openslide/openslide — comment on commit 5e3f1f836adca1b42c1fa63361a71619155719a8
File:  line 0
By agoode:

Have you visually compared the output with/without this change? I guess 1/256 of a pixel would be difficult to notice.

Also, I seem to remember seeing other values, but my memory is hazy. Some of the older/original files? I guess you tested all of them.