Rotary: Fix accidental quantization #14107
Merged
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Fixes #14095
This fixes the issue where
std::accumulate
would accidentally get instantiated toint
(and thus quantize the entire sum to integers), causing the rotary filter to get insensitive to small changes, as they'd just be zeroed out. I have added a unit test to verify this.I presume the lesson learned is that we should be careful about blindly replacing loops with
std::accumulate
or the like.