petsc-3.9.4 2018-09-11
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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 on SNES

Input Parameters

snes -The nonlinear solver context
func -The function

Calling sequence of func

func (SNES snes, PetscInt step); -
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 FormFunction() This is not used by most users.

Keywords

SNES, update

See Also

SNESSetJacobian(), SNESSolve()

Level

advanced

Location

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