def check_definition(self):
x = [[1, 2, 3], [4, 5, 6], [7, 8, 9]]
y = ifftn(x)
assert_array_almost_equal(y, direct_idftn(x))
x = random((20, 26))
assert_array_almost_equal(ifftn(x), direct_idftn(x))
x = random((5, 4, 3, 20))
assert_array_almost_equal(ifftn(x), direct_idftn(x))
def check_random_complex(self):
for size in [1, 2, 51, 32, 64, 92]:
x = random([size, size]) + 1j * random([size, size])
assert_array_almost_equal(ifftn(fftn(x)), x)
assert_array_almost_equal(fftn(ifftn(x)), x)