petsc-master 2014-12-20
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SNESGetFunction

Returns the vector where the function is stored.

Synopsis

#include "petscsnes.h"  
PetscErrorCode  SNESGetFunction(SNES snes,Vec *r,PetscErrorCode (**f)(SNES,Vec,Vec,void*),void **ctx)
Not Collective, but Vec is parallel if SNES is parallel. Collective if Vec is requested, but has not been created yet.

Input Parameter

snes - the SNES context

Output Parameter

r - the vector that is used to store residuals (or NULL if you don't want it)
f - the function (or NULL if you don't want it); see SNESFunction for calling sequence details
ctx - the function context (or NULL if you don't want it)

Keywords

SNES, nonlinear, get, function

See Also

SNESSetFunction(), SNESGetSolution(), SNESFunction

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

Examples

src/snes/examples/tutorials/ex1.c.html
src/snes/examples/tutorials/ex21.c.html
src/snes/examples/tutorials/ex22.c.html
src/snes/examples/tutorials/ex30.c.html