Return information

When SCS terminates it will return an ScsInfo struct containing the following fields.

Name	Type	Description
iter	scs_int	Number of iterations taken
status	char *	Status string (e.g., ‘solved’)
lin_sys_solver	char *	Linear system solver used
status_val	scs_int	Status integer exit flag
scale_updates	scs_int	Number of updates to the scale parameter (see Dynamic scale updating)
pobj	scs_float	Primal objective
dobj	scs_float	Dual objective
res_pri	scs_float	Primal residual (see termination conditions)
res_dual	scs_float	Dual residual (see termination conditions)
gap	scs_float	Absolute duality gap (see termination conditions)
res_infeas	scs_float	Primal infeasibility residual (see termination conditions)
res_unbdd_a	scs_float	Dual infeasibility residual involving \(A\) (see termination conditions)
res_unbdd_p	scs_float	Dual infeasibility residual involving \(P\) (see termination conditions)
comp_slack	scs_float	Complementary slackness (\(s^\top y\)), should be very close to zero
setup_time	scs_float	Time taken for setup (milliseconds)
solve_time	scs_float	Time taken for solve (milliseconds)
scale	scs_float	Final scale parameter, useful for initializing next solve (see Dynamic scale updating)
rejected_accel_steps	scs_int	Number of times an AA update was rejected by the safeguarding check (see Acceleration)
accepted_accel_steps	scs_int	Number of times an AA update was accepted by the safeguarding check (see Acceleration)
lin_sys_time	scs_float	Total time (milliseconds) spent in the linear system solver
cone_time	scs_float	Total time (milliseconds) spent in the cone projection
accel_time	scs_float	Total time (milliseconds) spent in the aceleration routine