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, 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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