petsc-3.8.4 2018-03-24
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PCGalerkinGetKSP

 Gets the KSP object in the Galerkin PC.

Synopsis

#include "petscksp.h" 
PetscErrorCode  PCGalerkinGetKSP(PC pc,KSP *ksp)
Not Collective

Input Parameter

pc -the preconditioner context

Output Parameters

ksp -the KSP object

Notes: Once you have called this routine you can call KSPSetOperators() on the resulting ksp to provide the operator for the Galerkin problem, an alternative is to use PCGalerkinSetComputeSubmatrix() to provide a routine that computes the submatrix as needed.

Keywords

PC, get, Galerkin preconditioner, sub preconditioner

See Also

PCCreate(), PCSetType(), PCType (for list of available types), PCGALERKIN,
PCGalerkinSetRestriction(), PCGalerkinSetInterpolation(), PCGalerkinSetComputeSubmatrix()

Level:Intermediate
Location:src/ksp/pc/impls/galerkin/galerkin.c
Index of all PC routines
Table of Contents for all manual pages
Index of all manual pages