petsc-3.7.7 2017-09-25
   
PCFieldSplitSchurGetS
extract the MatSchurComplement object used by this PC in case it needs to be configured separately 
Synopsis
#include "petscpc.h" 
PetscErrorCode  PCFieldSplitSchurGetS(PC pc,Mat *S)
Not collective
Input Parameter
pc       -the preconditioner context
Output Parameter
S        -the Schur complement matrix
Notes
This matrix should not be destroyed using MatDestroy(); rather, use PCFieldSplitSchurRestoreS().
See Also
 PCFieldSplitGetSubKSP(), PCFIELDSPLIT, PCFieldSplitSchurPreType, PCFieldSplitSetSchurPre(), MatSchurComplement, PCFieldSplitSchurRestoreS()
Level:advanced
Location:src/ksp/pc/impls/fieldsplit/fieldsplit.c
Index of all PC routines
Table of Contents for all manual pages
Index of all manual pages