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Eigen-unsupported
3.3.4
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A tensor expression mapping an existing array of data.
template <class> class MakePointer_ is added to convert the host pointer to the device pointer. It is added due to the fact that for our device compiler T* is not allowed. If we wanted to use the same Evaluator functions we have to convert that type to our pointer T. This is done through our MakePointer_ class. By default the Type in the MakePointer_<T> is T* . Therefore, by adding the default value, we managed to convert the type and it does not break any existing code as its default value is T*.