STPrecondSetKSPHasMat#
Sets a flag indicating that during STSetUp the coefficient matrix of the KSP linear solver (Amat) must be set to be the same matrix as the preconditioner (Pmat).
Synopsis#
#include "slepcst.h"
PetscErrorCode STPrecondSetKSPHasMat(ST st,PetscBool ksphasmat)
Collective
Input Parameters#
st - the spectral transformation context
ksphasmat - the flag
Notes#
Often, the preconditioner matrix is used only in the PC object, but
in some solvers this matrix must be provided also as the Amat matrix in
the KSP object.
See Also#
ST: Spectral Transformation, STPrecondGetKSPHasMat(), STSetShift()
Level#
developer
Location#
Implementations#
STPrecondSetKSPHasMat_Precond() in src/sys/classes/st/impls/precond/precond.c
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