docs: public static DMatrixRMaj createMatrixV(EigenDecomposition_F64<DMatrixRMaj> eig )
      {
          int N = eig.getNumberOfEigenvalues();
  
          DMatrixRMaj V = new DMatrixRMaj( N , N );
  
          for( int i = 0; i < N; i++ ) {
              Complex_F64 c = eig.getEigenvalue(i);
  
              if( c.isReal() ) {
                  DMatrixRMaj v = eig.getEigenVector(i);
  
                  if( v != null ) {
                      for( int j = 0; j < N; j++ ) {
                          V.set(j,i,v.get(j,0));
                      }
                  }
              }
          }
  
          return V;
      }