#include "petscksp.h" PetscErrorCode PCMGSetResidual(PC pc,PetscInt l,PetscErrorCode (*residual)(Mat,Vec,Vec,Vec),Mat mat)Logically Collective on PC and Mat
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 |