SNESSetUpdate#
Sets the general-purpose update function called at the beginning of every iteration of the nonlinear solve. Specifically it is called just before the Jacobian is “evaluated”.
Synopsis#
#include "petscsnes.h"
PetscErrorCode SNESSetUpdate(SNES snes, PetscErrorCode (*func)(SNES, PetscInt))
Logically Collective
Input Parameters#
snes - The nonlinear solver context
func - The function
Calling sequence of func#
PetscErrorCode func(SNES snes, PetscInt step);
snes - the nonlinear solver context
step - The current step of the iteration
Note#
This is NOT what one uses to update the ghost points before a function evaluation, that should be done at the beginning of your function provided
to SNESSetFunction(), or SNESSetPicard()
This is not used by most users.
There are a variety of function hooks one many set that are called at different stages of the nonlinear solution process, see the functions listed below.
See Also#
SNES: Nonlinear Solvers, SNES, SNESSolve(), SNESSetJacobian(), SNESSolve(), SNESLineSearchSetPreCheck(), SNESLineSearchSetPostCheck(), SNESNewtonTRSetPreCheck(), SNESNewtonTRSetPostCheck(),
SNESMonitorSet(), SNESSetDivergenceTest()
Level#
advanced
Location#
Index of all SNES routines
Table of Contents for all manual pages
Index of all manual pages