def test_ihfftn(self):
x = random((30, 20, 10))
expect = fft.ifftn(x)[:, :, :6]
assert_array_almost_equal(expect, fft.ihfftn(x))
assert_array_almost_equal(expect, fft.ihfftn(x, norm="backward"))
assert_array_almost_equal(expect * np.sqrt(30 * 20 * 10),
fft.ihfftn(x, norm="ortho"))
assert_array_almost_equal(expect * (30 * 20 * 10),
fft.ihfftn(x, norm="forward"))
def test_ihfftn(self):
x = random((30, 20, 10))
assert_array_almost_equal(fft.ifftn(x)[:, :, :6], fft.ihfftn(x))
assert_array_almost_equal(fft.ihfftn(x) * np.sqrt(30 * 20 * 10),
fft.ihfftn(x, norm="ortho"))
def test_hfftn(self):
x = random((30, 20, 10))
assert_array_almost_equal(x, fft.hfftn(fft.ihfftn(x)))
assert_array_almost_equal(
x, fft.hfftn(fft.ihfftn(x, norm="ortho"), norm="ortho"))
def test_hfftn(self):
x = random((30, 20, 10))
assert_array_almost_equal(x, fft.hfftn(fft.ihfftn(x)))
for norm in ["backward", "ortho", "forward"]:
assert_array_almost_equal(
x, fft.hfftn(fft.ihfftn(x, norm=norm), norm=norm))