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 trust region decision.
Synopsis#
#include "petscsnes.h"
PetscErrorCode SNESNewtonTRSetPreCheck(SNES snes, PetscErrorCode (*func)(SNES, Vec, Vec, PetscBool *, void *), void *ctx)
Logically Collective
Input Parameters#
snes - the nonlinear solver object
func - [optional] function evaluation routine, for the calling sequence see
SNESNewtonTRPreCheck()ctx - [optional] user-defined context for private data for the function evaluation routine (may be
NULL)
(since 3.19)
Note#
This function is called BEFORE the function evaluation within the solver.
See Also#
SNES: Nonlinear Solvers, SNESNEWTONTR, SNESNewtonTRPreCheck(), SNESNewtonTRGetPreCheck(), SNESNewtonTRSetPostCheck(), SNESNewtonTRGetPostCheck(),
Level#
deprecated
Location#
Index of all SNES routines
Table of Contents for all manual pages
Index of all manual pages