93   PetscObjectParameterSetDefault(tao, gatol, PetscDefined(USE_REAL_SINGLE) ? 1e-5 : 1e-8);  in TaoParametersInitialize()
438   PetscReal catol, crtol, gatol, grtol, gttol;  in TaoSetFromOptions()  local
469   gatol = tao->gatol;  in TaoSetFromOptions()
472 …"-tao_gatol", "Stop if norm of gradient less than", "TaoSetTolerances", tao->gatol, &gatol, NULL));  in TaoSetFromOptions()
475   PetscCall(TaoSetTolerances(tao, gatol, grtol, gttol));  in TaoSetFromOptions()
650 …PetscCall(PetscViewerASCIIPrintf(viewer, "convergence tolerances: gatol=%g,", (double)tao->gatol));  in TaoView()
854 PetscErrorCode TaoSetTolerances(Tao tao, PetscReal gatol, PetscReal grtol, PetscReal gttol)  in TaoSetTolerances()  argument
858   PetscValidLogicalCollectiveReal(tao, gatol, 2);  in TaoSetTolerances()
862   if (gatol == (PetscReal)PETSC_DETERMINE) {  in TaoSetTolerances()
863     tao->gatol = tao->default_gatol;  in TaoSetTolerances()
864   } else if (gatol != (PetscReal)PETSC_CURRENT) {  in TaoSetTolerances()
865 …PetscCheck(gatol >= 0, PetscObjectComm((PetscObject)tao), PETSC_ERR_ARG_OUTOFRANGE, "Negative gato…  in TaoSetTolerances()
866     tao->gatol = gatol;  in TaoSetTolerances()
1261 PetscErrorCode TaoGetTolerances(Tao tao, PetscReal *gatol, PetscReal *grtol, PetscReal *gttol)  in TaoGetTolerances()  argument
1265   if (gatol) *gatol = tao->gatol;  in TaoGetTolerances()
2015   PetscReal          gatol = tao->gatol, grtol = tao->grtol, gttol = tao->gttol;  in TaoDefaultConvergenceTest()  local
2030   } else if (gnorm <= gatol && cnorm <= catol) {  in TaoDefaultConvergenceTest()
2031 …PetscInfo(tao, "Converged due to residual norm ||g(X)||=%g < %g\n", (double)gnorm, (double)gatol));  in TaoDefaultConvergenceTest()