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Fixed a bug when chipping tensors laid out in row major order.

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This commit is contained in:
Benoit Steiner 2015-04-07 10:44:13 -07:00
parent a1f1e1e51d
commit 1de49ef4c2
2 changed files with 45 additions and 13 deletions
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6
unsupported/Eigen/CXX11/src/Tensor/TensorChipping.h
View File

@ -157,6 +157,8 @@ struct TensorEvaluator<const TensorChippingOp<DimId, ArgType>, Device>
eigen_assert(NumInputDims > m_dim.actualDim());
const typename TensorEvaluator<ArgType, Device>::Dimensions& input_dims = m_impl.dimensions();
eigen_assert(op.offset() < input_dims[m_dim.actualDim()]);
int j = 0;
for (int i = 0; i < NumInputDims; ++i) {
if (i != m_dim.actualDim()) {
@ -246,7 +248,9 @@ struct TensorEvaluator<const TensorChippingOp<DimId, ArgType>, Device>
EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE Scalar* data() const {
Scalar* result = m_impl.data();
if (m_dim.actualDim() == NumDims && result) {
if (((static_cast<int>(Layout) == static_cast<int>(ColMajor) && m_dim.actualDim() == NumDims) ||
(static_cast<int>(Layout) == static_cast<int>(RowMajor) && m_dim.actualDim() == 0)) &&
result) {
return result + m_inputOffset;
} else {
return NULL;

52
unsupported/test/cxx11_tensor_chipping.cpp
View File

@ -340,11 +340,9 @@ static void test_chip_as_lvalue()
}
}
template<int DataLayout>
static void test_chip_raw_data()
static void test_chip_raw_data_col_major()
{
Tensor<float, 5, DataLayout> tensor(2,3,5,7,11);
Tensor<float, 5, ColMajor> tensor(2,3,5,7,11);
tensor.setRandom();
typedef TensorEvaluator<decltype(tensor.template chip<4>(3)), DefaultDevice> Evaluator4;
@ -353,12 +351,7 @@ static void test_chip_raw_data()
for (int j = 0; j < 3; ++j) {
for (int k = 0; k < 5; ++k) {
for (int l = 0; l < 7; ++l) {
int chip_index;
if (DataLayout == ColMajor) {
chip_index = i + 2 * (j + 3 * (k + 5 * l));
} else {
chip_index = 11 * (l + 7 * (k + 5 * (j + 3 * i)));
}
int chip_index = i + 2 * (j + 3 * (k + 5 * l));
VERIFY_IS_EQUAL(chip.data()[chip_index], tensor(i,j,k,l,3));
}
}
@ -382,6 +375,41 @@ static void test_chip_raw_data()
VERIFY_IS_EQUAL(chip3.data(), static_cast<float*>(0));
}
static void test_chip_raw_data_row_major()
{
Tensor<float, 5, RowMajor> tensor(11,7,5,3,2);
tensor.setRandom();
typedef TensorEvaluator<decltype(tensor.template chip<0>(3)), DefaultDevice> Evaluator0;
auto chip = Evaluator0(tensor.template chip<0>(3), DefaultDevice());
for (int i = 0; i < 7; ++i) {
for (int j = 0; j < 5; ++j) {
for (int k = 0; k < 3; ++k) {
for (int l = 0; l < 2; ++l) {
int chip_index = l + 2 * (k + 3 * (j + 5 * i));
VERIFY_IS_EQUAL(chip.data()[chip_index], tensor(3,i,j,k,l));
}
}
}
}
typedef TensorEvaluator<decltype(tensor.template chip<1>(0)), DefaultDevice> Evaluator1;
auto chip1 = Evaluator1(tensor.template chip<1>(0), DefaultDevice());
VERIFY_IS_EQUAL(chip1.data(), static_cast<float*>(0));
typedef TensorEvaluator<decltype(tensor.template chip<2>(0)), DefaultDevice> Evaluator2;
auto chip2 = Evaluator2(tensor.template chip<2>(0), DefaultDevice());
VERIFY_IS_EQUAL(chip2.data(), static_cast<float*>(0));
typedef TensorEvaluator<decltype(tensor.template chip<3>(0)), DefaultDevice> Evaluator3;
auto chip3 = Evaluator3(tensor.template chip<3>(0), DefaultDevice());
VERIFY_IS_EQUAL(chip3.data(), static_cast<float*>(0));
typedef TensorEvaluator<decltype(tensor.template chip<4>(0)), DefaultDevice> Evaluator4;
auto chip4 = Evaluator4(tensor.template chip<4>(0), DefaultDevice());
VERIFY_IS_EQUAL(chip4.data(), static_cast<float*>(0));
}
void test_cxx11_tensor_chipping()
{
CALL_SUBTEST(test_simple_chip<ColMajor>());
@ -392,6 +420,6 @@ void test_cxx11_tensor_chipping()
CALL_SUBTEST(test_chip_in_expr<RowMajor>());
CALL_SUBTEST(test_chip_as_lvalue<ColMajor>());
CALL_SUBTEST(test_chip_as_lvalue<RowMajor>());
CALL_SUBTEST(test_chip_raw_data<ColMajor>());
CALL_SUBTEST(test_chip_raw_data<RowMajor>());
CALL_SUBTEST(test_chip_raw_data_col_major());
CALL_SUBTEST(test_chip_raw_data_row_major());
}