/diy/ - Do It Yourself

Whats up my ohmies.
What's the point of the diodes in the feedback line here?
There's three circuits like this on a board I'm looking at and each takes in the input from a current sensor (4V maximum).
The outputs of all 3 circuits are summed together into a fourth op amp.
I'm trying to figure out what the point of the circuits are because the current sensor outputs are actually measured by ADCs so it must be something besides just measurement