PCMGSetResidualTranspose#

Sets the function to be used to calculate the residual of the transposed linear system on the lth level.

Synopsis#

#include "petscksp.h" 
PetscErrorCode PCMGSetResidualTranspose(PC pc, PetscInt l, PetscErrorCode (*residualt)(Mat, Vec, Vec, Vec), Mat mat)

Logically Collective

Input Parameters#

  • pc - the multigrid context

  • l - the level (0 is coarsest) to supply

  • residualt - function used to form transpose of residual, if none is provided the previously provide one is used, if no previous one were provided then a default is used

  • mat - matrix associated with residual

See Also#

PCMG, PCMGResidualTransposeDefault()

Level#

advanced

Location#

src/ksp/pc/impls/mg/mgfunc.c


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