41   typedef Matrix<Scalar,Dynamic,Dynamic> DenseMatrix;  in sparse_product()  typedef
52     DenseMatrix refMat2  = DenseMatrix::Zero(rows, depth);  in sparse_product()
53     DenseMatrix refMat2t = DenseMatrix::Zero(depth, rows);  in sparse_product()
54     DenseMatrix refMat3  = DenseMatrix::Zero(depth, cols);  in sparse_product()
55     DenseMatrix refMat3t = DenseMatrix::Zero(cols, depth);  in sparse_product()
56     DenseMatrix refMat4  = DenseMatrix::Zero(rows, cols);  in sparse_product()
57     DenseMatrix refMat4t = DenseMatrix::Zero(cols, rows);  in sparse_product()
58     DenseMatrix refMat5  = DenseMatrix::Random(depth, cols);  in sparse_product()
59     DenseMatrix refMat6  = DenseMatrix::Random(rows, rows);  in sparse_product()
60     DenseMatrix dm4 = DenseMatrix::Zero(rows, rows);  in sparse_product()
107       DenseMatrix Ad(2,2);  in sparse_product()
172       DenseMatrix dm5  = DenseMatrix::Random(depth, cols);  in sparse_product()
227     DenseMatrix refM2 = DenseMatrix::Zero(rows, cols);  in sparse_product()
228     DenseMatrix refM3 = DenseMatrix::Zero(rows, cols);  in sparse_product()
229     DenseMatrix d3 = DenseMatrix::Zero(rows, cols);  in sparse_product()
264     DenseMatrix b = DenseMatrix::Random(rows, rows);  in sparse_product()
265     DenseMatrix x = DenseMatrix::Random(rows, rows);  in sparse_product()
266     DenseMatrix refX = DenseMatrix::Random(rows, rows);  in sparse_product()
267     DenseMatrix refUp = DenseMatrix::Zero(rows, rows);  in sparse_product()
268     DenseMatrix refLo = DenseMatrix::Zero(rows, rows);  in sparse_product()
269     DenseMatrix refS = DenseMatrix::Zero(rows, rows);  in sparse_product()
270     DenseMatrix refA = DenseMatrix::Zero(rows, rows);  in sparse_product()