] = ( double ) piv [ i ] ; } return vals ; }
Return pivot permutation vector as a one-dimensional double array
@return     (double) piv