SNESGetNPC#
Gets a nonlinear preconditioning solver SNES` to be used to precondition the original nonlinear solver.
Synopsis#
#include "petscsnes.h"
PetscErrorCode SNESGetNPC(SNES snes, SNES *pc)
Not Collective; but any changes to the obtained the npc object must be applied collectively
Input Parameter#
snes - iterative context obtained from
SNESCreate()
Output Parameter#
pc - preconditioner context
Options Database Key#
-npc_snes_type
- set the type of theSNESto use as the nonlinear preconditioner
Notes#
If a SNES was previously set with SNESSetNPC() then that value is returned, otherwise a new SNES object is created.
The (preconditioner) SNES returned automatically inherits the same nonlinear function and Jacobian supplied to the original
SNES
See Also#
SNES: Nonlinear Solvers, SNESSetNPC(), SNESHasNPC(), SNES, SNESCreate()
Level#
developer
Location#
Examples#
Index of all SNES routines
Table of Contents for all manual pages
Index of all manual pages