Use std::clamp for clarity at more call sites
Created attachment 404698 [details] Patch
Created attachment 404725 [details] Patch
Created attachment 404854 [details] Patch
Unfortunately I have learned if high is less than low, then std::clamp(x, low, high) returns high.
<rdar://problem/66146541>
Might do this some day, but not going to keep a bug open.