[PATCH 03/12] gdiplus: Introduce absdiff helper.

[Esme Povirk (they/them)]

On Thu, May 28, 2020 at 7:19 PM Chip Davis <cdavis at codeweavers.com> wrote:
> It avoids a corner case where the difference between the two is really large. Partly for this reason, Clang warns when the argument to an abs(3) function is unsigned, even after I tried to get them to stop doing it for differences.

So it's primarily to silence a warning? It's not clear to me when abs
would behave differently.