On Wed, Aug 12, 2015 at 11:11 PM, George Spelvin <li...@horizon.com> wrote: > > Agreed. But some x86 code I'm working on now, I have a *lot* of > asm("divl") calls because even do_div isn't great for 64/32->32 division.
Yeah. I'm not convinced that "64/32->32" is all that generic, though. If the dividend in 64-bit, there's no fundamental type-based guarantee that things will fit. So your case is rather special, and depends (intimately) on knowing the actual ranges and how they interact. That's not a generic situation like "do_div()". Linus -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/