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Fixes the Lvalue computation by actually setting the LvalueBit properly when instantiating tensors of const T. Added a test to check the fix.

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This commit is contained in:
Benoit Steiner 2015-03-16 13:05:00 -07:00
parent 35c3a8bb84
commit f218c0181d
2 changed files with 44 additions and 4 deletions
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8
unsupported/Eigen/CXX11/src/Tensor/TensorTraits.h
View File

@ -54,7 +54,7 @@ struct traits<Tensor<Scalar_, NumIndices_, Options_> >
static const int Layout = Options_ & RowMajor ? RowMajor : ColMajor;
enum {
Options = Options_,
Flags = compute_tensor_flags<Scalar_, Options_>::ret | LvalueBit,
Flags = compute_tensor_flags<Scalar_, Options_>::ret | (is_const<Scalar_>::value ? 0 : LvalueBit),
};
};
@ -69,7 +69,7 @@ struct traits<TensorFixedSize<Scalar_, Dimensions, Options_> >
static const int Layout = Options_ & RowMajor ? RowMajor : ColMajor;
enum {
Options = Options_,
Flags = compute_tensor_flags<Scalar_, Options_>::ret | LvalueBit,
Flags = compute_tensor_flags<Scalar_, Options_>::ret | (is_const<Scalar_>::value ? 0: LvalueBit),
};
};
@ -86,7 +86,7 @@ struct traits<TensorMap<PlainObjectType, Options_> >
static const int Layout = BaseTraits::Layout;
enum {
Options = Options_,
Flags = ((BaseTraits::Flags | LvalueBit) & ~AlignedBit) | (Options&Aligned ? AlignedBit : 0),
Flags = (BaseTraits::Flags & ~AlignedBit) | (Options&Aligned ? AlignedBit : 0),
};
};
@ -102,7 +102,7 @@ struct traits<TensorRef<PlainObjectType> >
static const int Layout = BaseTraits::Layout;
enum {
Options = BaseTraits::Options,
Flags = ((BaseTraits::Flags | LvalueBit) & ~AlignedBit) | (Options&Aligned ? AlignedBit : 0),
Flags = (BaseTraits::Flags & ~AlignedBit) | (Options&Aligned ? AlignedBit : 0),
};
};

40
unsupported/test/cxx11_tensor_ref.cpp
View File

@ -196,6 +196,45 @@ static void test_coeff_ref()
}
static void test_nested_ops_with_ref()
{
Tensor<float, 4> t(2, 3, 5, 7);
t.setRandom();
TensorMap<Tensor<const float, 4> > m(t.data(), 2, 3, 5, 7);
array<pair<ptrdiff_t, ptrdiff_t>, 4> paddings;
paddings[0] = make_pair(0, 0);
paddings[1] = make_pair(2, 1);
paddings[2] = make_pair(3, 4);
paddings[3] = make_pair(0, 0);
Eigen::DSizes<Eigen::DenseIndex, 4> shuffle_dims{0, 1, 2, 3};
TensorRef<Tensor<const float, 4> > ref(m.pad(paddings));
array<pair<ptrdiff_t, ptrdiff_t>, 4> trivial;
trivial[0] = make_pair(0, 0);
trivial[1] = make_pair(0, 0);
trivial[2] = make_pair(0, 0);
trivial[3] = make_pair(0, 0);
Tensor<float, 4> padded = ref.shuffle(shuffle_dims).pad(trivial);
VERIFY_IS_EQUAL(padded.dimension(0), 2+0);
VERIFY_IS_EQUAL(padded.dimension(1), 3+3);
VERIFY_IS_EQUAL(padded.dimension(2), 5+7);
VERIFY_IS_EQUAL(padded.dimension(3), 7+0);
for (int i = 0; i < 2; ++i) {
for (int j = 0; j < 6; ++j) {
for (int k = 0; k < 12; ++k) {
for (int l = 0; l < 7; ++l) {
if (j >= 2 && j < 5 && k >= 3 && k < 8) {
VERIFY_IS_EQUAL(padded(i,j,k,l), t(i,j-2,k-3,l));
} else {
VERIFY_IS_EQUAL(padded(i,j,k,l), 0.0f);
}
}
}
}
}
}
void test_cxx11_tensor_ref()
{
CALL_SUBTEST(test_simple_lvalue_ref());
@ -205,4 +244,5 @@ void test_cxx11_tensor_ref()
CALL_SUBTEST(test_ref_of_ref());
CALL_SUBTEST(test_ref_in_expr());
CALL_SUBTEST(test_coeff_ref());
CALL_SUBTEST(test_nested_ops_with_ref());
}