petsc-3.14.5 2021-03-03
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# SNESSetTrustRegionTolerance

Sets the trust region parameter tolerance.

### Synopsis

    #include "petscsnes.h"
    PetscErrorCode  SNESSetTrustRegionTolerance(SNES snes,PetscReal tol)

Logically Collective on SNES

### Input Parameters

| snes | - the SNES context
| tol | - tolerance

### Options Database Key

| -snes_trtol <tol> | - Sets tol

### See Also

SNESSetTolerances()

### Level

intermediate

### Location

src/snes/interface/snes.c
Index of all SNES routines
Table of Contents for all manual pages
Index of all manual pages