PCMGSetResidual#
Sets the function to be used to calculate the residual on the lth level.
Synopsis#
#include "petscksp.h"
PetscErrorCode PCMGSetResidual(PC pc, PetscInt l, PetscErrorCode (*residual)(Mat, Vec, Vec, Vec), Mat mat)
Logically Collective
Input Parameters#
pc - the multigrid context
l - the level (0 is coarsest) to supply
residual - function used to form 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#
Level#
advanced
Location#
Index of all PC routines
Table of Contents for all manual pages
Index of all manual pages