MatSetValuesBlockedLocal

Inserts or adds values into certain locations of a matrix, using a local ordering of the nodes a block at a time.

#include "petscmat.h" 
int MatSetValuesBlockedLocal(Mat mat,int nrow,int *irow,int ncol,int *icol,PetscScalar *y,InsertMode addv)

Not Collective

	x	- the matrix
	nrow, irow	- number of rows and their local indices
	ncol, icol	- number of columns and their local indices
	y	- a logically two-dimensional array of values
	addv	- either INSERT_VALUES or ADD_VALUES, where ADD_VALUES adds values to any existing entries, and INSERT_VALUES replaces existing entries with new values

Before calling MatSetValuesBlockedLocal(), the user must first set the local-to-global mapping by calling MatSetLocalToGlobalMappingBlock(), where the mapping MUST be set for matrix blocks, not for matrix elements.

Calls to MatSetValuesBlockedLocal() with the INSERT_VALUES and ADD_VALUES options cannot be mixed without intervening calls to the assembly routines.

These values may be cached, so MatAssemblyBegin() and MatAssemblyEnd() MUST be called after all calls to MatSetValuesBlockedLocal() have been completed.