Method test_exp_strides

numpy/_core/tests/test_umath.py:1511–1523

(self)

            assert_almost_equal(np.exp(yf), xf)

    def test_exp_strides(self):
        np.random.seed(42)
        strides = np.array([-4, -3, -2, -1, 1, 2, 3, 4])
        sizes = np.arange(2, 100)
        for ii in sizes:
            x_f64 = np.float64(np.random.uniform(low=0.01, high=709.1, size=ii))
            y_true = np.exp(x_f64)
            for jj in strides:
                assert_array_almost_equal_nulp(
                    np.exp(x_f64[::jj]),
                    y_true[::jj],
                    nulp=2,
                )

class TestSpecialFloats:
    def test_exp_values(self):