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Unfortunately `std::bit_and` and the like are host-only functions prior to c++14 (since they are not `constexpr`). They also never exist in the global namespace, so the current implementation always fails to compile via NVCC - since `EIGEN_USING_STD` tries to import the symbol from the global namespace on device. To overcome these limitations, we implement these functionals here.
Eigen is a C++ template library for linear algebra: matrices, vectors, numerical solvers, and related algorithms.
For more information go to http://eigen.tuxfamily.org/.
For pull request, bug reports, and feature requests, go to https://gitlab.com/libeigen/eigen.
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