250     MatrixXd mat1(6,6), mat2(6,6);  in EIGEN_DECLARE_TEST()  local
251     VERIFY_IS_APPROX_EVALUATOR(mat1, MatrixXd::Identity(6,6));  in EIGEN_DECLARE_TEST()
252     VERIFY_IS_APPROX_EVALUATOR(mat2, mat1);  in EIGEN_DECLARE_TEST()
253     copy_using_evaluator(mat2.transpose(), mat1);  in EIGEN_DECLARE_TEST()
254     VERIFY_IS_APPROX(mat2.transpose(), mat1);  in EIGEN_DECLARE_TEST()
262     VERIFY_IS_APPROX_EVALUATOR(mat2, mat1);  in EIGEN_DECLARE_TEST()
332     mat1.setRandom();  in EIGEN_DECLARE_TEST()
335     copy_using_evaluator(matXcd.real(), mat1);  in EIGEN_DECLARE_TEST()
337     matXcd_ref.real() = mat1;  in EIGEN_DECLARE_TEST()
355     VERIFY_IS_APPROX_EVALUATOR(vec1, mat1.rowwise().sum());  in EIGEN_DECLARE_TEST()
356     VERIFY_IS_APPROX_EVALUATOR(vec1, mat1.colwise().sum().transpose());  in EIGEN_DECLARE_TEST()
359     mat1.setRandom(6,6);  in EIGEN_DECLARE_TEST()
362     VERIFY_IS_APPROX_EVALUATOR(arr2, mat1.array());  in EIGEN_DECLARE_TEST()
364     VERIFY_IS_APPROX_EVALUATOR(arr2, mat1.array() + 2);  in EIGEN_DECLARE_TEST()
376     mat2.array() = mat1.array().reverse();  in EIGEN_DECLARE_TEST()
377     VERIFY_IS_APPROX(mat2.array(), mat1.array().reverse());  in EIGEN_DECLARE_TEST()
380     VERIFY_IS_APPROX_EVALUATOR(vec1, mat1.diagonal());  in EIGEN_DECLARE_TEST()
382     VERIFY_IS_APPROX_EVALUATOR(vec1, mat1.diagonal(1));  in EIGEN_DECLARE_TEST()
383     VERIFY_IS_APPROX_EVALUATOR(vec1, mat1.diagonal<-1>());  in EIGEN_DECLARE_TEST()
386     mat2 = mat1;  in EIGEN_DECLARE_TEST()
387     copy_using_evaluator(mat1.diagonal(1), vec1);  in EIGEN_DECLARE_TEST()
389     VERIFY_IS_APPROX(mat1, mat2);  in EIGEN_DECLARE_TEST()
391     copy_using_evaluator(mat1.diagonal<-1>(), mat1.diagonal(1));  in EIGEN_DECLARE_TEST()
393     VERIFY_IS_APPROX(mat1, mat2);  in EIGEN_DECLARE_TEST()
398     MatrixXd mat1, mat2, mat1ref, mat2ref;  in EIGEN_DECLARE_TEST()  local
399     mat1ref = mat1 = MatrixXd::Random(6, 6);  in EIGEN_DECLARE_TEST()
400     mat2ref = mat2 = 2 * mat1 + MatrixXd::Identity(6, 6);  in EIGEN_DECLARE_TEST()
401     swap_using_evaluator(mat1, mat2);  in EIGEN_DECLARE_TEST()
403     VERIFY_IS_APPROX(mat1, mat1ref);  in EIGEN_DECLARE_TEST()
406     swap_using_evaluator(mat1.block(0, 0, 3, 3), mat2.block(3, 3, 3, 3));  in EIGEN_DECLARE_TEST()
408     VERIFY_IS_APPROX(mat1, mat1ref);  in EIGEN_DECLARE_TEST()
411     swap_using_evaluator(mat1.row(2), mat2.col(3).transpose());  in EIGEN_DECLARE_TEST()
412     mat1.row(2).swap(mat2.col(3).transpose());  in EIGEN_DECLARE_TEST()
413     VERIFY_IS_APPROX(mat1, mat1ref);  in EIGEN_DECLARE_TEST()