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 pc, Vec xin, Vec xout))

Logically Collective

Input Parameters#

  • pc - the preconditioner context

  • apply - the application-provided left preconditioning routine

Calling sequence of apply#

  • pc - the preconditioner

  • xin - input vector

  • xout - output vector

Note#

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

See Also#

KSP: Linear System Solvers, PCSHELL, PCShellSetApply(), PCShellSetSetUp(), PCShellSetApplyTranspose(), PCShellSetContext()

Level#

advanced

Location#

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

Implementations#

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


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Index of all manual pages