MGType

Determines the type of multigrid method that is run.

typedef enum { MGMULTIPLICATIVE,MGADDITIVE,MGFULL,MGKASKADE } MGType;

	MGMULTIPLICATIVE (default)	- traditional V or W cycle as determined by MGSetCycles()
	MGADDITIVE	- the additive multigrid preconditioner where all levels are smoothed before updating the residual
	MGFULL	- same as multiplicative except one also performs grid sequencing, that is starts on the coarsest grid, performs a cycle, interpolates to the next, performs a cycle etc
	MGKASKADE	- like full multigrid except one never goes back to a coarser level from a finer