Anna Verner

/ok to test UPD: @cjnolet, seems like CI is triggered only by repository members, could you please do it one more time? I changed formatting with `clang-format`.

> You have changed the distance computation for the large batch size case, but did not change for the small batch case (which is handled in a [separate branch here](https://github.com/rapidsai/cuvs/blob/2c3df758ee62a941f0e859ca29d294db66b12e96/cpp/src/neighbors/refine/refine_host.hpp#L54))....