# Basic info <!--- Add commit SHA used to reproduce --> - Float reference: f9ca922123 - Fixed point: cf7f073c2 (main) ensure `FIX_BASOP_2361_OTR` is active # Bug description The headrotation trajectory `full-circle-with-up-and-down-4s.csv` is expected to be cancelled out by the static head trajectory `const000.csv` + the reference vector movement `full-circle-with-up-and-down-4s-ccw-Vector3.csv`. However this is not the case and a single digit MAX_ABS_DIFF is observed. Further details in comment below. The root cause is related to precision of the vector math functions. # Ways to reproduce Run the tests as described in the original issue #2361 with the branch/fix mentioned above. ``` make -j python3 -m pytest -n auto -rA tests/renderer_short/test_renderer.py ``` Or run e.g. a failing testcase directly (with STV): ```bash # Reference ./IVAS_rend -q -no_delay_cmp -fs 48 -fr 5 -i scripts/testv/stv714MC48c.wav -if 7_1_4 -of BINAURAL -o ref.wav -T scripts/trajectories/full-circle-with-up-and-down-4s.csv # OTR REF VEC ./IVAS_rend -q -no_delay_cmp -fs 48 -fr 5 -i scripts/testv/stv714MC48c.wav -if 7_1_4 -of BINAURAL -o otr_ref_vec.wav -T scripts/trajectories/const000.csv -rvf scripts/trajectories/full-circle-with-up-and-down-4s-ccw-Vector3.csv -otr ref_vec # diff the files ref.wav and otr_ref_vec.wav ``` <!--- Below are labels that will be added but are not shown in description. This is a template to help fill them. Add further information to the first row and remove and add labels as necessary. -->