Exit status
The information structure returned by SPGL1 contains the exit code
info.stat, along with a boolean flag that indicates whether the solve was
successful or nor (info.success) and the error string info.statusStr.
====== ====================== ========= ========================================== Value Status code Success Status string ====== ====================== ========= ========================================== 1 ``EXIT_ROOT_FOUND`` Yes Found a root 2 ``EXIT_BPSOL_FOUND`` Yes Found a BP solution 3 ``EXIT_LEAST_SQUARES`` Yes Found a least-squares solution 4 ``EXIT_OPTIMAL`` Yes Optimal solution found 5 ``EXIT_ITERATIONS`` No Too many iterations 6 ``EXIT_LINE_ERROR`` No Linesearch error 7 ``EXIT_SUBOPTIMAL_BP`` No Found a suboptimal BP solution 8 ``EXIT_MATVEC_LIMIT`` No Maximum matrix-vector operations reached 9 ``EXIT_RUNTIME`` No Maximum runtime reached 10 ``EXIT_PROJECTION`` No Inaccurate projection ====== ====================== ========= ==========================================