petsc-3.14.6 2021-03-30
PCShellSetApplySymmetricLeft
Sets routine to use as left preconditioner (when the PC_SYMMETRIC is used).
Synopsis
#include "petscpc.h"
PetscErrorCode PCShellSetApplySymmetricLeft(PC pc,PetscErrorCode (*apply)(PC,Vec,Vec))
Logically Collective on PC
Input Parameters
| pc | - the preconditioner context
|
| apply | - the application-provided left preconditioning routine
|
Calling sequence of apply
PetscErrorCode apply (PC pc,Vec xin,Vec xout)
| pc | - the preconditioner, get the application context with PCShellGetContext()
|
| xin | - input vector
|
| xout | - output vector
|
Notes
the function MUST return an error code of 0 on success and nonzero on failure.
See Also
PCShellSetApply(), PCShellSetApplySymmetricLeft(), PCShellSetSetUp(), PCShellSetApplyTranspose(), PCShellSetContext()
Level
developer
Location
src/ksp/pc/impls/shell/shellpc.c
Implementations
PCShellSetApplySymmetricLeft_Shell(PC pc,PetscErrorCode (*apply) in src/ksp/pc/impls/shell/shellpc.c
Index of all PC routines
Table of Contents for all manual pages
Index of all manual pages