SNESSetComputeInitialGuess

Sets a routine used to compute an initial guess for the nonlinear problem

Synopsis

#include "petscsnes.h"  
PetscErrorCode SNESSetComputeInitialGuess(SNES snes, PetscErrorCode (*func)(SNES, Vec, void *), void *ctx)

Logically Collective

Input Parameters

• snes - the SNES context

• func - function evaluation routine

• ctx - [optional] user-defined context for private data for the function evaluation routine (may be NULL)

Calling sequence of func

PetscErrorCode func(SNES snes, Vec x, void *ctx);

• snes - the SNES solver

• x - vector to put initial guess

• ctx - optional user-defined function context

See Also

SNES: Nonlinear Solvers, SNES, SNESSolve(), SNESGetFunction(), SNESComputeFunction(), SNESSetJacobian()

Level

intermediate

Location

src/snes/interface/snes.c

Examples

src/snes/tutorials/ex18.c
src/snes/tutorials/ex48.c
src/snes/tutorials/ex58.c

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