def test_advanced_indexing_tensor(output_shape):
# u v
# / \ / \
# i j k
# \ | /
# \ | /
# x
output = reals(*output_shape)
x = random_tensor(
OrderedDict([
('i', bint(2)),
('j', bint(3)),
('k', bint(4)),
]), output)
i = random_tensor(OrderedDict([
('u', bint(5)),
]), bint(2))
j = random_tensor(OrderedDict([
('v', bint(6)),
('u', bint(5)),
]), bint(3))
k = random_tensor(OrderedDict([
('v', bint(6)),
]), bint(4))
expected_data = empty((5, 6) + output_shape)
for u in range(5):
for v in range(6):
expected_data[u, v] = x.data[i.data[u], j.data[v, u], k.data[v]]
expected = Tensor(expected_data,
OrderedDict([
('u', bint(5)),
('v', bint(6)),
]))
assert_equiv(expected, x(i, j, k))
assert_equiv(expected, x(i=i, j=j, k=k))
assert_equiv(expected, x(i=i, j=j)(k=k))
assert_equiv(expected, x(j=j, k=k)(i=i))
assert_equiv(expected, x(k=k, i=i)(j=j))
assert_equiv(expected, x(i=i)(j=j, k=k))
assert_equiv(expected, x(j=j)(k=k, i=i))
assert_equiv(expected, x(k=k)(i=i, j=j))
assert_equiv(expected, x(i=i)(j=j)(k=k))
assert_equiv(expected, x(i=i)(k=k)(j=j))
assert_equiv(expected, x(j=j)(i=i)(k=k))
assert_equiv(expected, x(j=j)(k=k)(i=i))
assert_equiv(expected, x(k=k)(i=i)(j=j))
assert_equiv(expected, x(k=k)(j=j)(i=i))
def test_advanced_indexing_lazy(output_shape):
x = Tensor(randn((2, 3, 4) + output_shape),
OrderedDict([
('i', bint(2)),
('j', bint(3)),
('k', bint(4)),
]))
u = Variable('u', bint(2))
v = Variable('v', bint(3))
with interpretation(lazy):
i = Number(1, 2) - u
j = Number(2, 3) - v
k = u + v
expected_data = empty((2, 3) + output_shape)
i_data = x.materialize(i).data
j_data = x.materialize(j).data
k_data = x.materialize(k).data
for u in range(2):
for v in range(3):
expected_data[u, v] = x.data[i_data[u], j_data[v], k_data[u, v]]
expected = Tensor(expected_data,
OrderedDict([
('u', bint(2)),
('v', bint(3)),
]))
assert_equiv(expected, x(i, j, k))
assert_equiv(expected, x(i=i, j=j, k=k))
assert_equiv(expected, x(i=i, j=j)(k=k))
assert_equiv(expected, x(j=j, k=k)(i=i))
assert_equiv(expected, x(k=k, i=i)(j=j))
assert_equiv(expected, x(i=i)(j=j, k=k))
assert_equiv(expected, x(j=j)(k=k, i=i))
assert_equiv(expected, x(k=k)(i=i, j=j))
assert_equiv(expected, x(i=i)(j=j)(k=k))
assert_equiv(expected, x(i=i)(k=k)(j=j))
assert_equiv(expected, x(j=j)(i=i)(k=k))
assert_equiv(expected, x(j=j)(k=k)(i=i))
assert_equiv(expected, x(k=k)(i=i)(j=j))
assert_equiv(expected, x(k=k)(j=j)(i=i))