function assert_array_approx_equals(actual, expected, epsilon) {
for (var i = 0; i < actual.length; i++) {
assert_approx_equals(actual[i], expected[i], epsilon);
}
}
/**
* Compares two instances of DOMMatrix.
*/
function assert_matrix_approx_equals(actual, expected, epsilon) {
assert_array_approx_equals(
actual.toFloat64Array(), expected.toFloat64Array(), epsilon);
}