petsc-3.12.5 2020-03-29
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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.

See Also

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

Level

Intermediate

Location

src/ksp/pc/impls/galerkin/galerkin.c

Implementations

PCGalerkinGetKSP_Galerkin in src/ksp/pc/impls/galerkin/galerkin.c

Index of all PC routines
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Index of all manual pages