a82d08973f
The algorithm uses the data type std::vector<std::array<double, 4>> to represent the large sparse matrices that are XY (X, Y being the ALSC grid size) high but with only 4 non-zero elements on each row. Replace this slightly long type name by SparseArray<double>. No functional changes. Signed-off-by: David Plowman <david.plowman@raspberrypi.com> Reviewed-by: Naushir Patuck <naush@raspberrypi.com> Reviewed-by: Jacopo Mondi <jacopo.mondi@ideasonboard.com> Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>