227     DenseMatrix refM2 = DenseMatrix::Zero(rows, cols);  in sparse_product()  local
234     initSparse<Scalar>(density, refM2, m2);  in sparse_product()
236     VERIFY_IS_APPROX(m3=m2*d1, refM3=refM2*d1);  in sparse_product()
237     VERIFY_IS_APPROX(m3=m2.transpose()*d2, refM3=refM2.transpose()*d2);  in sparse_product()
238     VERIFY_IS_APPROX(m3=d2*m2, refM3=d2*refM2);  in sparse_product()
239     VERIFY_IS_APPROX(m3=d1*m2.transpose(), refM3=d1*refM2.transpose());  in sparse_product()
245     VERIFY_IS_APPROX(m3=m2*v1.asDiagonal(), refM3=refM2*v1.asDiagonal());  in sparse_product()
246     VERIFY_IS_APPROX(m3=m2.transpose()*v2.asDiagonal(), refM3=refM2.transpose()*v2.asDiagonal());  in sparse_product()
247     VERIFY_IS_APPROX(m3=v2.asDiagonal()*m2, refM3=v2.asDiagonal()*refM2);  in sparse_product()
248     VERIFY_IS_APPROX(m3=v1.asDiagonal()*m2.transpose(), refM3=v1.asDiagonal()*refM2.transpose());  in sparse_product()
250 …VERIFY_IS_APPROX(m3=v2.asDiagonal()*m2*v1.asDiagonal(), refM3=v2.asDiagonal()*refM2*v1.asDiagonal(…  in sparse_product()
252     VERIFY_IS_APPROX(v2=m2*v1.asDiagonal()*v1, refM2*v1.asDiagonal()*v1);  in sparse_product()
253     VERIFY_IS_APPROX(v3=v2.asDiagonal()*m2*v1, v2.asDiagonal()*refM2*v1);  in sparse_product()
256     VERIFY_IS_APPROX(d3=m2*d1, refM3=refM2*d1);  in sparse_product()
257     VERIFY_IS_APPROX(d3=m2.transpose()*d2, refM3=refM2.transpose()*d2);  in sparse_product()
258     VERIFY_IS_APPROX(d3=d2*m2, refM3=d2*refM2);  in sparse_product()
259     VERIFY_IS_APPROX(d3=d1*m2.transpose(), refM3=d1*refM2.transpose());  in sparse_product()