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Enabled the construction of a fixed sized tensor directly from an expression.

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This commit is contained in:
Benoit Steiner 2015-07-13 11:16:37 -07:00
parent 3912ca0d53
commit b80036abec
3 changed files with 32 additions and 0 deletions
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2
unsupported/Eigen/CXX11/src/Tensor/TensorBase.h
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@ -492,6 +492,7 @@ class TensorBase<Derived, ReadOnlyAccessors>
protected:
template <typename Scalar, std::size_t NumIndices, int Options, typename IndexType> friend class Tensor;
template <typename Scalar, typename Dimensions, int Option, typename IndexTypes> friend class TensorFixedSize;
template <typename OtherDerived, int AccessLevel> friend class TensorBase;
EIGEN_DEVICE_FUNC
EIGEN_STRONG_INLINE const Derived& derived() const { return *static_cast<const Derived*>(this); }
@ -508,6 +509,7 @@ class TensorBase<Derived, WriteAccessors> : public TensorBase<Derived, ReadOnlyA
static const int NumDimensions = DerivedTraits::NumDimensions;
template <typename Scalar, std::size_t NumIndices, int Options, typename IndexType> friend class Tensor;
template <typename Scalar, typename Dimensions, int Option, typename IndexTypes> friend class TensorFixedSize;
template <typename OtherDerived, int AccessLevel> friend class TensorBase;
EIGEN_DEVICE_FUNC

17
unsupported/Eigen/CXX11/src/Tensor/TensorFixedSize.h
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@ -197,6 +197,23 @@ class TensorFixedSize : public TensorBase<TensorFixedSize<Scalar_, Dimensions_,
}
#endif
template<typename OtherDerived>
EIGEN_DEVICE_FUNC
EIGEN_STRONG_INLINE TensorFixedSize(const TensorBase<OtherDerived, ReadOnlyAccessors>& other)
{
typedef TensorAssignOp<TensorFixedSize, const OtherDerived> Assign;
Assign assign(*this, other.derived());
internal::TensorExecutor<const Assign, DefaultDevice>::run(assign, DefaultDevice());
}
template<typename OtherDerived>
EIGEN_DEVICE_FUNC
EIGEN_STRONG_INLINE TensorFixedSize(const TensorBase<OtherDerived, WriteAccessors>& other)
{
typedef TensorAssignOp<TensorFixedSize, const OtherDerived> Assign;
Assign assign(*this, other.derived());
internal::TensorExecutor<const Assign, DefaultDevice>::run(assign, DefaultDevice());
}
EIGEN_DEVICE_FUNC
EIGEN_STRONG_INLINE TensorFixedSize& operator=(const TensorFixedSize& other)
{

13
unsupported/test/cxx11_tensor_intdiv.cpp
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@ -68,10 +68,23 @@ void test_unsigned_64bit()
}
void test_specific()
{
// A particular combination that exposed a bug in the past.
int64_t div = 209715200;
int64_t num = 3238002688;
Eigen::internal::TensorIntDivisor<int64_t> divider =
Eigen::internal::TensorIntDivisor<int64_t>(div);
int64_t result = num/div;
int64_t result_op = divider.divide(num);
VERIFY_IS_EQUAL(result, result_op);
}
void test_cxx11_tensor_intdiv()
{
CALL_SUBTEST_1(test_signed_32bit());
CALL_SUBTEST_2(test_unsigned_32bit());
CALL_SUBTEST_3(test_signed_64bit());
CALL_SUBTEST_4(test_unsigned_64bit());
CALL_SUBTEST_5(test_specific());
}