PCGetUseAmat

Gets the flag that indicates that when the preconditioner needs to apply (part of) the operator during the preconditioning process it applies the Amat provided to TSSetRHSJacobian(), TSSetIJacobian(), SNESSetJacobian(), KSPSetOperators() or PCSetOperators() not the Pmat.

Synopsis

#include "petscksp.h" 
PetscErrorCode PCGetUseAmat(PC pc, PetscBool *flg)

Logically Collective

Input Parameter

• pc - the PC preconditioner context

Output Parameter

• flg - PETSC_TRUE to use the Amat, PETSC_FALSE to use the Pmat

See Also

KSP: Linear System Solvers, PC, PCSetUseAmat(), PCBJACOBI, PCMG, PCFIELDSPLIT, PCCOMPOSITE

Level

intermediate

Location

src/ksp/pc/interface/precon.c

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Index of all PC routines
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Index of all manual pages