An efficient method of calling C++ functions from numba using clang++/ctypes/rbc

The aim of this document is to explore a method of calling C++ library functions from Numba compiled functions --- Python functions that are decorated with numba.jit(nopython=True).

While there exist ways to wrap C++ codes to Python, calling these wrappers from Numba compiled functions is often not as straightforward and efficient as one would hope.

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