While I have been experimenting with log blend mode, and seeing what changes does. I noticed that if you change the color dodge formula to log2(src/dst+1), it becomes the same as the original color dodge formula, and if you utilize the illusionbanks, effectbank version of logarithmic dodge, it becomes really dark, and finally, with log2(src/dst), the result can be extremely dark or light making it useless. So, my decision is to remove those blend modes as they are not savalgeable nor I was able to get something similar to effectbank variation of logarithmic blend without going below 0 and over 1.
It doesn't crash! This is a comparison between normal dogde (left) and logarithmi dogd (right). I have no idea if this is correct. Burn is analogous, in that the logarithmic version turns out very black.
I see it going very bright on 16f, but smoother on lightened area and darker on 8i. Easy Dodge/Burn are more consistent in their behavior. I think that they are correct.
EDIT - I might take a look to see if I can improve them though.