PCCompositeSpecialSetAlpha#
Sets alpha for the special composite preconditioner, PC_COMPOSITE_SPECIAL, for alphaI + 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#
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