Here are the data structures with brief descriptions:

scs_a_data_matrix	The sparse matrix A of the conic optimization problem
scs_cone	Cone structure
scs_cone_work	Workspace for cones
scs_conic_probem_metadata	Metadata for conic optimization problems
scs_cs_sparse	Matrix in compressed-column or triplet form
scs_data	Struct containing problem data
scs_direction_cache	Memory for the computation of directions (Broyden and Anderson's methods)
scs_info	Terminating information
scs_scaling	Normalization variables
scs_settings	Settings structure
scs_solution	Primal-dual solution arrays
scs_timer	SCS timer structure
scs_work	Workspace for SCS