petsc-3.7.7 2017-09-25

PCMGSetResidual

Sets the function to be used to calculate the residual on the lth level.

#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

MG, set, multigrid, residual, level