Output the carry flag to C #2
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Instead of jumping and maybe negating `ret` in assembly, pass the carry flag as an output parameter, and do the negation in C if necessary. This will enable better codegen in places that these get inlined.
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Instead of jumping and maybe negating
retin assembly, pass the carry flag as an output parameter, and do the negation in C if necessary. This will enable better codegen in places that these get inlined.