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#
Implementations#
Index of all PC routines
Table of Contents for all manual pages
Index of all manual pages