More accurately normalize 4D vectors, to avoid potential numerical stability issues in Mantaflow. For consistency with changes from #136966. Pull Request: https://projects.blender.org/blender/blender/pulls/137413
More accurately normalize 4D vectors, to avoid potential numerical stability issues in Mantaflow. For consistency with changes from #136966. Pull Request: https://projects.blender.org/blender/blender/pulls/137413