Re: git: 4b500174dd2d - main - arm64: emulate swp/swpb instructions

Kyle Evans <kevans_at_freebsd.org> write on
Date: Mon, 15 May 2023 15:59:04 UTC :

> On Mon, May 15, 2023 at 10:49 AM Jessica Clarke <jrtc27@freebsd.org> wrote:
> >
> > On 15 May 2023, at 16:42, Kyle Evans <kevans@FreeBSD.org> wrote:
> . . .
> > > + return (!match != !invert);
> >
> > This is equivalent to match != invert?
> >
> 
> Good shout, fixed in b68588618b43, thanks. Clear lack of consideration
> on my part, and I'm guessing they were ints in an earlier version of
> NetBSD's implementation.

Off topic but prompted by the "match != invert" :

A hardware engineer would call that != for Boolean
arguments by the name: "xor". That is not my favorite
name for it. I prefer: "Boolean inequality" or the like.

I've seen code in the past that expanded out the case
analysis based on the tests for specific values.

===
Mark Millard
marklmi at yahoo.com