petsc-3.12.5 2020-03-29
SNESNewtonTRSetPreCheck
Sets a user function that is called before the search step has been determined. Allows the user a chance to change or override the decision of the line search routine.
Synopsis
#include "petscsnes.h"
PetscErrorCode SNESNewtonTRSetPreCheck(SNES snes, PetscErrorCode (*func)(SNES,Vec,Vec,PetscBool*,void*),void *ctx)
Logically Collective on snes
Input Parameters
| snes | - the nonlinear solver object
|
| func | - [optional] function evaluation routine, see SNESNewtonTRPreCheck() for the calling sequence
|
| ctx | - [optional] user-defined context for private data for the function evaluation routine (may be NULL)
|
Note: This function is called BEFORE the function evaluation within the SNESNEWTONTR solver.
See Also
SNESNewtonTRPreCheck(), SNESNewtonTRGetPreCheck(), SNESNewtonTRSetPostCheck(), SNESNewtonTRGetPostCheck()
Level
intermediate
Location
src/snes/impls/tr/tr.c
Index of all SNES routines
Table of Contents for all manual pages
Index of all manual pages