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Added access to the unerlying raw data of a tnsor slice/chip whenever possible

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This commit is contained in:
Benoit Steiner
2014-10-17 15:33:27 -07:00
parent 7acd38d19e
commit f786897e4b
4 changed files with 126 additions and 5 deletions
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9
unsupported/Eigen/CXX11/src/Tensor/TensorChipping.h
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@@ -157,7 +157,14 @@ struct TensorEvaluator<const TensorChippingOp<DimId, ArgType>, Device>
}*/
EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE Scalar* data() const { return NULL; }
EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE Scalar* data() const {
Scalar* result = m_impl.data();
if (DimId == NumDims && result) {
return result + m_inputOffset;
} else {
return NULL;
}
}
protected:
EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE Index srcCoeff(Index index) const

21
unsupported/Eigen/CXX11/src/Tensor/TensorMorphing.h
View File

@@ -366,7 +366,26 @@ struct TensorEvaluator<const TensorSlicingOp<StartIndices, Sizes, ArgType>, Devi
}
}
EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE Scalar* data() const { return NULL; }
EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE Scalar* data() const {
Scalar* result = m_impl.data();
if (result) {
Index offset = 0;
for (int i = 0; i < NumDims; ++i) {
if (m_dimensions[i] != m_impl.dimensions()[i]) {
offset += m_offsets[i] * m_inputStrides[i];
for (int j = i+1; j < NumDims; ++j) {
if (m_dimensions[j] > 1) {
return NULL;
}
offset += m_offsets[j] * m_inputStrides[j];
}
break;
}
}
return result + offset;
}
return NULL;
}
protected:
EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE Index srcCoeff(Index index) const