public ComputeStage(int D, int N, float W_re[], float W_im[])
public ComputeStage(int D, int N, float W_re3a[], float W_im3a[])
  public ComputeStage(int D, int N, float W_re[], float W_im[])   {     super(D, N, W_re, W_im);   } 