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Michael Forney authored
__builtin_popcount might not be available on all compilers, so using it requires a configure check and fallback implementation. In fact on gcc without an -march flag, it gets compiled to a function call to libgcc. However, we only need to test whether multiple bits are set, and this can be done easily with a bitwise and. Signed-off-by: Michael Forney <mforney@mforney.org>
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