Re: [PATCH] bitfield.h: add FIELD_MAX() and field_max()

From: Jakub Kicinski
Date: Fri Feb 28 2020 - 14:01:51 EST


On Fri, 28 Feb 2020 12:37:14 -0600 Alex Elder wrote:
> On 2/28/20 12:33 PM, Jakub Kicinski wrote:
> > On Fri, 28 Feb 2020 12:06:09 -0600 Alex Elder wrote:
> >> On 2/28/20 12:04 PM, Alex Elder wrote:
> >>>
> >>>
> >>> I find field_max() to be a good name for what I'm looking for.
> >>
> >> Sorry I wanted to add this but clicked "send" too fast.
> >>
> >> Yes it's the same as field_mask(), but that name only *implies*
> >> it is the same as the maximum value. I mean, they're the same,
> >> but the name I'm suggesting conveys its purpose better.
> >
> > We got FIELD_FIT tho.. The comparison is part of the macro there,
> > and it catches negative values if they manage to sneak in.
>
> Ahhh! I was using the lower-case macros and it looks like there
> isn't one (despite seeming to have all(?) of the others).

Ah, damn, I didn't check for the lower case version.

> How would you feel about having field_fit() be a lower-case
> equivalent of FIELD_FIT()?

That'd be great!