Re: [PATCH v2 2/2] rust: time: Implement basic arithmetic operations for Delta

[Lyude Paul]

On Fri, 2025-08-08 at 11:19 +0200, Andreas Hindborg wrote:
> "Lyude Paul" <lyude@xxxxxxxxxx> writes:
> 
> > While rvkms is only going to be using a few of these, since Deltas are
> > basically the same as i64 it's easy enough to just implement all of the
> > basic arithmetic operations for Delta types.
> > 
> > Keep in mind there's one quirk here - the kernel has no support for
> > i64 % i64 on 32 bit platforms, the closest we have is i64 % i32 through
> > div_s64_rem(). So, instead of implementing ops::Rem or ops::RemAssign we
> > simply provide Delta::rem_nanos().
> > 
> > Signed-off-by: Lyude Paul <lyude@xxxxxxxxxx>
> > 
> 
> I think you missed Alice point regarding units [1]. delta x delta does
> not return delta. Division does not make sense either.

Ah yes you're right - I did miss them, sorry about that! Will fix it in the
next respin

> 
> Best regards,
> Andreas Hindborg
> 
> 
> [1] https://lore.kernel.org/r/aIXVzIwBDvY1ZVjL@xxxxxxxxxx
> 

-- 
Cheers,
 Lyude Paul (she/her)
 Software Engineer at Red Hat

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