| TAOLINESEARCH_FAILED_INFORNAN | - function evaluation gives Inf or Nan value Many br |
| TAOLINESEARCH_FAILED_BADPARAMETER | - negative value set as parameter Many br |
| TAOLINESEARCH_FAILED_ASCENT | - initial line search step * g is not descent direction Many br |
| TAOLINESEARCH_HALTED_MAXFCN | - maximum number of function evaluation reached Many br |
| TAOLINESEARCH_HALTED_UPPERBOUND | - step is at upper bound Many br |
| TAOLINESEARCH_HALTED_LOWERBOUND | - step is at lower bound Many br |
| TAOLINESEARCH_HALTED_RTOL | - range of uncertainty is smaller than given tolerance Many br |
| TAOLINESEARCH_HALTED_USER | - user can set this reason to stop line search Many br |
| TAOLINESEARCH_HALTED_OTHER | - any other reason Many br |