PCCompositeSpecialSetAlpha#
Sets alpha for the special composite preconditioner, PC_COMPOSITE_SPECIAL
, for \(\alpha I + R + S\)
Synopsis#
#include "petscksp.h"
PetscErrorCode PCCompositeSpecialSetAlpha(PC pc, PetscScalar alpha)
Logically Collective
Input Parameters#
pc - the preconditioner context
alpha - scale on identity
See Also#
KSP: Linear System Solvers, PCCOMPOSITE
, PC_COMPOSITE_ADDITIVE
, PC_COMPOSITE_MULTIPLICATIVE
, PC_COMPOSITE_SPECIAL
, PCCompositeType
,
PCCompositeSetType()
, PCCompositeGetType()
Level#
developer
Location#
Implementations#
PCCompositeSpecialSetAlpha_Composite() in src/ksp/pc/impls/composite/composite.c
Index of all PC routines
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Index of all manual pages