#include "petsctao.h" PetscErrorCode TaoMonitor(Tao tao, PetscInt its, PetscReal f, PetscReal res, PetscReal cnorm, PetscReal steplength)
| tao | - the Tao context | |
| its | - the current iterate number (>=0) | |
| f | - the current objective function value | |
| res | - the gradient norm, square root of the duality gap, or other measure indicating distince from optimality. This measure will be recorded and used for some termination tests. | |
| cnorm | - the infeasibility of the current solution with regard to the constraints. | |
| steplength | - multiple of the step direction added to the previous iterate. |
| reason | - The termination reason, which can equal TAO_CONTINUE_ITERATING |
| -tao_monitor | - Use the default monitor, which prints statistics to standard output |