PCShellSetMatApply

Sets routine to use as preconditioner on a block of vectors.

Synopsis

#include "petscpc.h" 
PetscErrorCode PCShellSetMatApply(PC pc, PetscErrorCode (*matapply)(PC pc, Mat Xin, Mat Xout))

Logically Collective

Input Parameters

• pc - the preconditioner context

• matapply - the application-provided preconditioning routine

Calling sequence of matapply

• pc - the preconditioner

• Xin - input block of vectors represented as a dense Mat

• Xout - output block of vectors represented as a dense Mat

Note

You can get the PCSHELL context set with PCShellSetContext() using PCShellGetContext() if needed by matapply.

See Also

KSP: Linear System Solvers, PCSHELL, PCShellSetApply(), PCShellSetContext(), PCShellGetContext()

Level

advanced

Location

src/ksp/pc/impls/shell/shellpc.c

Examples

src/ksp/ksp/tutorials/ex79.c

Implementations

PCShellSetMatApply_Shell(PC pc, PetscErrorCode (*matapply)() in src/ksp/pc/impls/shell/shellpc.c

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