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• File src/codec/hr_sid_class.c:

  • Patch Set #2, Line 31: static unsigned ones_in_byte(uint8_t byte)

    Without testing, we don't know if this built-in function is actually faster than the look-up table a […]

    The least powerful BTS CPU we need to support is ARM926EJS on sysmoBTS. That CPU does not have any special instructions that can implement `__builtin_popcount()` with native efficiency, hence I prefer the table approach recommended by Vadim - it will probably be more efficient than whatever gcc will generate.

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