#include "petsctao.h" PetscErrorCode TaoGetConvergedReason(Tao tao, TaoConvergedReason *reason)Not Collective
| tao | - the Tao solver context |
| reason | - one of |
TAO_CONVERGED_GATOL (3) ||g(X)|| < gatol
TAO_CONVERGED_GRTOL (4) ||g(X)|| / f(X) < grtol
TAO_CONVERGED_GTTOL (5) ||g(X)|| / ||g(X0)|| < gttol
TAO_CONVERGED_STEPTOL (6) step size small
TAO_CONVERGED_MINF (7) F < F_min
TAO_CONVERGED_USER (8) User defined
TAO_DIVERGED_MAXITS (-2) its > maxits
TAO_DIVERGED_NAN (-4) Numerical problems
TAO_DIVERGED_MAXFCN (-5) fevals > max_funcsals
TAO_DIVERGED_LS_FAILURE (-6) line search failure
TAO_DIVERGED_TR_REDUCTION (-7) trust region failure
TAO_DIVERGED_USER(-8) (user defined)
TAO_CONTINUE_ITERATING (0)
where
| X | - current solution | |
| X0 | - initial guess | |
| f(X) | - current function value | |
| f(X*) | - true solution (estimated) | |
| g(X) | - current gradient | |
| its | - current iterate number | |
| maxits | - maximum number of iterates | |
| fevals | - number of function evaluations | |
| max_funcsals | - maximum number of function evaluations |