cudh and pydh high performance kernels for GPUs and CPUs
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code structure
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PYDH

    Python module (pydh.py)

    Cython interface (c_pydh.pyx)

    C++ library (c_pydh_functions.cc)

    (.pyx and .cc are in the same compilation unit)


CUDH

    Python module (cudh.py)

    Cython interface (c_cudh.pyx)

    C++ library (c_cudh_functions.cu)

    (.pyx and .cu are also in the same compilation unit)
