PCFieldSplitGetDiagUseAmat

get the flag indicating whether to extract diagonal blocks from Amat (rather than Pmat) to build the sub-matrices associated with each split. Where KSPSetOperators(ksp,Amat,Pmat) was used to supply the operators.

Synopsis

#include "petscpc.h" 
PetscErrorCode PCFieldSplitGetDiagUseAmat(PC pc, PetscBool *flg)

Logically Collective

Input Parameter

• pc - the preconditioner object

Output Parameter

• flg - boolean flag indicating whether or not to use Amat to extract the diagonal blocks from

See Also

Solving Block Matrices with PCFIELDSPLIT, PC, PCSetOperators(), KSPSetOperators(), PCFieldSplitSetDiagUseAmat(), PCFieldSplitGetOffDiagUseAmat(), PCFIELDSPLIT

Level

intermediate

Location

src/ksp/pc/impls/fieldsplit/fieldsplit.c

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Index of all PC routines
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