def check_arctanh(): x = create_input_for_trigonometric_ops( [-1 / 4, -1 / 2, 0, 1 / 4, 1 / 2]) y = nd.arctanh(x) # expected ouput for indices=(0, 1, -3, -2, -1) after applying arctanh() expected_output = [ np.arctanh(-1 / 4), np.arctanh(-1 / 2), 0, np.arctanh(1 / 4), np.arctanh(1 / 2) ] assert_correctness_of_trigonometric_ops(y, expected_output)
def arctanh(x): return nd.arctanh(x)